Re: [AD] Re: [AL] Problems: Grabber and windowing

[Eric Botcazou <ebotcazou@xxxxxxxxxx>]

> At request from Hein Zelle, I installed wmaker and did a short test on
> my system:
> Under wmaker, demo shows the "...Can not grab mouse." error message (but
> not the test program). Both plain X and Gnome2 don't exhibit any problem
> (using CVS with the 2 xwin.diff applied).

My bad... the first xwin.diff patch is bogus; could you try with the second 
one only (attached again to this message) ?

> So this definitely has to do with the window manager, and with the
> difference between test and demo.

The only significant difference is that test.c makes 3 attempts at setting the 
graphics mode, while demo.c makes only one. The patch instructs the driver to 
make 2 attempts, which seems to be enough on my system. If it's not the case 
on yours, could you try to instruct it to make 3 attempts too ?

-- 
Eric Botcazou

--- /home/eric/cvs/allegro/src/x/xwin.c	Fri Nov 15 12:07:49 2002
+++ allegro/src/x/xwin.c	Thu Jan 16 19:09:59 2003
@@ -763,8 +763,15 @@
    BITMAP *bmp;
    XLOCK();
    bmp = _xwin_private_create_screen(drv, w, h, vw, vh, depth, fullscreen);
-   if (bmp == 0)
+   if (bmp == 0) {
       _xwin_private_destroy_screen();
+      /* Work around a weird bug probably caused by KWM.  */
+      if (fullscreen) {
+	 bmp = _xwin_private_create_screen(drv, w, h, vw, vh, depth, fullscreen);
+	 if (bmp == 0)
+	    _xwin_private_destroy_screen();
+      }
+   }
    XUNLOCK();
    return bmp;
 }