[XForms] drawing into a foreign window

[Patrick]

Hi Guys

I am doing something weird.

I want to mix ncurses and xforms.

I can obtain the window ID that the ncurses program is running in. I 
wanted to override the FL_FORM struct so that the window ID is the 
terminal window's ID.

I tracked Window in the FL_FORMS struct on line 896 to window(lowercase) 
and then this back to line 96 in X.h

Window is a typedef of XID on line 66 of X.h

XID is type unsigned long.

I tried to hack arrows.c from demos like this:


int
main( int    argc,
      char * argv[ ] )
{
    FL_FORM *form;
    FL_OBJECT *obj;

    fl_initialize( &argc, argv, "FormDemo", 0, 0 );

    form = fl_bgn_form( FL_FLAT_BOX, 400, 400 );
    form->window = 83886089;
printf("first time, window is is %lu \n", form->window) ;

    obj = fl_add_button( FL_NORMAL_BUTTON, 50, 250, 100, 100, "@1" );
    fl_set_object_lcolor( obj, FL_BLUE );

    obj = fl_add_button( FL_NORMAL_BUTTON, 150, 150, 100, 100, "@square" );
    fl_set_object_lcolor( obj, FL_GREEN );

    fl_end_form( );

    fl_show_form( form, FL_PLACE_ASPECT, FL_TRANSIENT, "Buttons" );

    while ( fl_do_forms( ) != obj )
        /* empty */ ;


printf("second time, window is is %lu \n", form->window) ;

    fl_finish( );
    return 0;
}




The window ID in the second printf statement does not match the one I 
assigned to it but the first one does.

Am I close? Is there a better way to do this?

Thanks-Patrick