Re: [gtk-list] Re: Question about GtkTree

["Achint Sandhu" <sandhu nortelnetworks com>]

Thanks for the reply David. I tried this before and the problem I run
into is that this event only works for items of the "root" tree. The
question is whether I need to walk through all the subtree's and set the
signal for them as well....

Cheers,
Achint

David Helder wrote:
> 
> I think you're on the right track - use the button_press_event.
> 
> Here's some sample code:
> 
> /* Connect button_press_event to tree and have it call tree_button_press
>  */
>   gtk_signal_connect (GTK_OBJECT(tree), "button_press_event",
>                       GTK_SIGNAL_FUNC(tree_button_press), NULL);
> 
> static gint
> tree_button_press (GtkWidget *widget, GdkEventButton *event, void *data)
> {
>   if (debug_level >= 3)
>     g_print ("tree_button_press\n");
> 
>   /* if event->type == GDK_2BUTTON_PRESS, it's a double click */
> 
>   /* here's some more sample code related to CTree's, which you
>         might want to switch to.  */
>   if (event->button == 3)
>     {
>       /* Handle someone clicking the 3rd mouse button */
> 
>       /* Get the selection information */
>       gtk_clist_get_selection_info (GTK_CLIST(tree), event->x, event->y,
>                                     &row, &column);
> 
>       /* Select the clicked row */
>       if (row > -1)
>         gtk_clist_select_row (GTK_CLIST(tree), row, 0);
> 
>       /* Down here I display a popup menu */
>         [...]
> 
>       return TRUE;
>     }
>   return FALSE;
> }
> 
> On Tue, 26 Jan 1999, Achint Sandhu wrote:
> 
> > Hi,
> >
> >       Another newbie question. I am trying to run a callback if someone
> > double clicks an item in a GtkTree. My original declaration for the
> > callback was:
> > void selectionChangedInTree(GtkWidget *theTree, gpointer object);
> >       I changed this to
> > void selectionChangedInTree(GtkWidget *theTree, GdkEvent *event,
> >                               gpointer object);
> >       and tried to look at the <event> to figure out whether the selection
> > was a single click or a double click. I was using the following code to
> > connect the signal:
> >   gtk_signal_connect(GTK_OBJECT(aTree), "selection_changed",
> >                    GTK_SIGNAL_FUNC(selectionChangedInTree),
> >                    (gpointer) this);
> >       This approach did not work, so I started looking at the different
> > events I could use. I looked into the "button_press_event", but did not
> > get very far with that.
> >
> >       Any help/sample code would be greatly appreciated ...
> >
> > Cheers,
> > Achint
> >
> > --
> > Achint Sandhu
> > Nortel Networks
> >
> > It must be remembered that there is nothing more difficult to plan, more
> > doubtful of success, nor more dangerous to manage, than the creation of
> > a
> > new system.  For the initiator has the enmity of all who would profit by
> > the preservation of the old institutions and merely lukewarm defenders
> > in
> > those who would gain by the new ones.
> >                     -- Machiavelli
> >
> > --
> > To unsubscribe: mail -s unsubscribe gtk-list-request@redhat.com < /dev/null
> >
> 
>       __          _    __
>   ___/ /__ __  __(_)__/ /  David Helder - University of Michigan
>  / _  / _ `/ |/ / / _  /   dhelder@umich.edu
>  \_,_/\_,_/|___/_/\_,_/    http://www.eecs.umich.edu/~dhelder
> 
> --
> To unsubscribe: mail -s unsubscribe gtk-list-request@redhat.com < /dev/null

-- 
Achint Sandhu
Nortel Networks

It must be remembered that there is nothing more difficult to plan, more
doubtful of success, nor more dangerous to manage, than the creation of
a new system.  For the initiator has the enmity of all who would profit 
by the preservation of the old institutions and merely lukewarm
defenders
in those who would gain by the new ones.
                    -- Machiavelli