RE: dialog widget problem

[Matt Eisemann <meisemann dsrnet com>]

Below should show my scoping of how I do everything.  It must be a scoping 
issue.  Basically what I do is in two different functions I implement the 
following code to display the dialog under a specific condition.

void some_func(void)
{
  ....
  if(tasks->dead_tasks == TRUE)
  {
    gtk_widge_show_all(tasks->dialog_win);
    tasks->dead_tasks = FALSE;
  }
}

The above is seen in two different functions.
In main() I have the code

int main(int argc, char *argv[])
{
  dialog_win = gtk_dialog_new();
  dialog_label = gtk_label_new("WARNING.  There are DEAD tasks running. ");
  dialog_ok = gtk_button_new_with_label("OK");
  gtk_window_set_title(GTK_WINDOW(dialog_win), "dead tasks");
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog_win)->vbox),dialog_label,
                               FALSE,FALSE,NO_PADDING);
 
 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog_win)->action_area),dialog_ok,
                               FALSE, FALSE,NO_PADDING);
  /* later in main  this might be problem.  copy ptr of widget to point to 
dialog_win.  Both are defined as GtkWidget *dialog_win.  */
  tasks->dialog_win = dialog_win;

  /* callbacks then follow after the above */

  ....
   gtk_signal_connect_object(GTK_OBJECT(dialog_ok),"clicked",
 
                                         GTK_SIGNAL_FUNC(gtk_widget_hide  
),GTK_OBJECT(dialog_win));
  gtk_signal_connect(GTK_OBJECT(tasks->dialog_win),"delete_event",
                              GTK_SIGNAL_FUNC(ok_delete_handler),NULL);

  }

  The above signal does not make a difference, I get a core dump whether I 
use GTK_OBJECT(tasks->dialog_win) or GTK_OBJECT(dialog_win).  The 
utics_ok_delete_handler function

gboolean ok_delete_handler(GtkWidget *widget, GdkEvent *event,
                                                  gpointer user_data)
{
  char who[]="ok_delete_handler";

  printf("closing: %s \n",who);
  gtk_widget_hide(widget);
  return(TRUE);
}

Hopefully the above should give the idea of the scoping I am using.  The 
only problem I might see is the fact I make a copy of the ptr to the widget 
but it should be displaying the same widget with just a different pointer 
unless I am wrong.


-----Original Message-----
From:	Dugas, Alan [SMTP:alan dugas analog com]
Sent:	Monday, October 30, 2000 6:51 PM
To:	gtk-list gnome org; Matt Eisemann
Subject:	RE: dialog widget problem

The code looks OK to me, however, you may be running into a scoping issue
with dialog_win depending on where you use gtk_signal_connect(). 
 Otherwise,
I think I'd need to see more of your code to figure out what's going on.




				-- Stupid Genius
> ----------
> From: 	Matt Eisemann[SMTP:meisemann dsrnet com]
> Sent: 	Monday, October 30, 2000 6:23 PM
> To: 	'Dugas, Alan'; gtk-list gnome org
> Subject: 	RE: dialog widget problem
>
> You were right.  For some reason it needed gtk_signal_connect_object.  If
> I
> want to also have a window delete handler in case they close the window
> via
> window mgr does the following look right given the variable names I have
> used already.
>
> gtk_signal_connect(GTK_OBJECT(dialog_win),"delete_event",
>
>
> GTK_SIGNAL_FUNC(utics_ok_delete_handler),NULL);
>
> gboolean utics_ok_delete_handler(GtkWidget *widget, GdkEvent *event,
>                                                   gpointer user_data)
> {
>   gtk_widget_hide(widget);
>   return(TRUE);
> }
>
> Actually, i just tried it and I got a core dump.  Anything look wrong
> above.  Thanks ahead of time for your help.
>
> Matt
>
>
>
> -----Original Message-----
> From:	Dugas, Alan [SMTP:alan dugas analog com]
> Sent:	Monday, October 30, 2000 5:58 PM
> To:	gtk-list gnome org; Matt Eisemann
> Subject:	RE: dialog widget problem
>
> Just a thought...  It appears the problem has to do with
> gtk_signal_connect()
> passing it's first argument to gtk_widget_hide() whereas I think your
> trying to
> pass the last argument instead.  Try using gtk_signal_connect_object(), 
it
>
> will
> change the order of the argments passed to the callback function so that
> the
> last argument to gtk_signal_connect_object() is passed as the first
> argument to
> gtk_widget_hide() instead.
>
>
>
> 				-- Stupid Genius
>
> > ----------
> > From: 	Matt Eisemann[SMTP:meisemann dsrnet com]
> > Sent: 	Monday, October 30, 2000 5:09 PM
> > To: 	gtk-list gnome org
> > Subject: 	dialog widget problem
> >
> > Currently I am creating an application, but there is something wrong
> with
> > the callback that hides the widget or something is wrong in my logic.
>  Here
> > is a bit of code below which so should give some idea of what I am
> doing.
> >  The main window calls a dialog box when a certain flag is set.  I want 
> the
> > user to be able to push the "OK" button and hide the dialog window and
> > reset the flag back to FALSE.  I hopefully left out extraneous
> information
> > and code.
> >
> > void some_function(... )
> > {
> >
> >   .....
> >
> >
> >
> >   if(tasks->dead_tasks == TRUE)
> >   {
> >     gtk_widget_show_all(tasks->dialog_win);
> >     tasks->dead_tasks = FALSE;
> >   }
> > }
> >
> >
> >
> > int main(INT argc, CHAR *argv[])
> > {
> >   ...
> >   dialog_win = gtk_dialog_new();
> >   dialog_label = gtk_label_new("WARNING.  There is something wrong. 
 ");
> >   dialog_ok = gtk_button_new_with_label("OK");
> >   gtk_window_set_title(GTK_WINDOW(dialog_win),"dead tasks");
> >
> > 
 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog_win)->vbox),dialog_label,F
>
> > ALSE,FALSE,NO_PADDING);
> > 
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog_win)->action_area),dialog
>
> > _ok, FALSE,FALSE, NO_PADDING);
> >
> >   gtk_signal_connect(GTK_OBJECT(dialog_ok),"clicked",
> >
> > 
                              GTK_SIGNAL_FUNC(gtk_widget_hide),GTK_OBJEC
>
> > T(dialog_win));
> >  }
> >   The code works somewthat above but the problem is that the OK button
> > disappears and not the whole window.
> >
> >
> > _______________________________________________
> > gtk-list mailing list
> > gtk-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtk-list
> >
>
>
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