inno setup bmp图像出现在单个页面上

我希望 bmp 图像出现在单个页面“selectadditionaltasks”上，但它出现在所有页面上。我究竟做错了什么？

procedure LogoOnClick(Sender: TObject);
var ResCode: Integer;
begin
end;
procedure LogoWizard();

var
  BtnPanel: TPanel;
  BtnImage: TBitmapImage;
begin
  ExtractTemporaryFile('Logo.bmp')

  BtnPanel:=TPanel.Create(WizardForm)
  with BtnPanel do begin
    Left:=40
    Top:=250
    Width:=455
    Height:=42
    Cursor:=crHand
    OnClick:=@logoOnClick
    Parent:=WizardForm
  end
  BtnImage:=TBitmapImage.Create(WizardForm)
  with BtnImage do begin
    AutoSize:=True;
    Enabled:=False;
    Bitmap.LoadFromFile(ExpandConstant('{tmp}')+'\Logo.bmp')
    Parent:=BtnPanel
  end
end;
procedure InitializeWizard();
begin
  LogoWizard();
end;

图像示例

通过设置一个Parent你的BtnPanel to the WizardForm您是在告诉您，您希望该面板成为整个向导表单的直接子级。你必须改变BtnPanel.Parent属性到您希望在其上显示该面板的页面表面。

因为您希望您的图像出现在选择附加任务向导页面，我能建议的最好方法是仅使用图像而不使用底层面板并调整大小TasksList复选框，默认情况下它还覆盖页面的底部区域，您要在其中放置图像。这会执行以下脚本。您可以按照commented version https://stackoverflow.com/revisions/12939933/4该脚本的内容也是如此：

[Setup]
AppName=My Program
AppVersion=1.5
DefaultDirName={pf}\My Program

[Files]
Source: "Logo.bmp"; Flags: dontcopy

[Tasks]
Name: associate; Description: "&Associate files"; Flags: unchecked
Name: desktopicon; Description: "Create a &desktop icon"; Flags: unchecked

[Code]
procedure LogoOnClick(Sender: TObject);
begin
  MsgBox('Hello!', mbInformation, MB_OK);
end;

procedure InitializeWizard;
var
  BtnImage: TBitmapImage;
begin
  ExtractTemporaryFile('Logo.bmp');

  BtnImage := TBitmapImage.Create(WizardForm);
  with BtnImage do 
  begin
    Parent := WizardForm.SelectTasksPage;
    Bitmap.LoadFromFile(ExpandConstant('{tmp}')+'\Logo.bmp');
    AutoSize := True;
    Left := 0;
    Top := WizardForm.SelectTasksPage.Top + WizardForm.SelectTasksPage.Height - 
      Height - 8;
    Cursor := crHand;
    OnClick := @LogoOnClick;            
  end;
  WizardForm.TasksList.Height :=
    WizardForm.TasksList.Height - BtnImage.Height - 8;
end;