MsgBox - 制作不可点击的确定按钮并更改为倒计时 - Inno Setup

Question

如何将确定按钮变成这样的倒数计时器...

5,4,3,2,1,0 [MsgBox自动关闭]不显示0
进入设置程序。

按钮不应该是可点击和淡出的。喜欢不活跃 window/button/box.

这个：

不是这个：

我使用这个问题的代码：How to show a message box for a specified time?

Answer 1

没有具有此类功能的内置函数。既不在 Inno Setup 中，也不在 WinAPI 中。

您必须自己实现对话框并使用计时器实现倒计时。

[Code]

function SetTimer(hWnd: LongWord; nIDEvent, uElapse: LongWord; 
  lpTimerFunc: LongWord): LongWord; external 'SetTimer@user32.dll stdcall';
function KillTimer(hWnd: HWND; uIDEvent: LongWord): BOOL;
  external 'KillTimer@user32.dll stdcall';

var
  CountdownButton: TNewButton;
  Countdown: Integer;

procedure UpdateCountDownButtonCaption;
begin
  CountdownButton.Caption := Format('%d sec', [Countdown]);
end;

procedure CountdownProc(
  H: LongWord; Msg: LongWord; IdEvent: LongWord; Time: LongWord);
begin
  Dec(Countdown);
  if Countdown = 0 then
  begin
    CountdownButton.Enabled := True;
    TForm(CountdownButton.Parent).Close;
  end
    else
  begin
    UpdateCountDownButtonCaption;
  end;
end;

procedure CountdownMessageBoxCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
  { Prevent the dialog from being close by the X button and Alt-F4 }
  CanClose := CountdownButton.Enabled;
end;

procedure CountdownMessageBox(Message: string; Seconds: Integer);
var
  Form: TSetupForm;
  MessageLabel: TLabel;
  Timer: LongWord;
begin
  Form := CreateCustomForm;
  try
    Form.ClientWidth := ScaleX(256);
    Form.ClientHeight := ScaleY(96);
    Form.Caption := 'Information';
    Form.Position := poMainFormCenter;
    Form.OnCloseQuery := @CountdownMessageBoxCloseQuery;

    MessageLabel := TLabel.Create(Form);
    MessageLabel.Top := ScaleY(16);
    MessageLabel.Left := ScaleX(16);
    MessageLabel.AutoSize := True;
    MessageLabel.Caption := Message;
    MessageLabel.Parent := Form;

    if CountdownButton <> nil then
      RaiseException('Countdown in progress already');

    Countdown := Seconds;

    CountdownButton := TNewButton.Create(Form);
    CountdownButton.Parent := Form;
    CountdownButton.Width := ScaleX(88);
    CountdownButton.Height := ScaleY(26);
    CountdownButton.Left :=
      Form.ClientWidth - CountdownButton.Width - ScaleX(18);
    CountdownButton.Top :=
      Form.ClientHeight - CountdownButton.Height - ScaleX(11);
    UpdateCountDownButtonCaption;
    CountdownButton.Name := 'CountdownButton';
    CountdownButton.ModalResult := mrOk;
    CountdownButton.Default := True;
    CountdownButton.Enabled := False;

    Timer := SetTimer(0, 0, 1000, CreateCallback(@CountdownProc));

    try
      Form.ShowModal();
    finally
      KillTimer(0, Timer);
    end;
  finally
    Form.Free();
    CountdownButton := nil;
  end;
end;

对于 CreateCallback function, you need Inno Setup 6. If you are stuck with Inno Setup 5, you can use WrapCallback function from InnoTools InnoCallback 库。

像这样使用它：

CountdownMessageBox('Message here', 10);

MsgBox - 制作不可点击的确定按钮并更改为倒计时 - Inno Setup

MsgBox - Make unclickable OK Button and change to countdown - Inno Setup

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