static GtkWidget *
get_desktop_manager_selection (GdkScreen *screen)
{
char selection_name[32];
GdkAtom selection_atom;
Window selection_owner;
GdkDisplay *display;
GtkWidget *selection_widget;
g_snprintf (selection_name, sizeof (selection_name),
"_NET_DESKTOP_MANAGER_S%d", gdk_screen_get_number (screen));
selection_atom = gdk_atom_intern (selection_name, FALSE);
display = gdk_screen_get_display (screen);
selection_owner = XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display),
gdk_x11_atom_to_xatom_for_display (display,
selection_atom));
if (selection_owner != None) {
return NULL;
}
selection_widget = gtk_invisible_new_for_screen (screen);
/* We need this for gdk_x11_get_server_time() */
gtk_widget_add_events (selection_widget, GDK_PROPERTY_CHANGE_MASK);
if (gtk_selection_owner_set_for_display (display,
selection_widget,
selection_atom,
gdk_x11_get_server_time (gtk_widget_get_window (selection_widget)))) {
g_signal_connect (selection_widget, "selection-get",
G_CALLBACK (selection_get_cb), NULL);
return selection_widget;
}
gtk_widget_destroy (selection_widget);
return NULL;
}
static VALUE
gtkdrag_selection_owner_set(int argc, VALUE *argv, VALUE self)
{
gboolean ret;
if (argc == 3){
VALUE widget, selection, time;
rb_scan_args(argc, argv, "30", &widget, &selection, &time);
ret = gtk_selection_owner_set(RVAL2WIDGET(widget),
RVAL2ATOM(selection), NUM2INT(time));
} else {
#if GTK_CHECK_VERSION(2,2,0)
VALUE display, widget, selection, time;
rb_scan_args(argc, argv, "40", &display, &widget, &selection, &time);
ret = gtk_selection_owner_set_for_display(GDK_DISPLAY_OBJECT(RVAL2GOBJ(display)),
RVAL2WIDGET(widget),
RVAL2ATOM(selection), NUM2INT(time));
#else
rb_raise(rb_eArgError, "Wrong number of arguments: %d", argc);
#endif
}
return CBOOL2RVAL(ret);
}
