Author: Jonas Bilinkevicius

How to change the caption of a MessageDlg

Answer:

Build your own:
1   
2   function MyMessageDlg(const Msg: string; DlgType: TMsgDlgType; Buttons:
3     TMsgDlgButtons;
4     const ACaption: string = 'Hi'; DefaultButtonIndex: Integer = -1; HelpCtx: Longint 
5   =
6       0): Integer;
7   var
8     Index: Integer;
9     ButtonIndex: Integer;
10  begin
11    with CreateMessageDialog(Msg, DlgType, Buttons) do
12    try
13      HelpContext := HelpCtx;
14      if ACaption <> '' then
15        Caption := ACaption;
16      if DefaultButtonIndex >= 0 then
17      begin
18        ButtonIndex := -1;
19        for Index := 0 to ControlCount - 1 do
20        begin
21          if Controls[Index] is TButton then
22          begin
23            Inc(ButtonIndex);
24            TButton(Controls[Index]).default := ButtonIndex = DefaultButtonIndex;
25            if ButtonIndex = DefaultButtonIndex then
26              ActiveControl := TButton(Controls[Index]);
27          end;
28        end;
29      end;
30      Result := ShowModal;
31    finally
32      free;
33    end;
34  end;