Button.Clicked as a C# event

Example/demo.cs

@@ -225,10 +225,11 @@ static class Demo {
 
 	static void NewFile ()
 	{
-		var d = new Dialog (
-			"New File", 50, 20,
-			new Button ("Ok", is_default: true) { Clicked = () => { Application.RequestStop (); } },
-			new Button ("Cancel") { Clicked = () => { Application.RequestStop (); } });
+		var ok = new Button ("Ok", is_default: true);
+		ok.Clicked += () => { Application.RequestStop (); };
+		var cancel = new Button ("Cancel");
+		cancel.Clicked += () => { Application.RequestStop (); };
+		var d = new Dialog ("New File", 50, 20, ok, cancel);
 		ml2 = new Label (1, 1, "Mouse Debug Line");
 		d.Add (ml2);
 		Application.Run (d);
@@ -423,9 +424,11 @@ static class Demo {
 
 	static void ListSelectionDemo (bool multiple)
 	{
-		var d = new Dialog ("Selection Demo", 60, 20,
-			new Button ("Ok", is_default: true) { Clicked = () => { Application.RequestStop (); } },
-			new Button ("Cancel") { Clicked = () => { Application.RequestStop (); } });
+		var ok = new Button ("Ok", is_default: true);
+		ok.Clicked += () => { Application.RequestStop (); };
+		var cancel = new Button ("Cancel");
+		cancel.Clicked += () => { Application.RequestStop (); };
+		var d = new Dialog ("Selection Demo", 60, 20, ok, cancel);
 
 		var animals = new List<string> () { "Alpaca", "Llama", "Lion", "Shark", "Goat" };
 		var msg = new Label ("Use space bar or control-t to toggle selection") {
@@ -483,9 +486,9 @@ static class Demo {
 	#region KeyDown / KeyPress / KeyUp Demo
 	private static void OnKeyDownPressUpDemo ()
 	{
-		var container = new Dialog (
-			"KeyDown & KeyPress & KeyUp demo", 80, 20,
-			new Button ("Close") { Clicked = () => { Application.RequestStop (); } }) {
+		var close = new Button ("Close");
+		close.Clicked += () => { Application.RequestStop (); };
+		var container = new Dialog ("KeyDown & KeyPress & KeyUp demo", 80, 20, close) {
 			Width = Dim.Fill (),
 			Height = Dim.Fill (),
 		};

Terminal.Gui/Views/Button.cs

@@ -201,7 +201,7 @@ namespace Terminal.Gui {
 		///   raised when the button is activated either with
 		///   the mouse or the keyboard.
 		/// </remarks>
-		public Action Clicked;
+		public event Action Clicked;
 
 		///<inheritdoc/>
 		public override bool MouseEvent (MouseEvent me)

UICatalog/Scenarios/Buttons.cs

@@ -29,12 +29,12 @@ namespace UICatalog {
 				//TODO: Change to use Pos.AnchorEnd()
 				Y = Pos.Bottom (Win) - 3,
 				IsDefault = true,
-				Clicked = () => Application.RequestStop (),
 			};
+			defaultButton.Clicked += () => Application.RequestStop ();
 			Win.Add (defaultButton);
 
 			var swapButton = new Button (50, 0, "Swap Default (Absolute Layout)");
-			swapButton.Clicked = () => {
+			swapButton.Clicked += () => {
 				defaultButton.IsDefault = !defaultButton.IsDefault;
 				swapButton.IsDefault = !swapButton.IsDefault;
 			};
@@ -42,7 +42,7 @@ namespace UICatalog {
 
 			static void DoMessage (Button button, ustring txt)
 			{
-				button.Clicked = () => {
+				button.Clicked += () => {
 					var btnText = button.Text.ToString ();
 					MessageBox.Query ("Message", $"Did you click {txt}?", "Yes", "No");
 				};
@@ -82,15 +82,15 @@ namespace UICatalog {
 			Win.Add (button = new Button ("a Newline\nin the button") {
 				X = 2,
 				Y = Pos.Bottom (button) + 1,
-				Clicked = () => MessageBox.Query ("Message", "Question?", "Yes", "No")
 			});
+			button.Clicked += () => MessageBox.Query ("Message", "Question?", "Yes", "No");
 
 			var textChanger = new Button ("Te_xt Changer") {
 				X = 2,
 				Y = Pos.Bottom (button) + 1,
 			};
 			Win.Add (textChanger);
-			textChanger.Clicked = () => textChanger.Text += "!";
+			textChanger.Clicked += () => textChanger.Text += "!";
 
