freepascal.compiler/packages/ide/wviews.pas

{
    This file is part of the Free Pascal Integrated Development Environment
    Copyright (c) 1998 by Berczi Gabor

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 **********************************************************************}
{$I globdir.inc}

unit WViews;

interface

uses Objects,Drivers,Views,Menus,Dialogs;

const
      evIdle                 = $8000;

      cmCopyWin = 240;
      cmPasteWin = 241;
      cmSelectAll         = 246;
      cmUnselect          = 247;

      cmLocalMenu            = 54100;
      cmUpdate               = 54101;
      cmListFocusChanged     = 54102;

      mfUserBtn1             = $00010000;
      mfUserBtn2             = $00020000;
      mfUserBtn3             = $00040000;
      mfUserBtn4             = $00080000;
      mfCantCancel           = $00100000;

      cmUserBtn1             = $fee0;
      cmUserBtn2             = $fee1;
      cmUserBtn3             = $fee2;
      cmUserBtn4             = $fee3;

      CPlainCluster          = #7#8#9#9;

type
    longstring = ansistring;

    PCenterDialog = ^TCenterDialog;
    TCenterDialog = object(TDialog)
      constructor Init(var Bounds: TRect; ATitle: TTitleStr);
    end;

    PAdvancedMenuBox = ^TAdvancedMenuBox;
    TAdvancedMenuBox = object(TMenuBox)
      function NewSubView(var Bounds: TRect; AMenu: PMenu;
                 AParentMenu: PMenuView): PMenuView; virtual;
      function Execute: Word; virtual;
    end;

    PAdvancedMenuPopUp = ^TAdvancedMenuPopup;
    TAdvancedMenuPopUp = object(TMenuPopup)
      function NewSubView(var Bounds: TRect; AMenu: PMenu;
                 AParentMenu: PMenuView): PMenuView; virtual;
      function Execute: Word; virtual;
    end;

    PAdvancedMenuBar = ^TAdvancedMenuBar;
    TAdvancedMenuBar = object(TMenuBar)
      constructor Init(var Bounds: TRect; AMenu: PMenu);
      function  NewSubView(var Bounds: TRect; AMenu: PMenu;
                  AParentMenu: PMenuView): PMenuView; virtual;
      procedure Update; virtual;
      function  GetMenuItem(cm : word) : PMenuItem;
      procedure HandleEvent(var Event: TEvent); virtual;
      function  Execute: Word; virtual;
    end;

    PAdvancedStaticText = ^TAdvancedStaticText;
    TAdvancedStaticText = object(TStaticText)
      procedure SetText(S: string); virtual;
    end;

    PAdvancedListBox = ^TAdvancedListBox;
    TAdvancedListBox = object(TListBox)
      Default: boolean;
      procedure   FocusItem(Item: sw_integer); virtual;
      procedure   HandleEvent(var Event: TEvent); virtual;
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
    end;

    PNoUpdateButton = ^TNoUpdateButton;
    TNoUpdateButton = object(TButton)
      procedure HandleEvent(var Event: TEvent); virtual;
    end;

    TLocalMenuListBox = object(TAdvancedListBox)
      procedure   HandleEvent(var Event: TEvent); virtual;
      procedure   LocalMenu(P: TPoint); virtual;
      function    GetLocalMenu: PMenu; virtual;
      function    GetCommandTarget: PView; virtual;
    private
      LastLocalCmd: word;
    end;

    PColorStaticText = ^TColorStaticText;
    TColorStaticText = object(TAdvancedStaticText)
      Color: word;
      DontWrap: boolean;
      Delta: TPoint;
      constructor Init(var Bounds: TRect; AText: String; AColor: word; AWrap: boolean);
      function    GetPalette: PPalette; virtual;
      procedure   Draw; virtual;
      constructor Load(var S: TStream);
      procedure   Store(var S: TStream);
    end;

    PHSListBox = ^THSListBox;
    THSListBox = object(TLocalMenuListBox)
      constructor Init(var Bounds: TRect; ANumCols: Word; AHScrollBar, AVScrollBar: PScrollBar);
      function    SaveToFile(const AFileName: string): boolean; virtual;
      function    SaveAs: Boolean; virtual;
    end;

    PDlgWindow = ^TDlgWindow;
    TDlgWindow = object(TDialog)
      constructor Init(var Bounds: TRect; ATitle: TTitleStr; ANumber: Sw_Integer);
      procedure   HandleEvent(var Event: TEvent); virtual;
      procedure Update; virtual;
    end;

    PAdvancedStatusLine = ^TAdvancedStatusLine;
    TAdvancedStatusLine = object(TStatusLine)
      StatusText: PString;
      function    GetStatusText: string; virtual;
      procedure   SetStatusText(const S: string); virtual;
      procedure   ClearStatusText; virtual;
      procedure   Draw; virtual;
    end;

    PDropDownListBox = ^TDropDownListBox;

    PDDHelperLB = ^TDDHelperLB;
    TDDHelperLB = object(TLocalMenuListBox)
      constructor Init(ALink: PDropDownListBox; var Bounds: TRect; ANumCols: Word; AScrollBar: PScrollBar);
      procedure   HandleEvent(var Event: TEvent); virtual;
      procedure   SetState(AState: Word; Enable: Boolean); virtual;
      procedure   SelectItem(Item: Sw_Integer); virtual;
      function    GetText(Item,MaxLen: Sw_Integer): String; virtual;
      function    GetLocalMenu: PMenu; virtual;
      function    GetCommandTarget: PView; virtual;
    private
      Link : PDropDownListBox;
      LastTT: longint;
      InClose: boolean;
    end;

    TDropDownListBox = object(TView)
      Text: string;
      Focused: sw_integer;
      List: PCollection;
      constructor Init(var Bounds: TRect; ADropLineCount: Sw_integer; AList: PCollection);
      procedure   HandleEvent(var Event: TEvent); virtual;
      function    GetText(Item: pointer; MaxLen: sw_integer): string; virtual;
      procedure   NewList(AList: PCollection); virtual;
      procedure   CreateListBox(var R: TRect);
      procedure   DropList(Drop: boolean); virtual;
      function    GetItemCount: sw_integer; virtual;
      procedure   FocusItem(Item: sw_integer); virtual;
      function    LBGetLocalMenu: PMenu; virtual;
      function    LBGetCommandTarget: PView; virtual;
      procedure   SetState(AState: Word; Enable: Boolean); virtual;
      procedure   Draw; virtual;
      function    GetPalette: PPalette; virtual;
      destructor  Done; virtual;
    private
      DropLineCount: Sw_integer;
      ListDropped : boolean;
      ListBox     : PDDHelperLB;
      SB          : PScrollBar;
    end;

    PGroupView = ^TGroupView;
    TGroupView = object(TLabel)
      constructor Init(var Bounds: TRect; AText: String; ALink: PView);
      procedure   Draw; virtual;
    end;

    PPlainCheckBoxes = ^TPlainCheckBoxes;
    TPlainCheckBoxes = object(TCheckBoxes)
      function GetPalette: PPalette; virtual;
    end;

    PPlainRadioButtons = ^TPlainRadioButtons;
    TPlainRadioButtons = object(TRadioButtons)
      function GetPalette: PPalette; virtual;
    end;

    PScrollerRadioButtons = ^TScrollerRadioButtons;
    TScrollerRadioButtons = object (TRadioButtons)
      VScrollBar  : PScrollBar;
      Delta : TPoint;
      constructor Init (Var Bounds: TRect; AStrings: PSItem; aVScrollBar:PScrollBar);
      procedure HandleEvent (Var Event: TEvent); Virtual;
      procedure MovedTo (Item: Sw_Integer); Virtual;
      procedure ScrollDraw; Virtual;
      procedure Draw; Virtual;
      procedure DrawScrollMultiBox (Const Icon, Marker: String);
      procedure ScrollTo (X,Y: Sw_Integer); Virtual;
      procedure CentreSelected;
      private
      function FindSel (P: TPoint): Sw_Integer;
   end;

    PPanel = ^TPanel;
    TPanel = object(TGroup)
      constructor Init(var Bounds: TRect);
    end;

    PAdvMessageBox = ^TAdvMessageBox;
    TAdvMessageBox = object(TDialog)
      CanCancel: boolean;
      procedure HandleEvent(var Event: TEvent); virtual;
    end;

procedure InsertOK(ADialog: PDialog);
procedure InsertButtons(ADialog: PDialog);

procedure Bug(const S: string; Params: pointer);
procedure ErrorBox(const S: string; Params: pointer);
procedure WarningBox(const S: string; Params: pointer);
procedure InformationBox(const S: string; Params: pointer);
function  OKCancelBox(const S: string; Params: pointer): word;
function  ConfirmBox(const S: string; Params: pointer; CanCancel: boolean): word;
function  ChoiceBox(const S: string; Params: pointer; Buttons: array of string; CanCancel: boolean): word;

procedure ShowMessage(Msg: string);
procedure HideMessage;

function  SearchMenuItem(Menu: PMenu; Cmd: word): PMenuItem;
procedure SetMenuItemParam(Menu: PMenuItem; Param: string);
function  IsSubMenu(P: PMenuItem): boolean;
function  IsSeparator(P: PMenuItem): boolean;
function  UpdateMenu(M: PMenu): boolean;
function  SearchSubMenu(M: PMenu; Index: Sw_integer): PMenuItem;
procedure AppendMenuItem(M: PMenu; I: PMenuItem);
procedure RemoveMenuItem(Menu: PMenu; I: PMenuItem);
function  GetMenuItemBefore(Menu:PMenu; BeforeOf: PMenuItem): PMenuItem;

procedure NotImplemented;

function ColorIndex(Color: byte): word;

var  FormatParams     : array[1..20] of ptrint;
     FormatParamCount : integer;
     FormatParamStrs  : array[1..10] of string;
     FormatParamStrCount: integer;

procedure ClearFormatParams;
procedure AddFormatParam(P: pointer);
procedure AddFormatParamInt(L: longint);
procedure AddFormatParamChar(C: AnsiChar);
procedure AddFormatParamStr(const S: string);
function FormatStrF(const Format: string; var Params): string;
function FormatStrStr(const Format, Param: string): string;
function FormatStrStr2(const Format, Param1,Param2: string): string;
function FormatStrStr3(const Format, Param1,Param2,Param3: string): string;
function FormatStrInt(const Format: string; L: PtrInt): string;

const UserButtonName : array[1..4] of string[40] = ('User~1~','User~2~','User~3~','User~4~');

procedure InitAdvMsgBox;
function AdvMessageBox(const Msg: String; Params: Pointer; AOptions: longint): Word;
function AdvMessageBoxRect(var R: TRect; const Msg: String; Params: Pointer; AOptions: longint): Word;
procedure DoneAdvMsgBox;

procedure RegisterWViews;

implementation

uses Mouse,
{     Resource,}
{$ifdef WinClipSupported}
     WinClip,
     FpConst,
{$endif WinClipSupported}
     FVConsts,
     App,MsgBox,StdDlg,
     WConsts,WUtils;

