Re: Problems with 1.2.9 gdk_rgb [was Re: Gtk (cvs HEAD) -> gdk_pixbuf does'nt compile correcly.]
- From: Chuck Mason <chuckjr unbounded com>
- To: Chuck Mason <chuckjr unbounded com>
- Cc: gtk-devel-list gtk org
- Subject: Re: Problems with 1.2.9 gdk_rgb [was Re: Gtk (cvs HEAD) -> gdk_pixbuf does'nt compile correcly.]
- Date: 27 Mar 2001 07:18:22 -0500
On 27 Mar 2001 07:11:17 -0500, Chuck Mason wrote:
> I've been forgetting to post this, and it's doing me no good just
> knowing this fact so I might as well tell everyone.
>
> A couple days ago I was writing a simple program: I created the
> interface in glade, and the main window had a menu, a GtkDrawingArea and
> that was it. I added a expose_event to the DrawingArea and used this
> code in that function:
>
> void
> on_my_drawingarea_expose_event (GtkDrawingArea *da, gpointer data)
> {
>
> guchar *buffer = (guchar *) g_malloc (da->allocation.width *
> da->allocation.height * 3);
>
> memset ((void *)buffer, 0x7f, da->allocation.width *
> da->allocation.height * 3);
>
> gdk_rgb_draw_image (da->window, da->style->fg_gc[GTK_STATE_NORMAL],
> 0, 0, da->allocation.width, da->allocation.width,
Sorry, da->allocation.width, da->allocation.height is the used line
here, It was mistyped in this email only.
> GDK_RGB_DITHER_NORMAL, buffer,
> da->allocation.width * 3);
>
> g_free (buffer);
>
> return;
>
> }
>
>
> .. And it segfaulted. This could mean (at first glance) a problem with
> my code. I spent HOURS trying to determine what was wrong, so I asked a
> friend to try the program (who was using the same version Gtk+ etc. at
> that time), and it worked! Why?
>
> Two days ago, I got bored with my Gnome settings so I got a new theme
> for my sawfish manager and gtk+ interface, and then decided to go back
> to my program to see if I could figure out what was wrong. It ran. What
> a surprise. I was confused at first, but I finally decided I would
> point my finger at the gdk theme engine (Not sure what you gtk-dev'ers
> call it officially).
>
> So, now this means one of 2 things: 1) I wrote some bad code, or 2)
> something is seriously broken in the gdk engine.
>
> I would like some feedback if anyone has anything to say about this.
>
> Thanks,
> Chuck
>
>
>
>
> _______________________________________________
> gtk-devel-list mailing list
> gtk-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-devel-list
>
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