How can I add a image banner on the bottom left of the wizard window?

Question

How can I add an image to the setup wizard, the bottom left?

Answer 1

As @TLama commented: Create a TBitmapImage, set its parent to WizardForm, position it where you want and load the picture from file.

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

[Code]

<event('InitializeWizard')>
procedure InitializeWizardAddLogo();
var
  Image: TBitmapImage;
begin
  Image := TBitmapImage.Create(WizardForm);
  with Image do
  begin
    Parent := WizardForm;
    ExtractTemporaryFile('logo.bmp');
    Bitmap.LoadFromFile(ExpandConstant('{tmp}')+'\logo.bmp');
    AutoSize := True;
    AutoSize := False;
    Width := ScaleX(Width);
    Height := ScaleY(Height);
    Stretch := True;
    Left := ScaleX(10);
    Top :=
      (WizardForm.ClientHeight + WizardForm.Bevel.Top +
       WizardForm.Bevel.Height - Height)
      div 2;
  end;
end;

(the code [with event attribute] is for Inno Setup 6)

Though tricky part is to handle screen scaling correctly. Hence, the AutoSize trick and Scale* calls.

You even might need to have different versions of the logo for different scaling factors.
See Inno Setup WizardImageFile looks bad with font scaling on Windows 7

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