{$ifndef NOOBJREG}
const
  RAdvancedListBox: TStreamRec = (
     ObjType: 1120;
     VmtLink: Ofs(TypeOf(TAdvancedListBox)^);
     Load:    @TAdvancedListBox.Load;
     Store:   @TAdvancedListBox.Store
  );
  RColorStaticText: TStreamRec = (
     ObjType: 1121;
     VmtLink: Ofs(TypeOf(TColorStaticText)^);
     Load:    @TColorStaticText.Load;
     Store:   @TColorStaticText.Store
  );
  RHSListBox: TStreamRec = (
     ObjType: 1122;
     VmtLink: Ofs(TypeOf(THSListBox)^);
     Load:    @THSListBox.Load;
     Store:   @THSListBox.Store
  );
  RDlgWindow: TStreamRec = (
     ObjType: 1123;
     VmtLink: Ofs(TypeOf(TDlgWindow)^);
     Load:    @TDlgWindow.Load;
     Store:   @TDlgWindow.Store
  );
{$endif}

{$ifdef USERESSTRINGS}
    resourcestring
{$else}
    const
{$endif}
      sConfirm='Confirm';
      sError='Error';
      sInformation='Information';
      sWarning='Warning';

const
  MessageDialog  : PCenterDialog = nil;
  UserButtonCmd  : array[Low(UserButtonName)..High(UserButtonName)] of word = (cmUserBtn1,cmUserBtn2,cmUserBtn3,cmUserBtn4);
{$ifdef WinClipSupported}
  FromWinClipCmds    : TCommandSet = ([cmPasteWin]);
{$endif WinClipSupported}

function ColorIndex(Color: byte): word;
begin
  ColorIndex:=(Color and $0f)+(Color and $0f) shl 4;
end;

{*****************************************************************************
                              TCenterDialog
*****************************************************************************}

constructor TCenterDialog.Init(var Bounds: TRect; ATitle: TTitleStr);
begin
  inherited Init(Bounds,ATitle);
  Options:=Options or ofCentered;
end;

function TAdvancedMenuBox.NewSubView(var Bounds: TRect; AMenu: PMenu;
  AParentMenu: PMenuView): PMenuView;
begin
  NewSubView := New(PAdvancedMenuBox, Init(Bounds, AMenu, AParentMenu));
end;

function TAdvancedMenuBox.Execute: word;
type
  MenuAction = (DoNothing, DoSelect, DoReturn);
var
  AutoSelect: Boolean;
  Action: MenuAction;
  Ch: AnsiChar;
  Res: Word;
  ItemShown, P: PMenuItem;
{$ifdef WinClipSupported}
  PPW: PMenuItem;
  WinClipEmpty: boolean;
{$endif WinClipSupported}
  Target: PMenuView;
  R: TRect;
  E: TEvent;
  MouseActive: Boolean;
function IsDisabled(Item: PMenuItem): boolean;
var Found: boolean;
begin
  Found:=Item^.Disabled or IsSeparator(Item);
  if (Found=false) and (IsSubMenu(Item)=false) then
     Found:=CommandEnabled(Item^.Command)=false;
  IsDisabled:=Found;
end;

procedure TrackMouse;
var
  Mouse: TPoint;
  R: TRect;
begin
  MakeLocal(E.Where, Mouse);
  Current := Menu^.Items;
  while Current <> nil do
  begin
    GetItemRect(Current, R);
    if R.Contains(Mouse) then
    begin
      MouseActive := True;
      Break;
    end;
    Current := Current^.Next;
  end;
  if (Current<>nil) and IsDisabled(Current) then
  begin
     Current:=nil;
     MouseActive:=false;
  end;
end;

procedure TrackKey(FindNext: Boolean);

procedure NextItem;
begin
  Current := Current^.Next;
  if Current = nil then Current := Menu^.Items;
end;

procedure PrevItem;
var
  P: PMenuItem;
begin
  P := Current;
  if P = Menu^.Items then P := nil;
  repeat NextItem until Current^.Next = P;
end;

begin
  if Current <> nil then
    repeat
      if FindNext then NextItem else PrevItem;
    until (Current^.Name <> nil) and (IsDisabled(Current)=false);
end;

function MouseInOwner: Boolean;
var
  Mouse: TPoint;
  R: TRect;
begin
  MouseInOwner := False;
  if (ParentMenu <> nil) and (ParentMenu^.Size.Y = 1) then
  begin
    ParentMenu^.MakeLocal(E.Where, Mouse);
    ParentMenu^.GetItemRect(ParentMenu^.Current, R);
    MouseInOwner := R.Contains(Mouse);
  end;
end;

function MouseInMenus: Boolean;
var
  P: PMenuView;
begin
  P := ParentMenu;
  while (P <> nil) and (P^.MouseInView(E.Where)=false) do
        P := P^.ParentMenu;
  MouseInMenus := P <> nil;
end;

function TopMenu: PMenuView;
var
  P: PMenuView;
begin
  P := @Self;
  while P^.ParentMenu <> nil do P := P^.ParentMenu;
  TopMenu := P;
end;

begin
  AutoSelect := False; E.What:=evNothing;
  Res := 0;
  ItemShown := nil;
{$ifdef WinClipSupported}
  PPW:=SearchMenuItem(Menu,cmPasteWin);
  if Assigned(PPW) then
    begin
      WinClipEmpty:=GetTextWinClipboardSize=0;
      SetCmdState(FromWinClipCmds,Not WinClipEmpty);
      PPW^.disabled:=WinClipEmpty;
    end;
{$endif WinClipSupported}
  Current := Menu^.Default;
  MouseActive := False;
  if UpdateMenu(Menu) then
 begin
  if Current<>nil then
    if Current^.Disabled then
       TrackKey(true);
  repeat
    Action := DoNothing;
{$ifdef WinClipSupported}
    If Assigned(PPW) then
      begin
        If WinClipEmpty and (GetTextWinClipboardSize>0) then
          begin
            WinClipEmpty:=false;
            SetCmdState(FromWinClipCmds,true);
            PPW^.disabled:=WinClipEmpty;
            DrawView;
          end
        else if Not WinClipEmpty and (GetTextWinClipboardSize=0) then
          begin
            WinClipEmpty:=true;
            SetCmdState(FromWinClipCmds,false);
            PPW^.disabled:=WinClipEmpty;
            DrawView;
          end;
      end;
{$endif WinClipSupported}
    GetEvent(E);
    case E.What of
      evMouseDown:
        if MouseInView(E.Where) or MouseInOwner then
        begin
          TrackMouse;
          if Size.Y = 1 then AutoSelect := True;
        end else Action := DoReturn;
      evMouseUp:
        begin
          TrackMouse;
          if MouseInOwner then
            Current := Menu^.Default
          else
            if (Current <> nil) and (Current^.Name <> nil) then
              Action := DoSelect
            else
              if MouseActive or MouseInView(E.Where) then Action := DoReturn
              else
              begin
                Current := Menu^.Default;
                if Current = nil then Current := Menu^.Items;
                Action := DoNothing;
              end;
        end;
      evMouseMove:
        if E.Buttons <> 0 then
        begin
          TrackMouse;
          if not (MouseInView(E.Where) or MouseInOwner) and
            MouseInMenus then Action := DoReturn;
        end;
      evKeyDown:
        case CtrlToArrow(E.KeyCode) of
          kbUp, kbDown:
            if Size.Y <> 1 then
              TrackKey(CtrlToArrow(E.KeyCode) = kbDown) else
              if E.KeyCode = kbDown then AutoSelect := True;
          kbLeft, kbRight:
            if ParentMenu = nil then
              TrackKey(CtrlToArrow(E.KeyCode) = kbRight) else
              Action := DoReturn;
          kbHome, kbEnd:
            if Size.Y <> 1 then
            begin
              Current := Menu^.Items;
              if E.KeyCode = kbEnd then TrackKey(False);
            end;
          kbEnter:
            begin
              if Size.Y = 1 then AutoSelect := True;
              Action := DoSelect;
            end;
          kbEsc:
            begin
              Action := DoReturn;
              if (ParentMenu = nil) or (ParentMenu^.Size.Y <> 1) then
                ClearEvent(E);
            end;
        else
          Target := @Self;
          Ch := GetAltChar(E.KeyCode);
          if Ch = #0 then Ch := E.CharCode else Target := TopMenu;
          P := Target^.FindItem(Ch);
          if P = nil then
          begin
            P := TopMenu^.HotKey(E.KeyCode);
            if (P <> nil) and CommandEnabled(P^.Command) then
            begin
              Res := P^.Command;
              Action := DoReturn;
            end
          end else
            if Target = @Self then
            begin
              if Size.Y = 1 then AutoSelect := True;
              Action := DoSelect;
              Current := P;
            end else
              if (ParentMenu <> Target) or (ParentMenu^.Current <> P) then
                Action := DoReturn;
        end;
      evCommand:
        if E.Command = cmMenu then
        begin
          AutoSelect := False;
          if ParentMenu <> nil then Action := DoReturn;
        end else Action := DoReturn;
    end;
    if ItemShown <> Current then
    begin
      ItemShown := Current;
      DrawView;
    end;
    if (Action = DoSelect) or ((Action = DoNothing) and AutoSelect) then
      if Current <> nil then with Current^ do if Name <> nil then
        if Command = 0 then
        begin
          if E.What and (evMouseDown + evMouseMove) <> 0 then PutEvent(E);
          GetItemRect(Current, R);
          R.A.X := R.A.X + Origin.X;
          R.A.Y := R.B.Y + Origin.Y;
          R.B := Owner^.Size;
          if Size.Y = 1 then Dec(R.A.X);
          Target := TopMenu^.NewSubView(R, SubMenu, @Self);
          Res := Owner^.ExecView(Target);
          Dispose(Target, Done);
        end else if Action = DoSelect then Res := Command;
    if (Res <> 0) and CommandEnabled(Res) then
    begin
      Action := DoReturn;
      ClearEvent(E);
    end
    else
      Res := 0;
  until Action = DoReturn;
 end;
  if E.What <> evNothing then
    if (ParentMenu <> nil) or (E.What = evCommand) then PutEvent(E);
  if Current <> nil then
  begin
    Menu^.Default := Current;
    Current := nil;
    DrawView;
  end;
  Execute := Res;
end;

function TAdvancedMenuPopup.NewSubView(var Bounds: TRect; AMenu: PMenu;
  AParentMenu: PMenuView): PMenuView;
begin
  NewSubView := New(PAdvancedMenuBox, Init(Bounds, AMenu, AParentMenu));
end;

function TAdvancedMenuPopup.Execute: word;
type
  MenuAction = (DoNothing, DoSelect, DoReturn);
var
  AutoSelect: Boolean;
  Action: MenuAction;
  Ch: AnsiChar;
  Res: Word;
  ItemShown, P: PMenuItem;
  Target: PMenuView;
  R: TRect;
  E: TEvent;
  MouseActive: Boolean;
function IsDisabled(Item: PMenuItem): boolean;
var Found: boolean;
begin
  Found:=Item^.Disabled or IsSeparator(Item);
  if (Found=false) and (IsSubMenu(Item)=false) then
     Found:=CommandEnabled(Item^.Command)=false;
  IsDisabled:=Found;
end;

