title: Skinned Inno Setup - Rtf Text Scroll Bar Issue
body: <p>i'm using skinned inno setup installer using this code</p>
  <pre><code>[Files]
  ; Importing ISSkin DLLs :
  Source: ISSkin.dll; DestDir: {app}; Flags: dontcopy
  Source: Styles\Word_Style2010.cjstyles; DestDir: {tmp}; Flags: dontcopy
  
  [Code]
  // Importing LoadSkin API from ISSkin.DLL
  procedure LoadSkin(lpszPath: String; lpszIniFileName: String);
  external 'LoadSkin@files:isskin.dll stdcall';
  
  // Importing UnloadSkin API from ISSkin.DLL
  procedure UnloadSkin();
  external 'UnloadSkin@files:isskin.dll stdcall';
  
  // Importing ShowWindow Windows API from User32.DLL
  function ShowWindow(hWnd: Integer; uType: Integer): Integer;
  external 'ShowWindow@user32.dll stdcall';
  
  function InitializeSetup(): Boolean;
  begin
      ExtractTemporaryFile('VZ_Green.cjstyles');
      LoadSkin(ExpandConstant('{tmp}\VZ_Green.cjstyles'), '');
      Result := True;
  end;
  </code></pre>
  <p>my problem is that the scroll bar isn't working !! though it was working when there was no skin.. is it possible to fix the issue ? i can't click on it and even sometimes it disappears ! sometimes it takes theme from my setup's background but still doesn't work like if it doesn't exist!! i already made researches about it but didn't found a solution yet, maybe it's a bug in cj styles? if yes, can you please guide me to draw a working scroll bar for my cj_style ? i can modify my cj style btw using some tools..
  i tried many different styles, maybe not even something possible ?</p>
  <p><a href="https://i.stack.imgur.com/OA9No.png" rel="nofollow noreferrer">this is a screenshot</a></p>
  <p>UPDATE : I've found the solution for the issue.. just use a modified version of inno setup and you'r all done :)</p>