Enable/Disable GTk CheckButton

Claus · 11-28-2003, 09:07 PM

How can i enable/disable a GtkCheckButton ??

i was trying with this

Code:

 do{
                        switch(acl_rights[count]){
                                case 'l':
                                        gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM(checkbutton_l), TRUE);
                                        break;
...

But i get this message when i run and the program goes through that code...

Code:

 (gyrus:20019): GLib-GObject-WARNING **: invalid cast from `GtkCheckButton' to `GtkCheckMenuItem'
 
(gyrus:20019): Gtk-CRITICAL **: file gtkcheckmenuitem.c: line 205 (gtk_check_menu_item_set_active): assertion `GTK_IS_CHECK_MENU_ITEM (check_menu_item)' failed

and off course, the checkbutton dont get activated...

So anyone can tell me how it's really supposed to be done??? Thank you..

mhearn · 11-30-2003, 08:43 AM

Try:

gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(checkbutton_l));

You see, GtkCheckMenuItem is a different class to GtkCheckButton (one is a tick box, one is a menu item), and you are attempting to typecast between them which is invalid, hence the assertions. GtkCheckButton doesn't have its own way to toggle on and off, but it inherits from GtkToggleButton which does, hence you need gtk_toggle_button_* stuff.

Hope that helps

Claus · 12-01-2003, 04:44 AM

thank you.