 			Win.Add (button = new Button ("Lets see if this will move as \"Text Changer\" grows") {
 				X = Pos.Right (textChanger) + 2,
@@ -104,7 +104,7 @@ namespace UICatalog {
 			};
 			Win.Add (removeButton);
 			// This in intresting test case because `moveBtn` and below are laid out relative to this one!
-			removeButton.Clicked = () => Win.Remove (removeButton);
+			removeButton.Clicked += () => Win.Remove (removeButton);
 
 			var computedFrame = new FrameView ("Computed Layout") {
 				X = 0,
@@ -121,7 +121,7 @@ namespace UICatalog {
 				Width = 30,
 				ColorScheme = Colors.Error,
 			};
-			moveBtn.Clicked = () => {
+			moveBtn.Clicked += () => {
 				moveBtn.X = moveBtn.Frame.X + 5;
 				// This is already fixed with the call to SetNeedDisplay() in the Pos Dim.
 				//computedFrame.LayoutSubviews (); // BUGBUG: This call should not be needed. View.X is not causing relayout correctly
@@ -135,7 +135,7 @@ namespace UICatalog {
 				Width = 30,
 				ColorScheme = Colors.Error,
 			};
-			sizeBtn.Clicked = () => {
+			sizeBtn.Clicked += () => {
 				sizeBtn.Width = sizeBtn.Frame.Width + 5;
 				//computedFrame.LayoutSubviews (); // FIXED: This call should not be needed. View.X is not causing relayout correctly
 			};
@@ -153,7 +153,7 @@ namespace UICatalog {
 			var moveBtnA = new Button (0, 0, "Move This Button via Frame") {
 				ColorScheme = Colors.Error,
 			};
-			moveBtnA.Clicked = () => {
+			moveBtnA.Clicked += () => {
 				moveBtnA.Frame = new Rect (moveBtnA.Frame.X + 5, moveBtnA.Frame.Y, moveBtnA.Frame.Width, moveBtnA.Frame.Height);
 			};
 			absoluteFrame.Add (moveBtnA);
@@ -162,7 +162,7 @@ namespace UICatalog {
 			var sizeBtnA = new Button (0, 2, " ~  s  gui.cs   master ↑10 = Со_хранить") {
 				ColorScheme = Colors.Error,
 			};
-			sizeBtnA.Clicked = () => {
+			sizeBtnA.Clicked += () => {
 				sizeBtnA.Frame = new Rect (sizeBtnA.Frame.X, sizeBtnA.Frame.Y, sizeBtnA.Frame.Width + 5, sizeBtnA.Frame.Height);
 			};
 			absoluteFrame.Add (sizeBtnA);
@@ -213,7 +213,7 @@ namespace UICatalog {
 				Width = Dim.Width (computedFrame) - 2,
 				ColorScheme = Colors.TopLevel,
 			};
-			moveHotKeyBtn.Clicked = () => {
+			moveHotKeyBtn.Clicked += () => {
 				moveHotKeyBtn.Text = MoveHotkey (moveHotKeyBtn.Text);
 			};
 			Win.Add (moveHotKeyBtn);
@@ -225,7 +225,7 @@ namespace UICatalog {
 				Width = Dim.Width (absoluteFrame) - 2, // BUGBUG: Not always the width isn't calculated correctly.
 				ColorScheme = Colors.TopLevel,
 			};
-			moveUnicodeHotKeyBtn.Clicked = () => {
+			moveUnicodeHotKeyBtn.Clicked += () => {
 				moveUnicodeHotKeyBtn.Text = MoveHotkey (moveUnicodeHotKeyBtn.Text);
 			};
 			Win.Add (moveUnicodeHotKeyBtn);

