[alert30]

detiedyatosla, другой скрипт для фона, только требуется библиотеку isxbb.dll:

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Код:

[Setup]
WindowVisible=yes
WindowResizable=no
WindowShowCaption=no

[Files]
Source: C:\isxbb.dll; DestDir: {tmp}; Flags: dontcopy
Source: C:\1.jpg; DestDir: {tmp}; Flags: dontcopy

[_Code]
const
  BACKGROUND=6;

function isxbb_AddImage(Image: PChar; Flags: Cardinal): Integer;
external 'isxbb_AddImage@files:isxbb.dll stdcall';

function isxbb_Init(hWnd: Integer): Integer;
external 'isxbb_Init@files:isxbb.dll stdcall';

procedure InitializeWizard();
begin
    ExtractTemporaryFile('1.jpg');
    isxbb_AddImage(ExpandConstant('{tmp}')+'\1.jpg',BACKGROUND);
    isxbb_Init(StrToInt(ExpandConstant('{hwnd}')));
end;