Re: gdk_window_foreign_new returns NULL

["Brian J. Tarricone" <bjt23 cornell edu>]

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jacktm wrote:
> jacktm wrote:
>
>>I'm working on a big project and I have to use
>>gdk_window_foreign_new function in it. It doesn't work
>>and always returns NULL. I've checked if I can use
>>it in a small application - just to see how does it work,
>>but unfortunately it doesn't work for me.  I attached
>>as simple test as I could do (just a tutorial program
>>+ call to gdk_window_foreign_new). What's wrong?
>>What should I do to make it work?
[snip]
>       // Create the window
>       Window w = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 
> 				     200, 100, 0, blackColor, blackColor);
>       gdk_win = gdk_window_foreign_new((guint32)w);
[...]
>       // "Map" the window (that is, make it appear on the screen)
>       XMapWindow(dpy, w);
[...]
>       // Wait for the MapNotify event
>       for(;;) {
> 	    XEvent e;
> 	    XNextEvent(dpy, &e);
> 	    if (e.type == MapNotify)
> 		  break;
>       }

IIRC, you need to map the window and wait for the window to actually get
mapped *before* calling gdk_window_foreign_new().

	-brian
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