UICatalog/Scenarios/Clipping.cs

@@ -69,11 +69,12 @@ namespace UICatalog {
 				Height = Dim.Fill (3),
 				ColorScheme = Colors.TopLevel
 			};
-			embedded3.Add (new Button (2, 2, "click me") {
-				Clicked = () => {
-					MessageBox.Query (10, 5, "Test", "test message", "Ok");
-				}
-			});
+
+			var testButton = new Button (2, 2, "click me");
+			testButton.Clicked += () => {
+				MessageBox.Query (10, 5, "Test", "test message", "Ok");
+			};
+			embedded3.Add (testButton);
 			embedded2.Add (embedded3);
 
 			scrollView.Add (embedded1);

UICatalog/Scenarios/ComputedLayout.cs

@@ -125,7 +125,7 @@ namespace UICatalog {
 			};
 			// TODO: Use Pos.Width instead of (Right-Left) when implemented (#502)
 			anchorButton.X = Pos.AnchorEnd () - (Pos.Right (anchorButton) - Pos.Left (anchorButton));
-			anchorButton.Clicked = () => {
+			anchorButton.Clicked += () => {
 				// Ths demonstrates how to have a dynamically sized button
 				// Each time the button is clicked the button's text gets longer
 				// The call to Win.LayoutSubviews causes the Computed layout to
@@ -152,7 +152,7 @@ namespace UICatalog {
 			var leftButton = new Button ("Left") {
 				Y = Pos.Bottom (Win) - 3
 			};
-			leftButton.Clicked = () => {
+			leftButton.Clicked += () => {
 				// Ths demonstrates how to have a dynamically sized button
 				// Each time the button is clicked the button's text gets longer
 				// The call to Win.LayoutSubviews causes the Computed layout to
@@ -167,7 +167,7 @@ namespace UICatalog {
 				X = Pos.Center (),
 				Y = Pos.AnchorEnd () - 1
 			};
-			centerButton.Clicked = () => {
+			centerButton.Clicked += () => {
 				// Ths demonstrates how to have a dynamically sized button
 				// Each time the button is clicked the button's text gets longer
 				// The call to Win.LayoutSubviews causes the Computed layout to
@@ -180,7 +180,7 @@ namespace UICatalog {
 			var rightButton = new Button ("Right") {
 				Y = Pos.Y (centerButton)
 			};
-			rightButton.Clicked = () => {
+			rightButton.Clicked += () => {
 				// Ths demonstrates how to have a dynamically sized button
 				// Each time the button is clicked the button's text gets longer
 				// The call to Win.LayoutSubviews causes the Computed layout to

UICatalog/Scenarios/Dialogs.cs

@@ -116,52 +116,54 @@ namespace UICatalog {
 				X = Pos.Center(),
 				Y = Pos.Bottom (frame) + 2			,
 				IsDefault = true,
-				Clicked = () => {
-					try {
-						int width = int.Parse (widthEdit.Text.ToString ());
-						int height = int.Parse (heightEdit.Text.ToString ());
-						int numButtons = int.Parse (numButtonsEdit.Text.ToString ());
+			};
+			showDialogButton.Clicked += () => {
+				try {
+					int width = int.Parse (widthEdit.Text.ToString ());
+					int height = int.Parse (heightEdit.Text.ToString ());
+					int numButtons = int.Parse (numButtonsEdit.Text.ToString ());
 
-						var buttons = new List<Button> ();
-						var clicked = -1;
-						for (int i = 0; i < numButtons; i++) {
-							var buttonId = i;
-							var button = new Button (btnText [buttonId % 10], is_default: buttonId == 0) {
-								Clicked = () => {
-									clicked = buttonId;
-									Application.RequestStop ();
-								},
-							};
-							buttons.Add(button);
-						}
+					var buttons = new List<Button> ();
+					var clicked = -1;
+					for (int i = 0; i < numButtons; i++) {
+						var buttonId = i;
+						var button = new Button (btnText [buttonId % 10],
+							is_default: buttonId == 0);
+						button.Clicked += () => {
+							clicked = buttonId;
+							Application.RequestStop ();
+						};
+						buttons.Add (button);
+					}
 
