mdw@git.distorted.org.uk Git - mgLib/blob - cancel.c

   1 /* -*-c-*-
   2  *
   3  * $Id: cancel.c,v 1.3 1999/05/05 18:52:45 mdw Exp $
   4  *
   5  * Handle Escape keypresses, directing them to cancel buttons
   6  *
   7  * (c) 1998 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of the mgLib GTK utilities library.
  13  *
  14  * mgLib is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * mgLib is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with mgLib; if not, write to the Free Software
  26  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: cancel.c,v $
  32  * Revision 1.3  1999/05/05 18:52:45  mdw
  33  * Change licensing conditions to LGPL.
  34  *
  35  * Revision 1.2  1999/03/25 23:36:07  mdw
  36  * Compile to nothing in absence of GTK, for the benefit of parent packages
  37  * which contain non-GTK-dependent parts.
  38  *
  39  * Revision 1.1  1998/12/11 09:44:21  mdw
  40  * Initial version.
  41  *
  42  */
  43
  44 #ifdef HAVE_GTK
  45
  46 /*----- Header files ------------------------------------------------------*/
  47
  48 #include <gtk/gtk.h>
  49 #include <gdk/gdkkeysyms.h>
  50
  51 #include "cancel.h"
  52
  53 /*----- Main code ---------------------------------------------------------*/
  54
  55 /* --- @cancel@ --- *
  56  *
  57  * Arguments:   @GtkWindow *win@ = window in which this is happening
  58  *              @GtkWidget *w@ = widget to activate, or null
  59  *
  60  * Returns:     ---
  61  *
  62  * Use:         Sets up @win@ so that a press of `escape' will activate
  63  *              @w@ or destroy @win@.
  64  */
  65
  66 static gboolean cancel_press(GtkWidget *w, GdkEventKey *ev, gpointer *p)
  67 {
  68   if (ev->keyval == GDK_Escape) {
  69     if (p)
  70       gtk_widget_activate(GTK_WIDGET(p));
  71     else
  72       gtk_object_destroy(GTK_OBJECT(w));
  73     return (1);
  74   }
  75   return (0);
  76 }
  77
  78 void cancel(GtkWindow *win, GtkWidget *w)
  79 {
  80   gtk_signal_connect(GTK_OBJECT(win), "key_press_event",
  81                      GTK_SIGNAL_FUNC(cancel_press), w);
  82 }
  83
  84 /*----- That's all, folks -------------------------------------------------*/
  85
  86 #else
  87   int mgLib_cancel = 0;
  88 #endif