Problem with gtk_window_set_geometry_hints and vbox

["Guillaume Duhamel" <guillaume duhamel gmail com>]

Hi,

I'm writing a gtk interface for my Sega Saturn emulator. It's using a
GtkDrawingArea and GtkGlExt to display an OpenGL window. I want the
drawing area size to respect some constraint to match the Saturn
resolution. It looks like gtk_window_set_geometry_hints does what I
need but I have some issues when using it : my drawing area is packed
in a vbox with the menu and when I ask a size for the drawing area, I
got that size + the size of the menu. For instance, if I want a
drawing area size of 320 and the size of the menu is 65, I got a size
of 385 for the drawing area.

What am I doing wrong? I'm including some example code:

#include <gtk/gtk.h>

gboolean resize (GtkWidget * w, GdkEventConfigure * e, gpointer d) {
       g_print("got: %d x %d\n", e->width, e->height);
}

int main(int argc, char ** argv) {
       GtkWidget * window, * box, * menu, * area;
       GdkGeometry hints;

       gtk_init(&argc, &argv);

       window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

       box = gtk_vbox_new(FALSE, 0);
       gtk_container_add(GTK_CONTAINER(window), box);

       menu = gtk_menu_bar_new();
       gtk_container_add(GTK_CONTAINER(menu),
gtk_menu_item_new_with_mnemonic("Dummy"));
       gtk_box_pack_start(GTK_BOX(box), menu, FALSE, FALSE, 0);

       area = gtk_drawing_area_new();
       gtk_box_pack_start(GTK_BOX(box), area, TRUE, TRUE, 0);
       g_signal_connect(GTK_OBJECT(area), "configure_event",
GTK_SIGNAL_FUNC(resize), 0);

       hints.min_width = 320;
       hints.min_height = 200;
       g_print("asking: %d x %d\n", hints.min_width, hints.min_height);

       gtk_window_set_geometry_hints(GTK_WINDOW(window), area,
&hints, GDK_HINT_MIN_SIZE);

       gtk_widget_show_all(window);

       gtk_main();
}

Guillaume