procedure TrackMouse;
var
  Mouse: TPoint;
  R: TRect;
begin
  MakeLocal(E.Where, Mouse);
  Current := Menu^.Items;
  while Current <> nil do
  begin
    GetItemRect(Current, R);
    if R.Contains(Mouse) then
    begin
      MouseActive := True;
      Break;
    end;
    Current := Current^.Next;
  end;
  if (Current<>nil) and IsDisabled(Current) then
  begin
     Current:=nil;
     MouseActive:=false;
  end;
end;

procedure TrackKey(FindNext: Boolean);

procedure NextItem;
begin
  Current := Current^.Next;
  if Current = nil then Current := Menu^.Items;
end;

procedure PrevItem;
var
  P: PMenuItem;
begin
  P := Current;
  if P = Menu^.Items then P := nil;
  repeat NextItem until Current^.Next = P;
end;

begin
  if Current <> nil then
    repeat
      if FindNext then NextItem else PrevItem;
    until (Current^.Name <> nil) and (IsDisabled(Current)=false);
end;

function MouseInOwner: Boolean;
var
  Mouse: TPoint;
  R: TRect;
begin
  MouseInOwner := False;
  if (ParentMenu <> nil) and (ParentMenu^.Size.Y = 1) then
  begin
    ParentMenu^.MakeLocal(E.Where, Mouse);
    ParentMenu^.GetItemRect(ParentMenu^.Current, R);
    MouseInOwner := R.Contains(Mouse);
  end;
end;

function MouseInMenus: Boolean;
var
  P: PMenuView;
begin
  P := ParentMenu;
  while (P <> nil) and (P^.MouseInView(E.Where)=false) do
        P := P^.ParentMenu;
  MouseInMenus := P <> nil;
end;

function TopMenu: PMenuView;
var
  P: PMenuView;
begin
  P := @Self;
  while P^.ParentMenu <> nil do P := P^.ParentMenu;
  TopMenu := P;
end;

begin
  AutoSelect := False; E.What:=evNothing;
  Res := 0;
  ItemShown := nil;
  Current := Menu^.Default;
  MouseActive := False;
  if UpdateMenu(Menu) then
 begin
  if Current<>nil then
    if Current^.Disabled then
       TrackKey(true);
  repeat
    Action := DoNothing;
    GetEvent(E);
    case E.What of
      evMouseDown:
        if MouseInView(E.Where) or MouseInOwner then
        begin
          TrackMouse;
          if Size.Y = 1 then AutoSelect := True;
        end else Action := DoReturn;
      evMouseUp:
        begin
          TrackMouse;
          if MouseInOwner then
            Current := Menu^.Default
          else
            if (Current <> nil) and (Current^.Name <> nil) then
              Action := DoSelect
            else
              if MouseActive or MouseInView(E.Where) then Action := DoReturn
              else
              begin
                Current := Menu^.Default;
                if Current = nil then Current := Menu^.Items;
                Action := DoNothing;
              end;
        end;
      evMouseMove:
        if E.Buttons <> 0 then
        begin
          TrackMouse;
          if not (MouseInView(E.Where) or MouseInOwner) and
            MouseInMenus then Action := DoReturn;
        end;
      evKeyDown:
        case CtrlToArrow(E.KeyCode) of
          kbUp, kbDown:
            if Size.Y <> 1 then
              TrackKey(CtrlToArrow(E.KeyCode) = kbDown) else
              if E.KeyCode = kbDown then AutoSelect := True;
          kbLeft, kbRight:
            if ParentMenu = nil then
              TrackKey(CtrlToArrow(E.KeyCode) = kbRight) else
              Action := DoReturn;
          kbHome, kbEnd:
            if Size.Y <> 1 then
            begin
              Current := Menu^.Items;
              if E.KeyCode = kbEnd then TrackKey(False);
            end;
          kbEnter:
            begin
              if Size.Y = 1 then AutoSelect := True;
              Action := DoSelect;
            end;
          kbEsc:
            begin
              Action := DoReturn;
              if (ParentMenu = nil) or (ParentMenu^.Size.Y <> 1) then
                ClearEvent(E);
            end;
        else
          Target := @Self;
          Ch := GetAltChar(E.KeyCode);
          if Ch = #0 then Ch := E.CharCode else Target := TopMenu;
          P := Target^.FindItem(Ch);
          if P = nil then
          begin
            P := TopMenu^.HotKey(E.KeyCode);
            if (P <> nil) and CommandEnabled(P^.Command) then
            begin
              Res := P^.Command;
              Action := DoReturn;
            end
          end else
            if Target = @Self then
            begin
              if Size.Y = 1 then AutoSelect := True;
              Action := DoSelect;
              Current := P;
            end else
              if (ParentMenu <> Target) or (ParentMenu^.Current <> P) then
                Action := DoReturn;
        end;
      evCommand:
        if E.Command = cmMenu then
        begin
          AutoSelect := False;
          if ParentMenu <> nil then Action := DoReturn;
        end else Action := DoReturn;
    end;
    if ItemShown <> Current then
    begin
      ItemShown := Current;
      DrawView;
    end;
    if (Action = DoSelect) or ((Action = DoNothing) and AutoSelect) then
      if Current <> nil then with Current^ do if Name <> nil then
        if Command = 0 then
        begin
          if E.What and (evMouseDown + evMouseMove) <> 0 then PutEvent(E);
          GetItemRect(Current, R);
          R.A.X := R.A.X + Origin.X;
          R.A.Y := R.B.Y + Origin.Y;
          R.B := Owner^.Size;
          if Size.Y = 1 then Dec(R.A.X);
          Target := TopMenu^.NewSubView(R, SubMenu, @Self);
          Res := Owner^.ExecView(Target);
          Dispose(Target, Done);
        end else if Action = DoSelect then Res := Command;
    if (Res <> 0) and CommandEnabled(Res) then
    begin
      Action := DoReturn;
      ClearEvent(E);
    end
    else
      Res := 0;
  until Action = DoReturn;
 end;
  if E.What <> evNothing then
    if (ParentMenu <> nil) or (E.What = evCommand) then PutEvent(E);
  if Current <> nil then
  begin
    Menu^.Default := Current;
    Current := nil;
    DrawView;
  end;
  Execute := Res;
end;

constructor TAdvancedMenuBar.Init(var Bounds: TRect; AMenu: PMenu);
begin
  inherited Init(Bounds, AMenu);
  EventMask:=EventMask or evBroadcast;
  GrowMode:=gfGrowHiX;
end;

function TAdvancedMenuBar.NewSubView(var Bounds: TRect; AMenu: PMenu;
  AParentMenu: PMenuView): PMenuView;
begin
  NewSubView := New(PAdvancedMenuBox, Init(Bounds, AMenu, AParentMenu));
end;

procedure TAdvancedMenuBar.Update;
begin
  UpdateMenu(Menu);
  DrawView;
end;

function  TAdvancedMenuBar.GetMenuItem(cm : word) : PMenuItem;
type
   PItemChain = ^TItemChain;
   TItemChain = record
     Next : PMenuItem;
     Up   : PItemChain;
   end;
var Cur : PMenuItem;
    Up,NUp  : PItemChain;
begin
  Cur:=Menu^.Items;
  Up:=nil;
  if cm=0 then
    begin
      GetMenuItem:=nil;
      exit;
    end;
  while assigned(Cur) and (Cur^.Command<>cm) do
    begin
      if (Cur^.Command=0) and assigned(Cur^.SubMenu) and
         assigned(Cur^.Name) and
         assigned(Cur^.SubMenu^.Items) then
        {subMenu}
        begin
          If assigned(Cur^.Next) then
            begin
              New(Nup);
              Nup^.Up:=Up;
              Nup^.next:=Cur^.Next;
              Up:=Nup;
            end;
          Cur:=Cur^.SubMenu^.Items;
        end
      else
        { normal item }
        begin
          if assigned(Cur^.Next) then
            Cur:=Cur^.Next
          else if assigned(Up) then
            begin
              Cur:=Up^.next;
              NUp:=Up;
              Up:=Up^.Up;
              Dispose(NUp);
            end
          else
            Cur:=Nil;
        end;
    end;
  GetMenuItem:=Cur;
  While assigned(Up) do
    begin
      NUp:=Up;
      Up:=Up^.up;
      Dispose(NUp);
    end;
end;

procedure TAdvancedMenuBar.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmCommandSetChanged : Update;
        cmUpdate            : Update;
      end;
  end;
  inherited HandleEvent(Event);
end;

function TAdvancedMenuBar.Execute: word;
type
  MenuAction = (DoNothing, DoSelect, DoReturn);
var
  AutoSelect: Boolean;
  Action: MenuAction;
  Ch: AnsiChar;
  Res: Word;
  ItemShown, P: PMenuItem;
  Target: PMenuView;
  R: TRect;
  E: TEvent;
  MouseActive: Boolean;
function IsDisabled(Item: PMenuItem): boolean;
var Dis : boolean;
begin
  Dis:=Item^.Disabled or IsSeparator(Item);
  if (Dis=false) and (IsSubMenu(Item)=false) then
     Dis:=CommandEnabled(Item^.Command)=false;
  IsDisabled:=Dis;
end;

procedure TrackMouse;
var
  Mouse: TPoint;
  R: TRect;
begin
  MakeLocal(E.Where, Mouse);
  Current := Menu^.Items;
  while Current <> nil do
  begin
    GetItemRect(Current, R);
    if R.Contains(Mouse) then
    begin
      MouseActive := True;
      Break;
    end;
    Current := Current^.Next;
  end;
  if (Current<>nil) and IsDisabled(Current) then
    Current:=nil;
end;

procedure TrackKey(FindNext: Boolean);

procedure NextItem;
begin
  Current := Current^.Next;
  if Current = nil then Current := Menu^.Items;
end;

procedure PrevItem;
var
  P: PMenuItem;
begin
  P := Current;
  if P = Menu^.Items then P := nil;
  repeat NextItem until Current^.Next = P;
end;

begin
  if Current <> nil then
    repeat
      if FindNext then NextItem else PrevItem;
    until (Current^.Name <> nil) and (IsDisabled(Current)=false);
end;

function MouseInOwner: Boolean;
var
  Mouse: TPoint;
  R: TRect;
begin
  MouseInOwner := False;
  if (ParentMenu <> nil) and (ParentMenu^.Size.Y = 1) then
  begin
    ParentMenu^.MakeLocal(E.Where, Mouse);
    ParentMenu^.GetItemRect(ParentMenu^.Current, R);
    MouseInOwner := R.Contains(Mouse);
  end;
end;

function MouseInMenus: Boolean;
var
  P: PMenuView;
begin
  P := ParentMenu;
  while (P <> nil) and not P^.MouseInView(E.Where) do P := P^.ParentMenu;
  MouseInMenus := P <> nil;
end;

function TopMenu: PMenuView;
var
  P: PMenuView;
begin
  P := @Self;
  while P^.ParentMenu <> nil do P := P^.ParentMenu;
  TopMenu := P;
end;

