Inno Setup-如何在调整大小的向导中居中放置动画gif [英] Inno Setup - how to center an animated gif in resized wizard

问题描述

我想将动画gif居中放置在安装程序(WizardSizePercent=150)中所有页面的中间，而不使用值.

I would like to center my animated gif right in the middle of all pages in my installer ( WizardSizePercent=150) without using values.

这是我的代码:

var
  ParentForm: TSetupForm;

begin
  TimerID := 0;
  SlideID := 0;
  ContentHeight := ParentForm.Top + ParentForm.Height;
  ExtractTemporaryFile('Image1.bmp');
  ExtractTemporaryFile('Image2.bmp');
  ExtractTemporaryFile('Image3.bmp');
  ExtractTemporaryFile('Image4.bmp');
  ExtractTemporaryFile('Image5.bmp');
  ExtractTemporaryFile('Image6.bmp');


  Panel := TPanel.Create(ParentForm);
  Panel.Parent := ParentForm;
  Panel.Left := 185;
  Panel.Top := ParentForm.Top + 130;
  Panel.Width := 1000;
  Panel.Height := 380;
  Panel.Visible := True;

  BackImage := TBitmapImage.Create(ParentForm);
  BackImage.Parent := Panel;
  BackImage.Width:= 1000;
  BackImage.Height:= 380;
  BackImage.Left := (Panel.Height - BackImage.Height) div 2;
  BackImage.Top := (Panel.Height - BackImage.Height) div 2;
  BackImage.Bitmap.LoadFromFile(ExpandConstant('{tmp}\Image1.bmp'));
  StartSlideTimer;
end;

如何更改ContentHeight，Panel和BackImage的值?

推荐答案

仅在 CurPageChanged 中，而不是在InitializeWizard中.

或者更好的是，拥有一个更强大的解决方案，例如即使使用 WizardResizable ，也可以通过更新图像坐标来响应WizardForm.OnResize (或者Panel坐标-尽管我不明白它的目的).例如，请参见在Inno Setup中将控件宽度设置为自定义页面的一半SurfaceWidth不能正常工作.

Or better, to have a more robust solution, that works e.g. even with WizardResizable, respond to WizardForm.OnResize by updating the image coordinates (or rather the Panel coordinates – though I do not understand its purpose). For an example, see Setting control width to half of custom page SurfaceWidth does not work correctly in Inno Setup.

还请注意，您不能使用常量坐标.您的图片在DPI较高的显示器上无法正确居中.要么缩放坐标，要么例如检查 Inno Setup在自定义页面上放置图片/控件.或者，以您的情况为佳，如果您根据图像和窗口的大小以编程方式计算居中坐标–为此，请检查在Inno Setup中，如何在窗口中居中放置一些文本?

Also note that you cannot use constant coordinates. Your image would not center correctly on high DPI displays. Either scale the coordinates – for that check for example Inno Setup Placing image/control on custom page. Or in your case, it would be better, if you calculate the centered coordinates programmatically based on the image and window sizes – for that, check the In Inno Setup, how do I center some text in the window?

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