my $video_panel=Wx::Panel->new($i_main_menu, wxID_ANY, wxDefaultPosition, [800,600],);

(... lots of code goes here and the full executable version is here: 
##</code><code>##

)

my $g_window = $video_panel->GetHandle;
$message->src->set_window_handle($g_window);

##</code><code>##

    vir tual WXWidget wxWindow::GetHandle()  const

        Returns the platform-specific handle of the physical window.
        Cast it to an appropriate handle, such as HWND for Windows,
        Widget for Motif or GtkWidget for GTK.
        wxPerl Note: This method will return an integer in wxPerl.

##</code><code>##

The program 'GStreamer_test_6.pl' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
   (Details: serial 17 error_code 3 request_code 3 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.)