-						// This tests dynamically adding buttons; ensuring the dialog resizes if needed and 
-						// the buttons are laid out correctly
-						var dialog = new Dialog (titleEdit.Text, width, height, buttons.ToArray ());
-						var add = new Button ("Add a button") {
-							X = Pos.Center (),
-							Y = Pos.Center (),
-							Clicked = () => {
-								var buttonId = buttons.Count;
-								var button = new Button (btnText [buttonId % 10], is_default: buttonId == 0) {
-									Clicked = () => {
-										clicked = buttonId;
-										Application.RequestStop ();
-									},
-								};
-								buttons.Add (button);
-								dialog.AddButton (button);
-							},
+					// This tests dynamically adding buttons; ensuring the dialog resizes if needed and 
+					// the buttons are laid out correctly
+					var dialog = new Dialog (titleEdit.Text, width, height,
+						buttons.ToArray ());
+					var add = new Button ("Add a button") {
+						X = Pos.Center (),
+						Y = Pos.Center (),
+
+					};
+					add.Clicked += () => {
+						var buttonId = buttons.Count;
+						var button = new Button (btnText [buttonId % 10],
+							is_default: buttonId == 0);
+						button.Clicked += () => {
+							clicked = buttonId;
+							Application.RequestStop ();
 						};
-						dialog.Add (add);
+						buttons.Add (button);
+						dialog.AddButton (button);
+					};
+					dialog.Add (add);
 
-						Application.Run (dialog);
-						buttonPressedLabel.Text = $"{clicked}";
+					Application.Run (dialog);
+					buttonPressedLabel.Text = $"{clicked}";
 
-					} catch (FormatException) {
-						buttonPressedLabel.Text = "Invalid Options";
-					}
-				},
+				} catch (FormatException) {
+					buttonPressedLabel.Text = "Invalid Options";
+				}
 			};
 			Win.Add (showDialogButton);
 

UICatalog/Scenarios/DynamicMenuBar.cs

@@ -270,13 +270,19 @@ namespace UICatalog {
 			var _btnOk = new Button ("Ok") {
 				X = Pos.Left (_lblTitle) + 20,
 				Y = Pos.Bottom (_rbChkStyle) + 1,
-				Clicked = () => {
-					if (ustring.IsNullOrEmpty (_txtTitle.Text) && _currentEditMenuBarItem != null) {
-						MessageBox.ErrorQuery ("Invalid title", "Must enter a valid title!.", "Ok");
-					} else if (_currentEditMenuBarItem != null) {
-						var menuItem = new DynamicMenuItem (_txtTitle.Text, _txtHelp.Text, _txtAction.Text, _ckbIsTopLevel != null ? _ckbIsTopLevel.Checked : false, _ckbSubMenu != null ? _ckbSubMenu.Checked : false, _rbChkStyle.SelectedItem == 0 ? MenuItemCheckStyle.NoCheck : _rbChkStyle.SelectedItem == 1 ? MenuItemCheckStyle.Checked : MenuItemCheckStyle.Radio);
-						UpdateMenuItem (_currentEditMenuBarItem, menuItem, _lstMenus.SelectedItem);
-					}
+			};
+			_btnOk.Clicked += () => {
+				if (ustring.IsNullOrEmpty (_txtTitle.Text) && _currentEditMenuBarItem != null) {
+					MessageBox.ErrorQuery ("Invalid title", "Must enter a valid title!.", "Ok");
+				} else if (_currentEditMenuBarItem != null) {
+					var menuItem = new DynamicMenuItem (_txtTitle.Text, _txtHelp.Text,
+						_txtAction.Text,
+						_ckbIsTopLevel != null ? _ckbIsTopLevel.Checked : false,
+						_ckbSubMenu != null ? _ckbSubMenu.Checked : false,
+						_rbChkStyle.SelectedItem == 0 ? MenuItemCheckStyle.NoCheck :
+						_rbChkStyle.SelectedItem == 1 ? MenuItemCheckStyle.Checked :
+						MenuItemCheckStyle.Radio);
+					UpdateMenuItem (_currentEditMenuBarItem, menuItem, _lstMenus.SelectedItem);
 				}
 			};
 			_frmMenuDetails.Add (_btnOk);
@@ -284,15 +290,15 @@ namespace UICatalog {
 			var _btnCancel = new Button ("Cancel") {
 				X = Pos.Right (_btnOk) + 3,
 				Y = Pos.Top (_btnOk),
-				Clicked = () => {
-					_txtTitle.Text = ustring.Empty;
-				}
+			};
+			_btnCancel.Clicked += () => {
+				_txtTitle.Text = ustring.Empty;
 			};
 			_frmMenuDetails.Add (_btnCancel);
 