begin
  AutoSelect := False; E.What:=evNothing;
  Res := 0;
  ItemShown := nil;
  Current := Menu^.Default;
  MouseActive := False;
  if UpdateMenu(Menu) then
 begin
  if Current<>nil then
    if Current^.Disabled then
       TrackKey(true);
  repeat
    Action := DoNothing;
    GetEvent(E);
    case E.What of
      evMouseDown:
        if MouseInView(E.Where) or MouseInOwner then
        begin
          TrackMouse;
          if Size.Y = 1 then AutoSelect := True;
        end else Action := DoReturn;
      evMouseUp:
        begin
          TrackMouse;
          if MouseInOwner then
            Current := Menu^.Default
          else
            if (Current <> nil) and (Current^.Name <> nil) then
              Action := DoSelect
            else
              if MouseActive or MouseInView(E.Where) then Action := DoReturn
              else
              begin
                Current := Menu^.Default;
                if Current = nil then Current := Menu^.Items;
                Action := DoNothing;
              end;
        end;
      evMouseMove:
        if E.Buttons <> 0 then
        begin
          TrackMouse;
          if not (MouseInView(E.Where) or MouseInOwner) and
            MouseInMenus then Action := DoReturn;
        end;
      evKeyDown:
        case CtrlToArrow(E.KeyCode) of
          kbUp, kbDown:
            if Size.Y <> 1 then
              TrackKey(CtrlToArrow(E.KeyCode) = kbDown) else
              if E.KeyCode = kbDown then AutoSelect := True;
          kbLeft, kbRight:
            if ParentMenu = nil then
              TrackKey(CtrlToArrow(E.KeyCode) = kbRight) else
              Action := DoReturn;
          kbHome, kbEnd:
            if Size.Y <> 1 then
            begin
              Current := Menu^.Items;
              if E.KeyCode = kbEnd then TrackKey(False);
            end;
          kbEnter:
            begin
              if Size.Y = 1 then AutoSelect := True;
              Action := DoSelect;
            end;
          kbEsc:
            begin
              Action := DoReturn;
              if (ParentMenu = nil) or (ParentMenu^.Size.Y <> 1) then
                ClearEvent(E);
            end;
        else
          Target := @Self;
          Ch := GetAltChar(E.KeyCode);
          if Ch = #0 then Ch := E.CharCode else Target := TopMenu;
          P := Target^.FindItem(Ch);
          if P = nil then
          begin
            P := TopMenu^.HotKey(E.KeyCode);
            if (P <> nil) and CommandEnabled(P^.Command) then
            begin
              Res := P^.Command;
              Action := DoReturn;
            end
          end else
            if Target = @Self then
            begin
              if Size.Y = 1 then AutoSelect := True;
              Action := DoSelect;
              Current := P;
            end else
              if (ParentMenu <> Target) or (ParentMenu^.Current <> P) then
                Action := DoReturn;
        end;
      evCommand:
        if E.Command = cmMenu then
        begin
          AutoSelect := False;
          if ParentMenu <> nil then Action := DoReturn;
        end else Action := DoReturn;
    end;
    if ItemShown <> Current then
    begin
      ItemShown := Current;
      DrawView;
    end;
    if (Action = DoSelect) or ((Action = DoNothing) and AutoSelect) then
      if Current <> nil then with Current^ do if Name <> nil then
        if Command = 0 then
        begin
          if E.What and (evMouseDown + evMouseMove) <> 0 then PutEvent(E);
          GetItemRect(Current, R);
          R.A.X := R.A.X + Origin.X;
          R.A.Y := R.B.Y + Origin.Y;
          R.B := Owner^.Size;
          if Size.Y = 1 then Dec(R.A.X);
          Target := TopMenu^.NewSubView(R, SubMenu, @Self);
          Res := Owner^.ExecView(Target);
          Dispose(Target, Done);
        end else if Action = DoSelect then Res := Command;
    if (Res <> 0) and CommandEnabled(Res) then
    begin
      Action := DoReturn;
      ClearEvent(E);
    end
    else
      Res := 0;
  until Action = DoReturn;
 end;
  if E.What <> evNothing then
    if (ParentMenu <> nil) or (E.What = evCommand) then PutEvent(E);
  if Current <> nil then
  begin
    Menu^.Default := Current;
    Current := nil;
    DrawView;
  end;
  Execute := Res;
end;

procedure TAdvancedStaticText.SetText(S: string);
begin
  if Text<>nil then DisposeStr(Text);
  Text:=NewStr(S);
  DrawView;
end;

procedure TAdvancedListBox.FocusItem(Item: sw_integer);
var OFocused: sw_integer;
begin
  OFocused:=Focused;
  inherited FocusItem(Item);
  if Focused<>OFocused then
  Message(Owner,evBroadcast,cmListFocusChanged,@Self);
end;

procedure TAdvancedListBox.HandleEvent(var Event: TEvent);
var eEvent : TEvent;
begin
  case Event.What of
    evMouseDown :
      if MouseInView(Event.Where) {and (Event.Double)} then
      begin
        eEvent:=Event; {save for later use after inherited call}
        inherited HandleEvent(Event);
        if (eEvent.Double) and ((eEvent.Buttons and (mbScrollUp or mbScrollDown))=0) then
          if Range>Focused then
            SelectItem(Focused);
      end;
    evBroadcast :
      case Event.Command of
        cmListItemSelected :
          Message(Owner,evBroadcast,cmDefault,nil);
      end;
  end;
  if assigned(VScrollBar) then
    VScrollBar^.HandleEvent(Event);
  if assigned(HScrollBar) then
    HScrollBar^.HandleEvent(Event);
  inherited HandleEvent(Event);
end;

constructor TColorStaticText.Init(var Bounds: TRect; AText: String; AColor: word; AWrap: boolean);
begin
  inherited Init(Bounds,AText);
  DontWrap:=not AWrap;
  Color:=AColor;
end;

function TColorStaticText.GetPalette: PPalette;
begin
  GetPalette:=nil;
end;

procedure TColorStaticText.Draw;

  procedure MoveColorTxt(var b;const curs:string;c:word);
  var
    p : ^word;
    i : sw_integer;
    col : byte;
    tilde : boolean;
  begin
    tilde:=false;
    col:=lo(c);
    p:=@b;
    i:=0;
    while (i<length(Curs)) do
     begin
       Inc(i);
       case CurS[i] of
         #1 :
           begin
             Inc(i);
             Col:=ord(curS[i]);
           end;
         #2 :
           begin
             if tilde then
              col:=hi(Color)
             else
              col:=lo(Color)
           end;
         '~' :
           begin
             tilde:=not tilde;
             if tilde then
              col:=hi(Color)
             else
              col:=lo(Color)
           end;
         else
           begin
             p^:=(col shl 8) or ord(curs[i]);
             inc(p);
           end;
       end;
     end;
  end;

var
  C: word;
  Center: Boolean;
  I, J, L, P, Y: Sw_Integer;
  B: TDrawBuffer;
  S: String;
  T: string;
  CurS: string;
  TildeCount,Po: Sw_integer;
  TempS: string;
begin
  if Size.X=0 then Exit;
  C:=Color;
  if (C and $0f)=((C and $f0) shr 4) then
    C:=GetColor(C and $0f);
  if DontWrap=false then
 begin
  GetText(S);
  L := Length(S);
  P := 1;
  Y := 0;
  Center := False;
  while Y < Size.Y do
  begin
    MoveChar(B, ' ', Lo(C), Size.X);
    if P <= L then
    begin
      if S[P] = #3 then
      begin
        Center := True;
        Inc(P);
      end;
      I := P;
      repeat
        J := P;
        while (P <= L) and (S[P] = ' ') do Inc(P);
        while (P <= L) and (S[P] <> ' ') and (S[P] <> #13) do Inc(P);
      until (P > L) or (P >= I + Size.X) or (S[P] = #13);
      TildeCount:=0; TempS:=copy(S,I,P-I);
      repeat
        Po:=Pos('~',TempS);
        if Po>0 then begin Inc(TildeCount); Delete(TempS,1,Po); end;
      until Po=0;
      if P > I + Size.X + TildeCount then
        if J > I then P := J else P := I + Size.X;
      T:=copy(S,I,P-I);
      if Center then J := (Size.X - {P + I}CStrLen(T)) div 2 else J := 0;
      MoveColorTxt(B[J],T,C);
      while (P <= L) and (S[P] = ' ') do Inc(P);
      if (P <= L) and (S[P] = #13) then
      begin
        Center := False;
        Inc(P);
        if (P <= L) and (S[P] = #10) then Inc(P);
      end;
    end;
    WriteLine(0, Y, Size.X, 1, B);
    Inc(Y);
  end;
 end { Wrap=false } else
 begin
  GetText(S);
  I:=1;
  for Y:=0 to Size.Y-1 do
  begin
    MoveChar(B, ' ', Lo(C), Size.X);
    CurS:='';
    if S<>'' then
    begin
    P:=Pos(#13,S);
    if P=0 then P:=length(S)+1;
    CurS:=copy(S,1,P-1);
    CurS:=copy(CurS,Delta.X+1,High(CurS));
    CurS:=copy(CurS,1,MaxViewWidth);
    Delete(S,1,P);
    end;
    if CurS<>'' then
      MoveColorTxt(B,CurS,C);
    WriteLine(0,Y,Size.X,1,B);
  end;
 end;
end;

constructor TColorStaticText.Load(var S: TStream);
begin
  inherited Load(S);

  S.Read(Color,SizeOf(Color));
  S.Read(DontWrap,SizeOf(DontWrap));
  S.Read(Delta,SizeOf(Delta));
end;

procedure TColorStaticText.Store(var S: TStream);
begin
  inherited Store(S);

