1 files changed, 124 insertions, 0 deletions
diff --git a/examples/gui/command_interface/frm_main.pas b/examples/gui/command_interface/frm_main.pas
new file mode 100644
index 00000000..28bb18cf
--- /dev/null
+++ b/examples/gui/command_interface/frm_main.pas
@@ -0,0 +1,124 @@
+{
+  This demonstrates the usage of ICommand and ICommandHolder. They work
+  similar to Delphi's TAction classes
+}
+unit frm_main;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  SysUtils, Classes, gfxbase, fpgfx, gui_edit, 
+  gfx_widget, gui_form, gui_label, gui_button,
+  gui_listbox, gui_memo, gui_combobox, gui_grid, 
+  gui_dialogs, gui_checkbox, gui_tree, gui_trackbar, 
+  gui_progressbar, gui_radiobutton, gui_tab, gui_menu,
+  gui_bevel;
+
+type
+
+  TMainForm = class(TfpgForm)
+  private
+    procedure CommandHandler(Sender: TObject);
+  public
+    {@VFD_HEAD_BEGIN: MainForm}
+    btnAdd: TfpgButton;
+    memName1: TfpgMemo;
+    btnQuit: TfpgButton;
+    MainMenu: TfpgMenuBar;
+    mnuFile: TfpgPopupMenu;
+    {@VFD_HEAD_END: MainForm}
+    procedure AfterCreate; override;
+  end;
+
+{@VFD_NEWFORM_DECL}
+
+implementation
+
+uses
+  gfx_command_intf,
+  commands;
+
+{@VFD_NEWFORM_IMPL}
+
+{ A single event handler that handles all Command based events. }
+procedure TMainForm.CommandHandler(Sender: TObject);
+var
+  cmd: ICommand;
+  holder: ICommandHolder;
+begin
+  if Supports(Sender, ICommandHolder, holder) then
+  begin
+    cmd := holder.GetCommand;
+    cmd.Execute;
+  end;
+end;
+
+procedure TMainForm.AfterCreate;
+begin
+  {@VFD_BODY_BEGIN: MainForm}
+  Name := 'MainForm';
+  SetPosition(293, 236, 284, 254);
+  WindowTitle := 'Command Interface Test';
+  WindowPosition := wpScreenCenter;
+
+  btnAdd := TfpgButton.Create(self);
+  with btnAdd do
+  begin
+    Name := 'btnAdd';
+    SetPosition(204, 36, 75, 24);
+    Text := 'Add';
+    FontDesc := '#Label1';
+    ImageName := '';
+    OnClick := @CommandHandler;
+  end;
+
+  memName1 := TfpgMemo.Create(self);
+  with memName1 do
+  begin
+    Name := 'memName1';
+    SetPosition(8, 36, 188, 208);
+    FontDesc := '#Edit1';
+  end;
+
+  btnQuit := TfpgButton.Create(self);
+  with btnQuit do
+  begin
+    Name := 'btnQuit';
+    SetPosition(204, 220, 75, 24);
+    Text := 'Quit';
+    FontDesc := '#Label1';
+    ImageName := '';
+    OnClick := @CommandHandler;
+  end;
+
+  MainMenu := TfpgMenuBar.Create(self);
+  with MainMenu do
+  begin
+    Name := 'MainMenu';
+    SetPosition(0, 0, 284, 24);
+    Anchors := [anLeft,anRight,anTop];
+  end;
+
+  mnuFile := TfpgPopupMenu.Create(self);
+  with mnuFile do
+  begin
+    Name := 'mnuFile';
+    SetPosition(44, 72, 120, 20);
+    AddMenuItem('Quit', '', @CommandHandler);
+  end;
+
+  {@VFD_BODY_END: MainForm}
+  
+  MainMenu.AddMenuItem('File', nil).SubMenu := mnuFile;
+
+  // instantiate the Command classes
+  btnAdd.SetCommand(TAddCommand.Create(memName1));
+  btnQuit.SetCommand(TExitCommand.Create);
+  // The menu item File|Quit shares the command of btnQuit
+  mnuFile.MenuItemByName('Quit').SetCommand(btnQuit.GetCommand);
+end;
+
+
+end.