 			Add (_frmMenuDetails);
 
-			_btnAdd.Clicked = () => {
+			_btnAdd.Clicked += () => {
 				if (MenuBar == null) {
 					MessageBox.ErrorQuery ("Menu Bar Error", "Must add a MenuBar first!", "Ok");
 					_btnAddMenuBar.SetFocus ();
@@ -328,7 +334,7 @@ namespace UICatalog {
 				}
 			};
 
-			_btnRemove.Clicked = () => {
+			_btnRemove.Clicked += () => {
 				var menuItem = DataContext.Menus.Count > 0 ? DataContext.Menus [_lstMenus.SelectedItem].MenuItem : null;
 				if (menuItem != null) {
 					var childrens = ((MenuBarItem)_currentMenuBarItem).Children;
@@ -355,7 +361,7 @@ namespace UICatalog {
 				}
 			};
 
-			_btnMenuBarUp.Clicked = () => {
+			_btnMenuBarUp.Clicked += () => {
 				var i = _currentSelectedMenuBar;
 				var menuItem = _menuBar != null && _menuBar.Menus.Length > 0 ? _menuBar.Menus [i] : null;
 				if (menuItem != null) {
@@ -369,7 +375,7 @@ namespace UICatalog {
 				}
 			};
 
-			_btnMenuBarDown.Clicked = () => {
+			_btnMenuBarDown.Clicked += () => {
 				var i = _currentSelectedMenuBar;
 				var menuItem = _menuBar != null && _menuBar.Menus.Length > 0 ? _menuBar.Menus [i] : null;
 				if (menuItem != null) {
@@ -383,7 +389,7 @@ namespace UICatalog {
 				}
 			};
 
-			_btnUp.Clicked = () => {
+			_btnUp.Clicked += () => {
 				var i = _lstMenus.SelectedItem;
 				var menuItem = DataContext.Menus.Count > 0 ? DataContext.Menus [i].MenuItem : null;
 				if (menuItem != null) {
@@ -398,7 +404,7 @@ namespace UICatalog {
 				}
 			};
 
-			_btnDown.Clicked = () => {
+			_btnDown.Clicked += () => {
 				var i = _lstMenus.SelectedItem;
 				var menuItem = DataContext.Menus.Count > 0 ? DataContext.Menus [i].MenuItem : null;
 				if (menuItem != null) {
@@ -413,7 +419,7 @@ namespace UICatalog {
 				}
 			};
 
-			_btnAddMenuBar.Clicked = () => {
+			_btnAddMenuBar.Clicked += () => {
 				var item = EnterMenuItem (null);
 				if (ustring.IsNullOrEmpty (item.title)) {
 					return;
@@ -439,7 +445,7 @@ namespace UICatalog {
 				_menuBar.SetNeedsDisplay ();
 			};
 
-			_btnRemoveMenuBar.Clicked = () => {
+			_btnRemoveMenuBar.Clicked += () => {
 				if (_menuBar != null && _menuBar.Menus.Length > 0) {
 					_menuBar.Menus [_currentSelectedMenuBar] = null;
 					int i = 0;
@@ -478,14 +484,14 @@ namespace UICatalog {
 				}
 			};
 
-			_btnPrevious.Clicked = () => {
+			_btnPrevious.Clicked += () => {
 				if (_currentSelectedMenuBar - 1 > -1) {
 					_currentSelectedMenuBar--;
 				}
 				SelectCurrentMenuBarItem ();
 			};
 
-			_btnNext.Clicked = () => {
+			_btnNext.Clicked += () => {
 				if (_menuBar != null && _currentSelectedMenuBar + 1 < _menuBar.Menus.Length) {
 					_currentSelectedMenuBar++;
 				}
@@ -506,7 +512,7 @@ namespace UICatalog {
 				EditMenuBarItem (menuBarItem);
 			};
 
