The correct way to gtk_draw?

[Boris_Shingarov OTI COM]

Hi,

I am trying to gtk_draw_check on a pixmap.  Like this:

    GtkToggleButton *toggle;
    GtkStyle *style;
    GdkPixmap *pixmap;    

toggle = gtk_toggle_button_new();
style = GTK_WIDGET(toggle)->style;
pixmap = gdk_pixmap_new (0, 12,12, 24);
gtk_draw_check (style,
                pixmap,
                GTK_STATE_NORMAL,
                GTK_SHADOW_NONE,
                0,0,
                12,12);

This dumps warnings about GC being NULL.  The weird thing is that it only happens on some machines and with only some theme engines.
I also tried using gtk_paint_box, to the same outcome.
What a I doing wrong?

Boris