  S.Write(Color,SizeOf(Color));
  S.Write(DontWrap,SizeOf(DontWrap));
  S.Write(Delta,SizeOf(Delta));
end;

constructor THSListBox.Init(var Bounds: TRect; ANumCols: Word; AHScrollBar, AVScrollBar: PScrollBar);
begin
  inherited Init(Bounds,ANumCols,AVScrollBar);
  HScrollBar:=AHScrollBar;
  if assigned(VScrollBar) then
    VScrollBar^.SetStep(Bounds.B.Y-Bounds.A.Y-2,1);
  if assigned(HScrollBar) then
    HScrollBar^.SetStep(Bounds.B.X-Bounds.A.X-2,1);
end;

function THSListBox.SaveToFile(const AFileName: string): boolean;
var OK: boolean;
    S: PBufStream;
    i, count : sw_integer;
    st : string;
begin
  New(S, Init(AFileName,stCreate,4096));
  OK:=Assigned(S) and (S^.Status=stOK);
  if OK then
    begin
      if assigned(List) then
        Count:=List^.Count
      else
        Count:=0;
      for i:=0 to Count-1 do
        begin
          st:=GetText(i,High(st));
          S^.Write(St[1],length(St));
          if i<Count then
          S^.Write(EOL[1],length(EOL));
          OK:=(S^.Status=stOK);
          if not OK then
            break;
        end;
    end;
  if Assigned(S) then Dispose(S, Done);
  SaveToFile:=OK;
end;

function THSListBox.SaveAs: Boolean;
var
  DefExt,Title,Filename : string;
  Re : word;
begin
  SaveAs := False;
  Filename:='listbox.txt';
  DefExt:='*.txt';
  Title:='Save list box content';
  Re:=Application^.ExecuteDialog(New(PFileDialog, Init(DefExt,
          Title, label_name, fdOkButton, FileId)), @FileName);
  if Re <> cmCancel then
    SaveAs := SaveToFile(FileName);
end;


constructor TDlgWindow.Init(var Bounds: TRect; ATitle: TTitleStr; ANumber: Sw_Integer);
begin
  inherited Init(Bounds,ATitle);
  Number:=ANumber;
  Flags:=Flags or (wfMove + wfGrow + wfClose + wfZoom);
end;


procedure TDlgWindow.Update;
begin
  DrawView;
end;


procedure TDlgWindow.HandleEvent(var Event: TEvent);
begin
  case Event.What of
    evBroadcast :
      case Event.Command of
        cmUpdate : Update;
      end;
  end;
  inherited HandleEvent(Event);
end;

procedure TLocalMenuListBox.LocalMenu(P: TPoint);
var M: PMenu;
    MV: PAdvancedMenuPopUp;
    R: TRect;
    Re: word;
begin
  M:=GetLocalMenu;
  if M=nil then Exit;
  if LastLocalCmd<>0 then
     M^.Default:=SearchMenuItem(M,LastLocalCmd);
  Desktop^.GetExtent(R);
  MakeGlobal(P,R.A); {Desktop^.MakeLocal(R.A,R.A);}
  New(MV, Init(R, M));
  Re:=Application^.ExecView(MV);
  if M^.Default=nil then LastLocalCmd:=0
     else LastLocalCmd:=M^.Default^.Command;
  Dispose(MV, Done);
  if Re<>0 then
    Message(GetCommandTarget,evCommand,Re,@Self);
end;

function TLocalMenuListBox.GetLocalMenu: PMenu;
begin
  GetLocalMenu:=nil;
{  Abstract;}
end;

function TLocalMenuListBox.GetCommandTarget: PView;
begin
  GetCommandTarget:=@Self;
end;

procedure TLocalMenuListBox.HandleEvent(var Event: TEvent);
var DontClear: boolean;
    P: TPoint;

   PROCEDURE MoveFocus (Req: Sw_Integer);
   BEGIN
     FocusItemNum(Req);                               { Focus req item }
     DrawView;                                      { Redraw focus box }
   END;

begin
  case Event.What of
    evMouseDown :
       if MouseInView(Event.Where) then
      begin
        if  (Event.Buttons=mbRightButton) then
        begin
          MakeLocal(Event.Where,P); Inc(P.X); Inc(P.Y);
          LocalMenu(P);
          ClearEvent(Event);
        end else
        if (Event.Buttons=mbScrollUp) then             { mouse scroll up}
          begin
            if Event.Double then MoveFocus(Focused+6) else MoveFocus(Focused+1);
            ClearEvent(Event);
          end else
        if (Event.Buttons=mbScrollDown) then           { mouse scroll down }
          begin
            if Event.Double then MoveFocus(Focused-6) else MoveFocus(Focused-1);
            ClearEvent(Event);
         end;
      end;
    evKeyDown :
      begin
        DontClear:=false;
        case Event.KeyCode of
          kbAltF10 : Message(@Self,evCommand,cmLocalMenu,@Self);
        else DontClear:=true;
        end;
        if DontClear=false then ClearEvent(Event);
      end;
    evCommand :
      begin
        DontClear:=false;
        case Event.Command of
          cmLocalMenu :
            begin
              P:=Cursor; Inc(P.X); Inc(P.Y);
              LocalMenu(P);
            end;
        else DontClear:=true;
        end;
        if not DontClear then ClearEvent(Event);
      end;
  end;
  inherited HandleEvent(Event);
end;

function TAdvancedStatusLine.GetStatusText: string;
var S: string;
begin
  if StatusText=nil then S:='' else S:=StatusText^;
  GetStatusText:=S;
end;

procedure TAdvancedStatusLine.SetStatusText(const S: string);
begin
  if StatusText<>nil then DisposeStr(StatusText);
  StatusText:=NewStr(S);
  DrawView;
end;

procedure TAdvancedStatusLine.ClearStatusText;
begin
  SetStatusText('');
end;

procedure TAdvancedStatusLine.Draw;
var B: TDrawBuffer;
    C: word;
    S: string;
begin
  S:=GetStatusText;
  if S='' then inherited Draw else
  begin
    C:=GetColor(1);
    MoveChar(B,' ',C,Size.X);
    MoveStr(B[1],S,C);
    WriteLine(0,0,Size.X,Size.Y,B);
  end;
end;

procedure Bug(const S: string; Params: pointer);
begin
  ErrorBox(FormatStrStr(msg_bugcheckfailed,S),Params);
end;

procedure ErrorBox(const S: string; Params: pointer);
begin
  AdvMessageBox(S,Params,mfError+mfInsertInApp+mfOKButton);
end;

procedure WarningBox(const S: string; Params: pointer);
begin
  AdvMessageBox(S,Params,mfWarning+mfInsertInApp+mfOKButton);
end;

procedure InformationBox(const S: string; Params: pointer);
begin
  AdvMessageBox(S,Params,mfInformation+mfInsertInApp+mfOKButton);
end;

function OKCancelBox(const S: string; Params: pointer): word;
begin
  OKCancelBox:=AdvMessageBox(S,Params,mfInformation+mfInsertInApp+mfOKButton+mfCancelButton);
end;

function b2i(B: boolean): longint;
begin
  if b then b2i:=1 else b2i:=0;
end;

function ConfirmBox(const S: string; Params: pointer; CanCancel: boolean): word;
begin
  ConfirmBox:=AdvMessageBox(S,Params,mfConfirmation+mfInsertInApp+mfYesButton+mfNoButton+
     b2i(CanCancel)*mfCancelButton+b2i(not CanCancel)*mfCantCancel);
end;

function ChoiceBox(const S: string; Params: pointer; Buttons: array of string; CanCancel: boolean): word;
var BtnMask,M: longint;
    I,BtnCount: integer;
begin
  BtnCount:=Min(High(Buttons)-Low(Buttons)+1,High(UserButtonName)-Low(UserButtonName)+1);
  BtnMask:=0; M:=mfUserBtn1;
  for I:=Low(Buttons) to Low(Buttons)+BtnCount-1 do
    begin
      UserButtonName[Low(UserButtonName)+I-Low(Buttons)]:=Buttons[I];
      BtnMask:=BtnMask or M; M:=M shl 1;
    end;
  ChoiceBox:=AdvMessageBox(S,Params,mfConfirmation+BtnMask+
    b2i(CanCancel)*mfCancelButton+b2i(not CanCancel)*mfCantCancel);
end;

function IsSeparator(P: PMenuItem): boolean;
begin
  IsSeparator:=(P<>nil) and (P^.Name=nil) and (P^.HelpCtx=hcNoContext);
end;

function IsSubMenu(P: PMenuItem): boolean;
begin
  IsSubMenu:=(P<>nil) and (P^.Name<>nil) and (P^.Command=0) and (P^.SubMenu<>nil);
end;

function SearchMenuItem(Menu: PMenu; Cmd: word): PMenuItem;
var P,I: PMenuItem;
begin
  I:=nil;
  if Menu=nil then P:=nil else P:=Menu^.Items;
  while (P<>nil) and (I=nil) do
  begin
    if IsSubMenu(P) then
       I:=SearchMenuItem(P^.SubMenu,Cmd);
    if I=nil then
    if P^.Command=Cmd then I:=P else
    P:=P^.Next;
  end;
  SearchMenuItem:=I;
end;

procedure SetMenuItemParam(Menu: PMenuItem; Param: string);
begin
  if Menu=nil then Exit;
  if Menu^.Param<>nil then DisposeStr(Menu^.Param);
  Menu^.Param:=NewStr(Param);
end;

function UpdateMenu(M: PMenu): boolean;
var P: PMenuItem;
    IsEnabled: boolean;
begin
  if M=nil then begin UpdateMenu:=false; Exit; end;
  P:=M^.Items; IsEnabled:=false;
  while (P<>nil) do
  begin
    if IsSubMenu(P) then
       begin
         P^.Disabled:=not UpdateMenu(P^.SubMenu);
         if not P^.Disabled then
           IsEnabled:=true;
       end
    else
      begin
        if not IsSeparator(P) and
           Application^.CommandEnabled(P^.Command) then
          begin
            p^.disabled:=false;
            IsEnabled:=true;
          end;
       end;
    P:=P^.Next;
  end;
  UpdateMenu:=IsEnabled;
end;

function SearchSubMenu(M: PMenu; Index: Sw_integer): PMenuItem;
var P,C: PMenuItem;
    Count: Sw_integer;
begin
  P:=nil; Count:=-1;
  if M<>nil then C:=M^.Items else C:=nil;
  while (C<>nil) and (P=nil) do
  begin
    if IsSubMenu(C) then
     begin
       Inc(Count);
       if Count=Index then P:=C;
     end;
    C:=C^.Next;
  end;
  SearchSubMenu:=P;
end;

procedure AppendMenuItem(M: PMenu; I: PMenuItem);
var P: PMenuItem;
begin
  if (M=nil) or (I=nil) then Exit;
  I^.Next:=nil;
  if M^.Items=nil then M^.Items:=I else
  begin
    P:=M^.Items;
    while (P^.Next<>nil) do P:=P^.Next;
    P^.Next:=I;
  end;
end;

procedure DisposeMenuItem(P: PMenuItem);
begin
  if P<>nil then
  begin
    if IsSubMenu(P) then DisposeMenu(P^.SubMenu) else
      if IsSeparator(P)=false then
       if P^.Param<>nil then DisposeStr(P^.Param);
    if P^.Name<>nil then DisposeStr(P^.Name);
    Dispose(P);
  end;
end;

procedure RemoveMenuItem(Menu: PMenu; I: PMenuItem);
var P,PrevP: PMenuItem;
begin
  if (Menu=nil) or (I=nil) then Exit;
  P:=Menu^.Items; PrevP:=nil;
  while (P<>nil) do
  begin
    if P=I then
      begin
        if Menu^.Items<>I then PrevP^.Next:=P^.Next
                          else Menu^.Items:=P^.Next;
        DisposeMenuItem(P);
        Break;
      end;
    PrevP:=P; P:=P^.Next;
  end;
end;

function GetMenuItemBefore(Menu: PMenu; BeforeOf: PMenuItem): PMenuItem;
var P,C: PMenuItem;
begin
  P:=nil;
  if Menu<>nil then C:=Menu^.Items else C:=nil;
  while (C<>nil) do
    begin
      if C^.Next=BeforeOf then begin P:=C; Break; end;
      C:=C^.Next;
    end;
  GetMenuItemBefore:=P;
end;

procedure NotImplemented;
begin
  InformationBox(msg_functionnotimplemented,nil);
end;