-			_btnPreviowsParent.Clicked = () => {
+			_btnPreviowsParent.Clicked += () => {
 				if (_currentMenuBarItem != null && _currentMenuBarItem.Parent != null) {
 					var mi = _currentMenuBarItem;
 					_currentMenuBarItem = _currentMenuBarItem.Parent as MenuBarItem;
@@ -770,20 +776,19 @@ namespace UICatalog {
 				};
 				var _btnOk = new Button ("Ok") {
 					IsDefault = true,
-					Clicked = () => {
-						if (ustring.IsNullOrEmpty (_txtTitle.Text)) {
-							MessageBox.ErrorQuery ("Invalid title", "Must enter a valid title!.", "Ok");
-						} else {
-							Application.RequestStop ();
-						}
-					}
 				};
-				var _btnCancel = new Button ("Cancel") {
-					Clicked = () => {
-						_txtTitle.Text = ustring.Empty;
+				_btnOk.Clicked += () => {
+					if (ustring.IsNullOrEmpty (_txtTitle.Text)) {
+						MessageBox.ErrorQuery ("Invalid title", "Must enter a valid title!.", "Ok");
+					} else {
 						Application.RequestStop ();
 					}
 				};
+				var _btnCancel = new Button ("Cancel");
+				_btnCancel.Clicked += () => {
+					_txtTitle.Text = ustring.Empty;
+					Application.RequestStop ();
+				};
 				var _dialog = new Dialog ("Please enter the menu details.", _btnOk, _btnCancel);
 				_dialog.Add (_lblTitle, _txtTitle, _lblHelp, _txtHelp, _lblAction, _txtAction, _ckbIsTopLevel, _ckbSubMenu, _rbChkStyle);
 				_txtTitle.SetFocus ();

UICatalog/Scenarios/Generic.cs

@@ -7,11 +7,12 @@ namespace UICatalog {
 		public override void Setup ()
 		{
 			// Put your scenario code here, e.g.
-			Win.Add (new Button ("Press me!") {
+			var button = new Button ("Press me!") {
 				X = Pos.Center (),
 				Y = Pos.Center (),
-				Clicked = () => MessageBox.Query (20, 7, "Hi", "Neat?", "Yes", "No")
-			});
+			};
+			button.Clicked += () => MessageBox.Query (20, 7, "Hi", "Neat?", "Yes", "No");
+			Win.Add (button);
 		}
 	}
 }

UICatalog/Scenarios/MessageBoxes.cs

@@ -148,25 +148,25 @@ namespace UICatalog {
 				X = Pos.Center(),
 				Y = Pos.Bottom (frame) + 2			,
 				IsDefault = true,
-				Clicked = () => {
-					try {
-						int width = int.Parse (widthEdit.Text.ToString ());
-						int height = int.Parse (heightEdit.Text.ToString ());
-						int numButtons = int.Parse (numButtonsEdit.Text.ToString ());
+			};
+			showMessageBoxButton.Clicked += () => {
+				try {
+					int width = int.Parse (widthEdit.Text.ToString ());
+					int height = int.Parse (heightEdit.Text.ToString ());
+					int numButtons = int.Parse (numButtonsEdit.Text.ToString ());
 
-						var btns = new List<ustring> ();
-						for (int i = 0; i < numButtons; i++) {
-							btns.Add(btnText[i % 10]);
-						}
-						if (styleRadioGroup.SelectedItem == 0) {
-							buttonPressedLabel.Text = $"{MessageBox.Query (width, height, titleEdit.Text.ToString (), messageEdit.Text.ToString (), btns.ToArray ())}";
-						} else {
-							buttonPressedLabel.Text = $"{MessageBox.ErrorQuery (width, height, titleEdit.Text.ToString (), messageEdit.Text.ToString (), btns.ToArray ())}";
-						}
-					} catch (FormatException) {
-						buttonPressedLabel.Text = "Invalid Options";
+					var btns = new List<ustring> ();
+					for (int i = 0; i < numButtons; i++) {
+						btns.Add(btnText[i % 10]);
+					}
+					if (styleRadioGroup.SelectedItem == 0) {
+						buttonPressedLabel.Text = $"{MessageBox.Query (width, height, titleEdit.Text.ToString (), messageEdit.Text.ToString (), btns.ToArray ())}";
+					} else {
+						buttonPressedLabel.Text = $"{MessageBox.ErrorQuery (width, height, titleEdit.Text.ToString (), messageEdit.Text.ToString (), btns.ToArray ())}";
 					}
-				},
+				} catch (FormatException) {
+					buttonPressedLabel.Text = "Invalid Options";
+				}
 			};
 			Win.Add (showMessageBoxButton);
 

