GtkPixmap / Imlib memory leak problem

[Dave Swegen <dave recursive prestel co uk>]

I'm having a problem with a hideous memory leak. In my program I use imlib
to load an image, then convert the image data to a pixmap, which in turn is
converted to a GtkPixmap (using gtk_pixmap_new()).

This all works fine. The problem arises whenever I wish to replace the
gtkpixmap with a newly generated pixmap. It would seem that the GdkPixmap
info in the gtkpixmap struct is just cut loose every time I update, and
I've been completly unable to figure out how to free the pixmap.

The order of the program is something like this:

load_image() (using gdk_imlib)

update_and_render image()

display_pixmap()

I then have a callback function, which is run whnever the mouse is clicked.

The callback has the following sequence:

flood_fill_area()

update_and_render_image() <- Program size increases 3Mb every time called

display_pixmap()

The updating function looks like this:

void update_map(world *worldobj, gui_info * gui)
{
        GdkPixmap *pm;

/* worldobj->map is a GdkImlibImage */
        gdk_imlib_changed_image(worldobj->map);
        gdk_imlib_render(worldobj->map,
                        worldobj->map->rgb_width,
                        worldobj->map->rgb_height);
        pm = gdk_imlib_move_image(worldobj->map);
/* I suspect the old gdkpm is cut loose at the next line */
        gui->map_pm = gtk_pixmap_new(pm, NULL);
        worldobj->map_h = worldobj->map->rgb_height;
        worldobj->map_w = worldobj->map->rgb_width;
        gtk_fixed_put(GTK_FIXED(gui->fbox), gui->map_pm, 0, 0);
        gtk_widget_show(gui->map_pm);
}

According to the imlib docs gdk_imlib_free_pixmap should be called on all
pixmaps created by imlib, but I have been unable to work out how to access
the gdkpixmap which is held by the GtkPixmap (gui->map_pm, which is
actually a GtkWidget).

Calling gtk_destroy_widget(gui->map_pm) either has no effect, or causes a
segfault.

Anyway, I will appreciate any clarification on the matter.

Cheers
    Dave

-- 
         Dave Swegen           | Debian 2.1 on Linux i386 2.2.3
<dave@recursive.prestel.co.uk> | PGP key available on request
      <dsw@debian.org>         | Linux: The Choice of a GNU Generation
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