procedure InsertButtons(ADialog: PDialog);
var R   : TRect;
    W,H : Sw_integer;
    X   : Sw_integer;
    X1,X2: Sw_integer;
begin
  with ADialog^ do
  begin
    GetExtent(R);
    W:=R.B.X-R.A.X; H:=(R.B.Y-R.A.Y);
    R.Assign(0,0,W,H+3); ChangeBounds(R);
    X:=W div 2; X1:=X div 2+1; X2:=X+X1-1;
    R.Assign(X1-3,H,X1+7,H+2);
    Insert(New(PButton, Init(R, btn_OK, cmOK, bfDefault)));
    R.Assign(X2-7,H,X2+3,H+2);
    Insert(New(PButton, Init(R, btn_Cancel, cmCancel, bfNormal)));
    SelectNext(true);
  end;
end;

procedure InsertOK(ADialog: PDialog);
var BW: Sw_integer;
    R: TRect;
begin
  with ADialog^ do
  begin
    GetBounds(R); R.Grow(0,1); Inc(R.B.Y);
    ChangeBounds(R);
    BW:=10;
    R.A.Y:=R.B.Y-2; R.B.Y:=R.A.Y+2;
    R.A.X:=R.A.X+(R.B.X-R.A.X-BW) div 2; R.B.X:=R.A.X+BW;
    Insert(New(PButton, Init(R, btn_OK, cmOK, bfDefault)));
    SelectNext(true);
  end;
end;

procedure ShowMessage(Msg: string);
var R: TRect;
    Width: Sw_integer;
begin
  Width:=length(Msg)+4*2;
  if Width<(Desktop^.Size.X div 2) then Width:=(Desktop^.Size.X div 2);
  R.Assign(0,0,Width,5);
  New(MessageDialog, Init(R, ''));
  with MessageDialog^ do
  begin
    Flags:=0;
    GetExtent(R); R.Grow(-4,-2);
    if copy(Msg,1,1)<>^C then Msg:=^C+Msg;
    Insert(New(PStaticText, Init(R, Msg)));
  end;
  Application^.Insert(MessageDialog);
end;

procedure HideMessage;
begin
  if MessageDialog<>nil then
    begin
      Application^.Delete(MessageDialog);
      Dispose(MessageDialog, Done);
      MessageDialog:=nil;
    end;
end;


constructor TDDHelperLB.Init(ALink: PDropDownListBox; var Bounds: TRect; ANumCols: Word; AScrollBar: PScrollBar);
begin
  inherited Init(Bounds,ANumCols,AScrollBar);
  EventMask:=EventMask or (evMouseMove+evIdle);
{  Options:=Options or ofPreProcess;}
  Link:=ALink;
end;

procedure TDDHelperLB.SetState(AState: Word; Enable: Boolean);
{var OState: longint;}
begin
{  OState:=State;}
  inherited SetState(AState,Enable);
{  if (((State xor OState) and sfFocused)<>0) and (GetState(sfFocused)=false) then
    Link^.DropList(false);}
end;

function TDDHelperLB.GetText(Item,MaxLen: Sw_Integer): String;
var P: pointer;
    S: string;
begin
  P:=List^.At(Item);
  if Link=nil then S:='' else
    S:=Link^.GetText(P,MaxLen);
  GetText:=S;
end;

function TDDHelperLB.GetLocalMenu: PMenu;
begin
  GetLocalMenu:=Link^.LBGetLocalMenu;
end;

function TDDHelperLB.GetCommandTarget: PView;
begin
  GetCommandTarget:=Link^.LBGetCommandTarget;
end;

procedure TDDHelperLB.HandleEvent(var Event: TEvent);
const
  MouseAutosToSkip = 4;
var
  Mouse : TPoint;
  OldItem, NewItem : Sw_Integer;
  ColWidth : sw_integer;
  Count : Sw_Word;
  GoSelectItem: sw_integer;
  MouseWhere: TPoint;
begin
  GoSelectItem:=-1;
  TView.HandleEvent(Event);
  case Event.What of
    evMouseDown :
      if MouseInView(Event.Where)=false then
        GoSelectItem:=-2
      else
      begin
        ColWidth := Size.X div NumCols + 1;
        OldItem := Focused;
        MakeLocal(Event.Where, Mouse);
        if MouseInView(Event.Where) then
          NewItem := Mouse.Y + (Size.Y * (Mouse.X div ColWidth)) + TopItem
        else
          NewItem := OldItem;
        Count := 0;
        repeat
          if NewItem <> OldItem then
           begin
             FocusItemNum(NewItem);
             DrawView;
           end;
          OldItem := NewItem;
          MakeLocal(Event.Where, Mouse);
          if MouseInView(Event.Where) then
            NewItem := Mouse.Y + (Size.Y * (Mouse.X div ColWidth)) + TopItem
          else
          begin
            if NumCols = 1 then
            begin
              if Event.What = evMouseAuto then Inc(Count);
              if Count = MouseAutosToSkip then
              begin
                Count := 0;
                if Mouse.Y < 0 then NewItem := Focused-1
                else if Mouse.Y >= Size.Y then NewItem := Focused+1;
              end;
            end
            else
            begin
              if Event.What = evMouseAuto then Inc(Count);
              if Count = MouseAutosToSkip then
              begin
                Count := 0;
                if Mouse.X < 0 then NewItem := Focused-Size.Y
                else if Mouse.X >= Size.X then NewItem := Focused+Size.Y
                else if Mouse.Y < 0 then
                  NewItem := Focused - Focused mod Size.Y
                else if Mouse.Y > Size.Y then
                  NewItem := Focused - Focused mod Size.Y + Size.Y - 1;
              end
            end;
          end;
        until not MouseEvent(Event, evMouseMove + evMouseAuto);
        FocusItemNum(NewItem);
        DrawView;
        if Event.Double and (Range > Focused) then SelectItem(Focused);
        ClearEvent(Event);
        GoSelectItem:=Focused;
      end;
    evMouseMove,evMouseAuto:
     if GetState(sfFocused) then
      if MouseInView(Event.Where) then
        begin
          MakeLocal(Event.Where,Mouse);
          FocusItemNum(TopItem+Mouse.Y);
          ClearEvent(Event);
        end;
    evKeyDown :
      begin
        if (Event.KeyCode=kbEsc) then
          begin
            GoSelectItem:=-2;
            ClearEvent(Event);
          end else
        if ((Event.KeyCode=kbEnter) or (Event.CharCode = ' ')) and
           (Focused < Range) then
          begin
            GoSelectItem:=Focused;
            NewItem := Focused;
          end
        else
          case CtrlToArrow(Event.KeyCode) of
            kbUp   : NewItem := Focused - 1;
            kbDown : NewItem := Focused + 1;
            kbRight: if NumCols > 1 then NewItem := Focused + Size.Y else Exit;
            kbLeft : if NumCols > 1 then NewItem := Focused - Size.Y else Exit;
            kbPgDn : NewItem := Focused + Size.Y * NumCols;
            kbPgUp : NewItem := Focused - Size.Y * NumCols;
            kbHome : NewItem := TopItem;
            kbEnd  : NewItem := TopItem + (Size.Y * NumCols) - 1;
            kbCtrlPgDn: NewItem := Range - 1;
            kbCtrlPgUp: NewItem := 0;
        else
          Exit;
        end;
        FocusItemNum(NewItem);
        DrawView;
        ClearEvent(Event);
      end;
    evBroadcast :
      case Event.Command of
        cmReceivedFocus :
          if (Event.InfoPtr<>@Self) and (InClose=false) then
            begin
              GoSelectItem:=-2;
            end;
      else
        if Options and ofSelectable <> 0 then
          if (Event.Command = cmScrollBarClicked) and
             ((Event.InfoPtr = HScrollBar) or (Event.InfoPtr = VScrollBar)) then
            Select
          else
            if (Event.Command = cmScrollBarChanged) then
              begin
                if (VScrollBar = Event.InfoPtr) then
                  begin
                    FocusItemNum(VScrollBar^.Value);
                    DrawView;
                  end
                else
                  if (HScrollBar = Event.InfoPtr) then
                    DrawView;
              end;
      end;
    evIdle :
      begin
        MouseWhere.X:=MouseWhereX shr 3; MouseWhere.Y:=MouseWhereY shr 3;
        if MouseInView(MouseWhere)=false then
         if abs(GetDosTicks-LastTT)>=1 then
          begin
            LastTT:=GetDosTicks;
            MakeLocal(MouseWhere,Mouse);
            if ((Mouse.Y<-1) or (Mouse.Y>=Size.Y)) and
               ((0<=Mouse.X) and (Mouse.X<Size.X)) then
            if Range>0 then
              if Mouse.Y<0 then
                FocusItemNum(Focused-(0-Mouse.Y))
              else
                FocusItemNum(Focused+(Mouse.Y-(Size.Y-1)));
          end;
      end;
  end;
  if (Range>0) and (GoSelectItem<>-1) then
   begin
     InClose:=true;
     if GoSelectItem=-2 then
       Link^.DropList(false)
     else
       SelectItem(GoSelectItem);
   end;
end;

procedure TDDHelperLB.SelectItem(Item: Sw_Integer);
begin
  inherited SelectItem(Item);
  Link^.FocusItem(Focused);
  Link^.DropList(false);
end;

constructor TDropDownListBox.Init(var Bounds: TRect; ADropLineCount: Sw_integer; AList: PCollection);
begin
  inherited Init(Bounds);
  Options:=Options or (ofSelectable);
  EventMask:=EventMask or (evBroadcast);
  DropLineCount:=ADropLineCount;
  NewList(AList);
end;

procedure TDropDownListBox.HandleEvent(var Event: TEvent);
var DontClear: boolean;
    Count: sw_integer;
begin
  case Event.What of
    evKeyDown :
      if GetState(sfFocused) then
       begin
         DontClear:=false;
         Count:=GetItemCount;
         if Count>0 then
         case Event.KeyCode of
           kbUp :
             if Focused>0 then
               FocusItem(Focused-1);
           kbDown :
             if Focused<Count-1 then
               FocusItem(Focused+1);
           kbHome :
             FocusItem(0);
           kbEnd  :
             FocusItem(Count-1);
           kbEnter,
           kbPgDn :
             DropList(true);
         else DontClear:=true;
         end;
         if DontClear=false then ClearEvent(Event);
       end;
    evBroadcast :
      case Event.Command of
        cmReleasedFocus :
          if (ListBox<>nil) and (Event.InfoPtr=ListBox) then
            DropList(false);
        cmListItemSelected :
          if (ListBox<>nil) and (Event.InfoPtr=ListBox) then
            begin
              FocusItem(ListBox^.Focused);
              Text:=GetText(List^.At(Focused),High(Text));
              DrawView;
              DropList(false);
            end;
      end;
    evMouseDown :
      if MouseInView(Event.Where) then
        begin
          DropList(not ListDropped);
          ClearEvent(Event);
        end;
  end;
  inherited HandleEvent(Event);
end;

function TDropDownListBox.GetText(Item: pointer; MaxLen: Sw_integer): string;
var S: string;
begin
  S:=GetStr(Item);
  GetText:=copy(S,1,MaxLen);
end;

