How to embed SD2 window to panel

[Imants]

I am using Ubuntu 24.04 LTS and I want to embed SDL2 window inside panel. I found this code example
 
GtkWidget := PGtkWidget(panel1.handle);
Handle := Pointer(GDK_WINDOW_XWINDOW(GtkWidget^.window));   
SDLWindow := SDL_CreateWindowFrom(Handle);   

But when I run code I get this error:

The program 'application1' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 192 error_code 3 request_code 20 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

[MarkMLl]

The program 'application1' received an X Window System error.

This is not my area of expertise and I might not be able to help further, but... are you sure Ubuntu is actually using X11?

MarkMLl

[Imants]

Apparently yes still uses because my code started to work when I changed panel to TOpenGLControl. But now I have different problem. It draws only part of my scene