Re: #define as callback data

[Deepu T Roy <deepu_roy yahoo com>]

It would compile but would give a warning. Instead I suggest you use the macros
GINT_TO_POINTER( ) and GPOINTER_TO_INT( )

deepu


On Tue, 26 Jun 2001, Black wrote:
> Actually (gpointer)OFF should work, it is what I am using at the moment
>
> I have a line like this:
>
>  gtk_signal_connect (GTK_OBJECT (adj), "value_changed",
>                     GTK_SIGNAL_FUNC (focus_change),(gpointer)HEIGHT);
>
> where HEIGHT is a #define <something>
> Then, focus_change looks like:
>
>
>
> void focus_change( GtkWidget *widget,gpointer *data ){
>   focus = (int)data;
> }
>
>
> It works fine for me.
>
> -christopher
>
>
>
>
>
> On Tue, 26 Jun 2001, Peter Wurmsdobler wrote:
>
> > Hello,
> >
> > Maybe this quesion has been posed already, but I am still 
> > looking for a better solution like this:
> >
> > ----begin common.h-------
> >
> > #define OFF 0
> >
> > ----end common.h-------
> >
> > ----begin xmcm.c-------
> > #include "common.h"
> >
> > static int off_cb = OFF;
> > gtk_signal_connect( 
> >    GTK_OBJECT( mm_off_radiobutton ), "clicked",
> >    GTK_SIGNAL_FUNC( mm_state_radiobutton_clicked ), &off_cb );
> >
> > ----end xmcm.c---------
> >
> > -----begin mcm.c-------
> >
> > void mm_state_radiobutton_clicked( GtkButton *button,
> >     gpointer data )
> >     {
> >     if ( GTK_TOGGLE_BUTTON(button)->active )
> >         shm->mm_state = *((int *)(data));
> >     }
> >
> > ----end mcm.c-------
> >
> > What I would actually look for is to pass OFF directly to
> > gtk_signal_connect but (gpointer)(OFF) does not work
> >
> > thanks for any hints,
> > peterw
> > - 
> > Dr. Peter Wurmsdobler
> >
> >       CTM - Centre de Transfert des Microtechniques
> > 39, av. de l'Observatoire, BP-1445, 25007 Besancon CEDEX 3
> > TELEPHONE: +33 3 81 47 70 20  TELECOPIE: +33 3 81 47 70 21
> >          E-mail: peter wurmsdobler ctm-france com
> >
> >                   Ceterum censeo MIRCOSOFTem esse delendam.
> >
> > _______________________________________________
> > gtk-app-devel-list mailing list
> > gtk-app-devel-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
>
>
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