procedure TDropDownListBox.NewList(AList: PCollection);
begin
  if List<>nil then Dispose(List, Done); List:=nil;
  List:=AList; FocusItem(0);
end;

procedure TDropDownListBox.CreateListBox(var R: TRect);
var R2: TRect;
begin
  R2.Copy(R); R2.A.X:=R2.B.X-1;
  New(SB, Init(R2));
  Dec(R.B.X);
  New(ListBox, Init(@Self,R,1,SB));
end;

procedure TDropDownListBox.DropList(Drop: boolean);
var R: TRect;
    LB: PListBox;
begin
  if (ListDropped=Drop) then Exit;

  if Drop then
    begin
      R.Assign(Origin.X+1,Origin.Y+Size.Y,Origin.X+Size.X,Origin.Y+Size.Y+DropLineCount);
      if Owner<>nil then Owner^.Lock;
      CreateListBox(R);
      if SB<>nil then
        Owner^.Insert(SB);
      if ListBox<>nil then
        begin
          ListBox^.NewList(List);
          ListBox^.FocusItem(Focused);
          Owner^.Insert(ListBox);
        end;
      if Owner<>nil then Owner^.UnLock;
    end
  else
    begin
      if Owner<>nil then Owner^.Lock;
      if ListBox<>nil then
        begin
{          ListBox^.List:=nil;}
          LB:=ListBox; ListBox:=nil; { this prevents GPFs while deleting }
          Dispose(LB, Done);
        end;
      if SB<>nil then
        begin
          Dispose(SB, Done);
          SB:=nil;
        end;
      Select;
      if Owner<>nil then Owner^.UnLock;
    end;

  ListDropped:=Drop;
  DrawView;
end;

function TDropDownListBox.GetItemCount: sw_integer;
var Count: sw_integer;
begin
  if assigned(List)=false then Count:=0 else
    Count:=List^.Count;
  GetItemCount:=Count;
end;

procedure TDropDownListBox.FocusItem(Item: sw_integer);
var P: pointer;
begin
  Focused:=Item;
  if assigned(ListBox) and (Item>=0) then
    ListBox^.FocusItem(Item);
  if (GetItemCount>0) and (Focused>=0) then
    begin
      P:=List^.At(Focused);
      Text:=GetText(P,Size.X-4);
    end;
  DrawView;
end;

function TDropDownListBox.LBGetLocalMenu: PMenu;
begin
  LBGetLocalMenu:=nil;
end;

function TDropDownListBox.LBGetCommandTarget: PView;
begin
  LBGetCommandTarget:=@Self;
end;

procedure TDropDownListBox.SetState(AState: Word; Enable: Boolean);
begin
  inherited SetState(AState,Enable);
  if (AState and (sfSelected + sfActive + sfFocused)) <> 0 then DrawView;
end;

procedure TDropDownListBox.Draw;
var B: TDrawBuffer;
    C,TextC: word;
    LC: AnsiChar;
begin
  if GetState(sfFocused)=false then
    begin
      C:=GetColor(2);
      TextC:=GetColor(2);
    end
  else
    begin
      C:=GetColor(3);
      TextC:=GetColor(3);
    end;
  MoveChar(B,' ',C,Size.X);
  MoveStr(B[1],copy(Text,1,Size.X-2),TextC);
  if ListDropped then LC:='^' else LC:='v';
  MoveChar(B[Size.X-2],LC,C,1);
  WriteLine(0,0,Size.X,Size.Y,B);
end;

function TDropDownListBox.GetPalette: PPalette;
const P: string[length(CListViewer)] = CListViewer;
begin
  GetPalette:=@P;
end;

destructor TDropDownListBox.Done;
begin
  if ListDropped then DropList(false);
  inherited Done;
end;

constructor TGroupView.Init(var Bounds: TRect; AText: String; ALink: PView);
begin
  inherited Init(Bounds,AText,ALink);
end;

procedure TGroupView.Draw;
var B: TDrawBuffer;
    FrameC,LabelC: word;
begin
  FrameC:=GetColor(1);
  if Light then
    LabelC:=GetColor(2)+GetColor(4) shl 8
  else
    LabelC:=GetColor(1)+GetColor(3) shl 8;
  { First Line }
  MoveChar(B[0],''#$DA'',FrameC,1);
  MoveChar(B[1],''#$C4'',FrameC,Size.X-2);
  MoveChar(B[Size.X-1],''#$BF'',FrameC,1);
  if Text<>nil then
    begin
      MoveCStr(B[1],' '+Text^+' ',LabelC);
    end;
  WriteLine(0,0,Size.X,1,B);
  { Mid Lines }
  MoveChar(B[0],''#$B3'',FrameC,1);
  MoveChar(B[1],' ',FrameC,Size.X-2);
  MoveChar(B[Size.X-1],''#$B3'',FrameC,1);
  WriteLine(0,1,Size.X,Size.Y-2,B);
  { Last Line }
  MoveChar(B[0],''#$C0'',FrameC,1);
  MoveChar(B[1],''#$C4'',FrameC,Size.X-2);
  MoveChar(B[Size.X-1],''#$D9'',FrameC,1);
  WriteLine(0,Size.Y-1,Size.X,1,B);
end;

function TPlainCheckBoxes.GetPalette: PPalette;
const P: string[length(CPlainCluster)] = CPlainCluster;
begin
  GetPalette:=@P;
end;

function TPlainRadioButtons.GetPalette: PPalette;
const P: string[length(CPlainCluster)] = CPlainCluster;
begin
  GetPalette:=@P;
end;

constructor TScrollerRadioButtons.Init (Var Bounds: TRect; AStrings: PSItem; aVScrollBar:PScrollBar);
var Y : sw_word;
begin
  inherited init (Bounds, AStrings);
  VScrollBar:=aVScrollBar;
  EventMask := evMouseDown + evKeyDown + evCommand + evBroadcast;
  Y:=Strings.count;
  if (VScrollBar<> nil) and (Y>=size.Y) and (Size.Y>0) then
    VScrollBar^.SetParams(0, 0,Y-Size.Y, Size.Y-1, VScrollBar^.ArStep);       { Set vert scrollbar }
end;

procedure TScrollerRadioButtons.HandleEvent (Var Event: TEvent);
VAR I: Sw_Integer; Mouse: TPoint;
   LinesScroll : sw_integer;
begin
   If ((Options AND ofSelectable) <> 0) Then
   begin
     If (Event.What = evMouseDown) Then Begin             { MOUSE EVENT }
      if (Event.Buttons=mbScrollUp) then                  { mouse scroll up}
         begin
           LinesScroll:=1;
           if Event.Double then LinesScroll:=LinesScroll+4;
           ScrollTo(Delta.X, Delta.Y + LinesScroll);
           ClearEvent(Event);                             { Event was handled }
         end else
       if (Event.Buttons=mbScrollDown) then               { mouse scroll down }
         begin
           LinesScroll:=-1;
           if Event.Double then LinesScroll:=LinesScroll-4;
           ScrollTo(Delta.X, Delta.Y + LinesScroll);
           ClearEvent(Event);                             { Event was handled }
         end else
       if (VScrollBar<>nil) then begin       { mouse click if we have scrollbar}
         MakeLocal(Event.Where, Mouse);                   { Make point local }
         I := FindSel(Mouse);                             { Find selected item }
         If (I <> -1) Then                                { Check in view }
           If ButtonState(I) Then Sel := I;               { If enabled select }
         DrawView;                                        { Now draw changes }
         Repeat
           MakeLocal(Event.Where, Mouse);                 { Make point local }
         Until NOT MouseEvent(Event, evMouseMove);        { Wait for mouse up }
         MakeLocal(Event.Where, Mouse);                   { Make point local }
         If (FindSel(Mouse) = Sel) AND ButtonState(Sel)   { If valid/selected }
         Then Begin
           Press(Sel);                                    { Call pressed }
           DrawView;                                      { Now draw changes }
         End;
         ClearEvent(Event);                               { Event was handled }
       end;
     end;
   end;

   Inherited HandleEvent(Event);                      { Call ancestor }

   If (Event.What = evBroadcast) AND
     (Event.Command = cmScrollBarChanged) AND         { Scroll bar change }
     ({(Event.InfoPtr = HScrollBar) OR}               { Our scrollbar? }
      (Event.InfoPtr = VScrollBar)) Then
   begin
     ScrollDraw;
     ClearEvent(Event);
  end;
end;

procedure TScrollerRadioButtons.ScrollTo (X,Y: Sw_Integer);
begin
  if X>Size.X then X:=Size.X-1;
  if X<0 then X:=0;
  if (Y>(Strings.Count-Size.Y)) then Y:=(Strings.Count-Size.Y);
  if Y<0 then Y:=0;
  if Delta.Y<>Y then
  begin
    Delta.Y:=Y;
    if (VScrollBar<>nil) then if VScrollBar^.Value<>Delta.Y then VScrollBar^.SetValue(Delta.Y);
    DrawView;
  end;
end;

function TScrollerRadioButtons.FindSel (P: TPoint): Sw_Integer;
var I, S, Vh: Sw_Integer; R: TRect;
begin
   GetExtent(R);                                      { Get view extents }
   If R.Contains(P) Then Begin                        { Point in view }
     Vh := Size.Y;                            { View height }
     I := 0;                                          { Preset zero value }
     {While (P.X >= Column(I+Vh)) Do Inc(I, Vh);}       { Inc view size }
     S := I + P.Y+ Delta.Y;                                { Line to select }
     If ((S >= 0) AND (S < Strings.Count))            { Valid selection }
       Then FindSel := S Else FindSel := -1;          { Return selected item }
   End Else FindSel := -1;                            { Point outside view }
end;

procedure TScrollerRadioButtons.MovedTo (Item: Sw_Integer);
begin
  if (Item<Delta.Y) then begin Delta.Y:=Item; end;
  if (Item>=(Size.Y+Delta.Y)) then begin Delta.Y:=Item-Size.Y+1; end;
  if (VScrollBar<>nil) then if VScrollBar^.Value<>Delta.Y then VScrollBar^.SetValue(Delta.Y);
  inherited MovedTo(Item);
end;

procedure TScrollerRadioButtons.ScrollDraw;
begin
  if (VScrollBar<> nil) then Delta.Y:=VScrollBar^.Value;
  Drawview;
end;

procedure TScrollerRadioButtons.CentreSelected;
var Y : Sw_Integer;
begin
  if (VScrollBar<> nil) then
  begin
    Y:=Sel-(Size.Y div 2);
    if Y<0 then Y:=0;
    if (Size.Y+Y) >= Strings.Count then Y:=Strings.Count-Size.Y;
    if Y<0 then Y:=0;
    if Delta.Y<>Y then
    begin
      Delta.Y:=Y;
      VScrollBar^.SetValue(Y);
      DrawView;
    end;
  end;
end;

procedure TScrollerRadioButtons.Draw;
begin
  if VScrollBar=nil then begin inherited draw; exit; end;
  if Size.Y >= Strings.Count then begin inherited draw; exit; end;
  DrawScrollMultiBox(' ( ) ',' *');
end;

