freepascal.compiler/packages/extra/ptc/win32/base/event.inc

{
    Free Pascal port of the OpenPTC C++ library.
    Copyright (C) 2001-2003  Nikolay Nikolov ([email protected])
    Original C++ version by Glenn Fiedler ([email protected])

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
}

Constructor TWin32Event.Create;

Begin
  { create event handle }
  m_event := CreateEvent(Nil, True, False, Nil);

  { check event handle }
  If m_event = 0 Then
    Raise TPTCError.Create('could not create event');
End;

Destructor TWin32Event.Destroy;

Begin
  { close handle }
  CloseHandle(m_event);

  Inherited Destroy;
End;

Procedure TWin32Event._set;

Begin
  { set event }
  SetEvent(m_event);
End;

Procedure TWin32Event.reset;

Begin
  { reset event }
  ResetEvent(m_event);
End;

Procedure TWin32Event.wait;

Begin
  { wait for event }
  WaitForSingleObject(m_event, INFINITE);
End;