RTL Windows

RTL means "Right To Left", and it is used to make the windows compatible with the Arabic settings. To make a Form RTL use the following options when createing the Form:

WS_EX_RTLREADING

to make the window right to left reading order.

WS_EX_LEFTSCROLLBAR

to make the scroll bar in the left.

WS_EX_RIGHT

to give right alignmenty for the window.

How to use it?

procedure CreateParams(var Params: TCreateParams); override;

procedure TForm1.CreateParams(var Params: TCreateParams);
begin
  inherited CreateParams(Params);       { call the inherited first }
  with Params do
       ExStyle := ExStyle or WS_EX_RTLREADING 
                or WS_EX_LEFTSCROLLBAR or WS_EX_RIGHT ;
end;