procedure TScrollerRadioButtons.DrawScrollMultiBox (Const Icon, Marker: String);
VAR I, J, Cur, Col: Sw_Integer;
    CNorm, CSel, CDis, Color: Word; B: TDrawBuffer;
begin
   CNorm := GetColor($0301);                          { Normal colour }
   CSel := GetColor($0402);                           { Selected colour }
   CDis := GetColor($0505);                           { Disabled colour }
   For I := 0 To Size.Y-1 Do Begin                { For each line }
     MoveChar(B, ' ', Byte(CNorm), Size.X);       { Fill buffer }
     {For J := 0 To (Strings.Count - 1) DIV Size.Y + 1
     Do}
     J:=0;
     Begin
       Cur := {J*Size.Y} Delta.Y + I;                { Current line }
       If (Cur < Strings.Count) Then Begin
         Col := {Column(Cur)}1;                          { Calc column }
         If (Col + CStrLen(PString(Strings.At(Cur))^)+
         5 < Sizeof(TDrawBuffer) DIV SizeOf(Word))
         AND (Col < Size.X) Then Begin            { Text fits in column }
           If NOT ButtonState(Cur) Then
             Color := CDis Else If (Cur = Sel) AND    { Disabled colour }
             (State and sfFocused <> 0) Then
               Color := CSel Else                     { Selected colour }
               Color := CNorm;                        { Normal colour }
           MoveChar(B[Col], ' ', Byte(Color),
             Size.X-Col);                         { Set this colour }
           MoveStr(B[Col], Icon, Byte(Color));        { Transfer icon string }
           WordRec(B[Col+2]).Lo := Byte(Marker[
             MultiMark(Cur) + 1]);                    { Transfer marker }
           MoveCStr(B[Col+5], PString(Strings.At(
             Cur))^, Color);                          { Transfer item string }
           If ShowMarkers AND (State AND sfFocused <> 0)
           AND (Cur = Sel) Then Begin                 { Current is selected }
             WordRec(B[Col]).Lo := Byte(SpecialChars[0]);
              WordRec(B[{Column(Cur+Size.Y)}1-1]).Lo
                := Byte(SpecialChars[1]);             { Set special character }
           End;
         End;
       End;
     End;
     WriteBuf(0, I, Size.X, 1, B);              { Write buffer }
   End;
  SetCursor({Column(Sel)}1+2,{Row(Sel)}Sel-Delta.Y);
end;

constructor TAdvancedListBox.Load(var S: TStream);
begin
  inherited Load(S);

  S.Read(Default,SizeOf(Default));
end;

procedure TAdvancedListBox.Store(var S: TStream);
begin
  inherited Store(S);

  S.Write(Default,SizeOf(Default));
end;

procedure TNoUpdateButton.HandleEvent(var Event: TEvent);
begin
  if (Event.What<>evBroadcast) or (Event.Command<>cmCommandSetChanged) then
  inherited HandleEvent(Event);
end;

constructor TPanel.Init(var Bounds: TRect);
begin
  inherited Init(Bounds);
  Options:=Options or (ofSelectable+ofTopSelect);
  GrowMode:=gfGrowHiX+gfGrowHiY;
end;

procedure TAdvMessageBox.HandleEvent(var Event: TEvent);
var I: integer;
begin
  if (not CanCancel) and (Event.What=evCommand) and (Event.Command=cmCancel) then
    ClearEvent(Event);
  inherited HandleEvent(Event);
  case Event.What of
    evCommand:
      begin
        for I:=Low(UserButtonCmd) to High(UserButtonCmd) do
         if Event.Command=UserButtonCmd[I] then
          if State and sfModal <> 0 then
          begin
            EndModal(Event.Command);
            ClearEvent(Event);
          end;
      end;
  end;
end;

procedure ClearFormatParams;
begin
  FormatParamCount:=0; FillChar(FormatParams,sizeof(FormatParams),0);
  FormatParamStrCount:=0;
end;

procedure AddFormatParam(P: pointer);
begin
  Inc(FormatParamCount);
  FormatParams[FormatParamCount]:=ptrint(P);
end;

procedure AddFormatParamInt(L: longint);
begin
  Inc(FormatParamCount);
  FormatParams[FormatParamCount]:=L;
end;

procedure AddFormatParamChar(C: AnsiChar);
begin
  AddFormatParamInt(ord(C));
end;

procedure AddFormatParamStr(const S: string);
begin
  Inc(FormatParamStrCount);
  FormatParamStrs[FormatParamStrCount]:=S;
  AddFormatParam(@FormatParamStrs[FormatParamStrCount]);
end;

function FormatStrF(const Format: string; var Params): string;
var S: string;
begin
  S:='';
  FormatStr(S,Format,Params);
  FormatStrF:=S;
end;

function FormatStrStr(const Format, Param: string): string;
var S: string;
    P: pointer;
begin
  P:=@Param;
  FormatStr(S,Format,P);
  FormatStrStr:=S;
end;

function FormatStrStr2(const Format, Param1,Param2: string): string;
var S: string;
    P: array[1..2] of pointer;
begin
  P[1]:=@Param1; P[2]:=@Param2;
  FormatStr(S,Format,P);
  FormatStrStr2:=S;
end;

function FormatStrStr3(const Format, Param1,Param2,Param3: string): string;
var S: string;
    P: array[1..3] of pointer;
begin
  P[1]:=@Param1;
  P[2]:=@Param2;
  P[3]:=@Param3;
  FormatStr(S,Format,P);
  FormatStrStr3:=S;
end;

function FormatStrInt(const Format: string; L: PtrInt): string;
var S: string;
begin
  FormatStr(S,Format,L);
  FormatStrInt:=S;
end;

const
  Cmds: array[0..3] of word =
    (cmYes, cmNo, cmOK, cmCancel);
var

  ButtonName: array[0..3] of string;
  Titles: array[0..3] of string;

function AdvMessageBox(const Msg: String; Params: Pointer; AOptions: longint): Word;
var
  R: TRect;
begin
  R.Assign(0, 0, 0, 0);
  AdvMessageBox := AdvMessageBoxRect(R, Msg, Params, AOptions);
end;

procedure GetStaticTextDimensions(const S: string; ViewWidth: integer; var MaxCols, Rows: integer);
var
  Center: Boolean;
  I, J, L, P, Y: Sw_Integer;
  CurLine: string;
begin
  MaxCols:=0;
  L := Length(S);
  P := 1;
  Y := 0;
  Center := False;
  while (Y < 32767) and (P<=length(S)) do
  begin
    CurLine:='';
    if P <= L then
    begin
      if S[P] = #3 then
      begin
        Center := True;
        Inc(P);
      end;
      I := P;
      repeat
        J := P;
        while (P <= L) and (S[P] = ' ') do Inc(P);
        while (P <= L) and (S[P] <> ' ') and (S[P] <> #13) do Inc(P);
      until (P > L) or (P >= I + ViewWidth) or (S[P] = #13);
      if P > I + ViewWidth then
        if J > I then P := J else P := I + ViewWidth;
      if Center then J := (ViewWidth - P + I) div 2 else J := 0;
      CurLine:=CurLine+copy(S,I,P-I);
{      MoveBuf(B[J], S[I], Color, P - I);}
      while (P <= L) and (S[P] = ' ') do Inc(P);
      if (P <= L) and (S[P] = #13) then
      begin
        Center := False;
        Inc(P);
        if (P <= L) and (S[P] = #10) then Inc(P);
      end;
    end;
    if length(CurLine)>MaxCols then
      MaxCols:=length(CurLine);
{    WriteLine(0, Y, Size.X, 1, B);}
    Inc(Y);
  end;
  Rows:=Y;
end;

function AdvMessageBoxRect(var R: TRect; const Msg: String; Params: Pointer; AOptions: longint): Word;
var
  I, X, ButtonCount: Sw_Integer;
  Dialog: PAdvMessageBox;
  Control: PView;
  ButtonList: array[0..4] of PView;
  S,BtnName: String;
  Cols,Rows: integer;
begin
  FormatStr(S, Msg, Params^);
  if R.Empty then
  begin
    GetStaticTextDimensions(S,40,Cols,Rows);
    if Cols<32 then Cols:=32; if Rows=0 then Rows:=1;
    R.Assign(0,0,3+Cols+3,Rows+6);
    if (AOptions and mfInsertInApp)= 0 then
      R.Move((Desktop^.Size.X-(R.B.X-R.A.X)) div 2,(Desktop^.Size.Y-(R.B.Y-R.A.Y)) div 2)
    else
      R.Move((Application^.Size.X-(R.B.X-R.A.X)) div 2,(Application^.Size.Y-(R.B.Y-R.A.Y)) div 2);
  end;
  New(Dialog,Init(R, Titles[AOptions and $3]));
  with Dialog^ do
   begin
     CanCancel:=(Options and mfCantCancel)=0;
     R.Assign(3,2, Size.X-2,Size.Y-3);
     Control := New(PStaticText, Init(R, S));
     Insert(Control);
     X := -2;
     ButtonCount := 0;
     for I := 0 to 3 do
      if AOptions and ($10000 shl I) <> 0 then
       begin
         BtnName:=UserButtonName[I+1];
         R.Assign(0, 0, Max(10,length(BtnName)+2), 2);
         Control := New(PButton, Init(R, BtnName, UserButtonCmd[I+1], bfNormal));
         Inc(X, Control^.Size.X + 2);
         ButtonList[ButtonCount] := Control;
         Inc(ButtonCount);
       end;
     for I := 0 to 3 do
      if AOptions and ($0100 shl I) <> 0 then
       begin
         R.Assign(0, 0, 10, 2);
         Control := New(PButton, Init(R, ButtonName[I], Cmds[i], bfNormal));
         Inc(X, Control^.Size.X + 2);
         ButtonList[ButtonCount] := Control;
         Inc(ButtonCount);
       end;
     X := (Size.X - X) div 2;
     for I := 0 to ButtonCount - 1 do
      begin
        Control := ButtonList[I];
        Insert(Control);
        Control^.MoveTo(X, Size.Y - 3);
        Inc(X, Control^.Size.X + 2);
      end;
     SelectNext(False);
   end;
  if AOptions and mfInsertInApp = 0 then
    AdvMessageBoxRect := DeskTop^.ExecView(Dialog)
  else
    AdvMessageBoxRect := Application^.ExecView(Dialog);
  Dispose(Dialog, Done);
end;

procedure InitAdvMsgBox;
begin
  ButtonName[0] := slYes;
  ButtonName[1] := slNo;
  ButtonName[2] := slOk;
  ButtonName[3] := slCancel;
  Titles[0] := sWarning;
  Titles[1] := sError;
  Titles[2] := sInformation;
  Titles[3] := sConfirm;
end;

procedure DoneAdvMsgBox;
begin
end;


procedure RegisterWViews;
begin
{$ifndef NOOBJREG}
  RegisterType(RAdvancedListBox);
  RegisterType(RColorStaticText);
  RegisterType(RHSListBox);
  RegisterType(RDlgWindow);
{$endif}
end;


END.