Re: Key handling problems

[Perriman <chuchiperriman gmail com>]

Thank you very much

I have a question: 
        Why I check GDK_MOD1_MASK and not another mask?

I want the control+j but not the lock caps+control+j neither
num lock+control+j etc. 

Regards, 
        Perriman

El Wed, 17 Sep 2008 21:50:08 -0400 (EDT)
Allin Cottrell <cottrell wfu edu> escribiÃ:

> On Thu, 18 Sep 2008, Perriman wrote:
>
> >     I'm trying to check if a user press some keys. I want to
> > check If the user press control+j. I'm having problems with it. I
> > paste my code:
> >
> > guint key = self->priv->key;
> >             
> > if ((event->state & self->priv->mod) == self->priv->mod &&
> >     event->keyval == key) 
> > {
> >     xxxxxxxxx
> > }
> >
> > Currently this code do:
> >
> > 1.- If the user has NumLk enabled works fine
> > 2.- If the user has lock caps enable it doesn't work because the j
> > is not j is J (upper)
> > 3.- The control check works fine
> > 4.- If I press contro+alt+j works (It may fail because I want to
> > check control+j not control+alt+j)
> > 5.- If I press contro+shift+j doesn't work because the j is not J
> > but the state check sais true
> >
> > I have tried 1000 ways to do it, I have see a lot of code but I have
> > not luck
> >
> > Can you help me? I'm desperated :(
>
> If you're attaching to the "key_press_event" on some widget, you 
> can do something like this in your callback:
>
> gboolean
> catch_ctrl_j (GtkWidget *w, GdkEventKey *key, gpointer p)
> {
>     GdkModifierType mods;
>
>     gdk_window_get_pointer(w->window, NULL, NULL, &mods);
>     
>     /* make the j/J case insensitive? */
>     if (gdk_keyval_to_upper(key->keyval) == GDK_J) {
>         if (mods & GDK_CONTROL_MASK) {
>           printf("Got ctrl-j");
>           if (mods & GDK_MOD1_MASK) {
>               printf("Got ctrl-alt-j");
>             }
>       }
>     }
>     
>     return FALSE;
> }
>
> If you'e handling the keystroke and don't want the default handler 
> invoked, then return TRUE instead.
>
> --
> Allin Cottrell
> Department of Economics
> Wake Forest University, NC