UICatalog/Scenarios/Progress.cs

@@ -58,18 +58,18 @@ namespace UICatalog {
 				var startButton = new Button ("Start Timer") {
 					X = Pos.Right (LeftFrame) + 1,
 					Y = 0,
-					Clicked = () => Start()
 				};
+				startButton.Clicked += () => Start ();
 				var pulseButton = new Button ("Pulse") {
 					X = Pos.Right (startButton) + 2,
 					Y = Pos.Y (startButton),
-					Clicked = () => Pulse()
 				};
+				pulseButton.Clicked += () => Pulse ();
 				var stopbutton = new Button ("Stop Timer") {
 					X = Pos.Right (pulseButton) + 2,
 					Y = Pos.Top (pulseButton),
-					Clicked = () => Stop()
 				};
+				stopbutton.Clicked += () => Stop ();
 
 				Add (startButton);
 				Add (pulseButton);
@@ -225,7 +225,7 @@ namespace UICatalog {
 				X = Pos.Center (),
 				Y = Pos.Bottom(mainLoopTimeoutDemo) + 1,
 			};
-			startBoth.Clicked = () => {
+			startBoth.Clicked += () => {
 				systemTimerDemo.Start ();
 				mainLoopTimeoutDemo.Start ();
 			};

UICatalog/Scenarios/Scrolling.cs

@@ -149,18 +149,20 @@ namespace UICatalog {
 				verticalRuler.Text = vrule.Repeat ((int)Math.Ceiling ((double)(verticalRuler.Bounds.Height * 2) / (double)rule.Length)) [0..(verticalRuler.Bounds.Height * 2)];
 			};
 
-			scrollView.Add (new Button ("Press me!") {
+			var pressMeButton = new Button ("Press me!") {
 				X = 3,
 				Y = 3,
-				Clicked = () => MessageBox.Query (20, 7, "MessageBox", "Neat?", "Yes", "No")
-			});
+			};
+			pressMeButton.Clicked += () => MessageBox.Query (20, 7, "MessageBox", "Neat?", "Yes", "No");
+			scrollView.Add (pressMeButton);
 
-			scrollView.Add (new Button ("A very long button. Should be wide enough to demo clipping!") {
+			var aLongButton = new Button ("A very long button. Should be wide enough to demo clipping!") {
 				X = 3,
 				Y = 4,
 				Width = Dim.Fill (6),
-				Clicked = () => MessageBox.Query (20, 7, "MessageBox", "Neat?", "Yes", "No")
-			});
+			};
+			aLongButton.Clicked += () => MessageBox.Query (20, 7, "MessageBox", "Neat?", "Yes", "No");
+			scrollView.Add (aLongButton);
 
 			scrollView.Add (new TextField ("This is a test of...") {
 				X = 3,
@@ -189,7 +191,7 @@ namespace UICatalog {
 			};
 			// TODO: Use Pos.Width instead of (Right-Left) when implemented (#502)
 			anchorButton.X = Pos.AnchorEnd () - (Pos.Right (anchorButton) - Pos.Left (anchorButton));
-			anchorButton.Clicked = () => {
+			anchorButton.Clicked += () => {
 				// Ths demonstrates how to have a dynamically sized button
 				// Each time the button is clicked the button's text gets longer
 				// The call to Win.LayoutSubviews causes the Computed layout to

UICatalog/Scenarios/SystemConsole.cs

@@ -24,11 +24,12 @@ namespace UICatalog {
 
 		public override void Setup ()
 		{
-		       Win.Add (new Button ("Press me!") {
-			       X = Pos.Center (),
-			       Y = Pos.Center (),
-			       Clicked = () => MessageBox.Query (20, 7, "Hi", "Neat?", "Yes", "No")
-		       });
+			var pressMe = new Button ("Press me!") {
+				X = Pos.Center (),
+				Y = Pos.Center (),
+			};
+			pressMe.Clicked += () => MessageBox.Query (20, 7, "Hi", "Neat?", "Yes", "No");
+			Win.Add (pressMe);
 		}
 	}
 }

