Mega Code Archive
Adding new Standard Actions
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Title: Adding new Standard Actions
Question: how to make your own standard actions
Answer:
You can register your own new action classes with
RegisterActions.
Here is a usefull example of a action printing the current form:
Don't forget to add this unit to a design time package.
unit AjsStdActions;
interface
uses windows, StdActns, classes, forms;
type
TWindowPrint = class(TWindowAction)
public
constructor Create(AOwner: TComponent); override;
procedure ExecuteTarget(Target: TObject); override;
function HandlesTarget(Target: TObject): Boolean;override;
procedure UpdateTarget(Target: TObject); override;
end;
procedure Register;
implementation
uses ActnList, Dialogs, Menus;
{ TWindowPrint }
constructor TWindowPrint.Create(AOwner: TComponent);
begin
inherited;
// new default Shortcut
ShortCut := TextToShortCut('F3');
// new default Caption
Caption := 'Print Window';
end;
procedure TWindowPrint.ExecuteTarget(Target: TObject);
begin
// only for testing
ShowMessage('Printing Windows....');
// print the current form
GetForm(Target).Print;
end;
function TWindowPrint.HandlesTarget(Target: TObject): Boolean;
begin
Result := ((Form nil) and (Target = Form) or
(Form = nil) and (Target is TForm));
end;
procedure TWindowPrint.UpdateTarget(Target: TObject);
begin
// override the behavior of TWindow.UpdateTarget
end;
procedure Register;
begin
// register our new action class
RegisterActions('window', [TWindowPrint], nil);
end;
end.
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