UICatalog/Scenarios/TextAlignments.cs

@@ -51,20 +51,21 @@ namespace UICatalog {
 			var unicodeSample = new Button ("Unicode Sample") {
 				X = Pos.Right (edit) + 1,
 				Y = 0,
-				Clicked = () => {
-					edit.Text = unicodeSampleText;
-				}
+			};
+			unicodeSample.Clicked += () => {
+				edit.Text = unicodeSampleText;
 			};
 			Win.Add (unicodeSample);
 
 			var update = new Button ("_Update") {
 				X = Pos.Right (edit) + 1,
 				Y = Pos.Bottom (edit) - 1,
-				Clicked = () => {
-					foreach (var alignment in alignments) {
-						singleLines [(int)alignment].Text = edit.Text;
-						multipleLines [(int)alignment].Text = edit.Text;
-					}
+				
+			};
+			update.Clicked += () => {
+				foreach (var alignment in alignments) {
+					singleLines [(int) alignment].Text = edit.Text;
+					multipleLines [(int) alignment].Text = edit.Text;
 				}
 			};
 			Win.Add (update);

UICatalog/Scenarios/TimeAndDate.cs

@@ -99,23 +99,24 @@ namespace UICatalog {
 			};
 			Win.Add (lblDateFmt);
 
-			Win.Add (new Button ("Swap Long/Short & Read/Read Only") {
+			var swapButton = new Button ("Swap Long/Short & Read/Read Only") {
 				X = Pos.Center (),
 				Y = Pos.Bottom (Win) - 5,
-				Clicked = () => {
-					longTime.ReadOnly = !longTime.ReadOnly;
-					shortTime.ReadOnly = !shortTime.ReadOnly;
+			};
+			swapButton.Clicked += () => {
+				longTime.ReadOnly = !longTime.ReadOnly;
+				shortTime.ReadOnly = !shortTime.ReadOnly;
 
-					longTime.IsShortFormat = !longTime.IsShortFormat;
-					shortTime.IsShortFormat = !shortTime.IsShortFormat;
+				longTime.IsShortFormat = !longTime.IsShortFormat;
+				shortTime.IsShortFormat = !shortTime.IsShortFormat;
 
-					longDate.ReadOnly = !longDate.ReadOnly;
-					shortDate.ReadOnly = !shortDate.ReadOnly;
+				longDate.ReadOnly = !longDate.ReadOnly;
+				shortDate.ReadOnly = !shortDate.ReadOnly;
 
-					longDate.IsShortFormat = !longDate.IsShortFormat;
-					shortDate.IsShortFormat = !shortDate.IsShortFormat;
-				}
-			});
+				longDate.IsShortFormat = !longDate.IsShortFormat;
+				shortDate.IsShortFormat = !shortDate.IsShortFormat;
+			};
+			Win.Add (swapButton);
 		}
 
 		private void TimeChanged (DateTimeEventArgs<TimeSpan> e)

UICatalog/Scenarios/WindowsAndFrameViews.cs

@@ -60,12 +60,13 @@ namespace UICatalog {
 				Height = Dim.Percent (15)
 			};
 			Win.ColorScheme = Colors.Dialog;
-			Win.Add (new Button ($"Padding of container is {padding}") {
+			var paddingButton = new Button ($"Padding of container is {padding}") {
 				X = Pos.Center (),
 				Y = 0,
 				ColorScheme = Colors.Error,
-				Clicked = () => About ()
-			});
+			};
+			paddingButton.Clicked += () => About ();
+			Win.Add (paddingButton);
 			Win.Add (new Button ("Press ME! (Y = Pos.AnchorEnd(1))") {
 				X = Pos.Center (),
 				Y = Pos.AnchorEnd (1),
@@ -83,12 +84,14 @@ namespace UICatalog {
 					Height = contentHeight + (i * 2) + 2,
 				};
 				win.ColorScheme = Colors.Dialog;
-				win.Add (new Button ("Press me! (Y = 0)") {
+				var pressMeButton = new Button ("Press me! (Y = 0)") {
 					X = Pos.Center (),
 					Y = 0,
 					ColorScheme = Colors.Error,
-					Clicked = () => MessageBox.ErrorQuery (win.Title.ToString (), "Neat?", "Yes", "No")
-				});
+				};
+				pressMeButton.Clicked += () =>
+					MessageBox.ErrorQuery (win.Title.ToString (), "Neat?", "Yes", "No");
+				win.Add (pressMeButton);
 				var subWin = new Window ("Sub Window") {
 					X = Pos.Percent (0),
 					Y = 1,