[633] in The GTK GIMP ToolKit mailing list archive
[gtk-list] gtk_get_current_event() (gtk+970606)
daemon@ATHENA.MIT.EDU (Hideki Fujimoto)
Sun Aug 3 03:11:23 1997
To: gtk-list@redhat.com
From: hideki70@osk2.threewebnet.or.jp (Hideki Fujimoto)
Reply-To: hideki70@osk2.threewebnet.or.jp
Date: Fri, 01 Aug 1997 21:28:07 -0400
Resent-From: gtk-list@redhat.com
Hi!
I have encountered a strange behavior of gtk_get_current_event()
in gtkmain.c.
------------------------ test0.c ----------------------------
#include <gtk/gtk.h>
void
hello (void)
{
g_print ("Hello World\n");
gtk_exit (0);
}
/* key handler */
void
key (void)
{
GdkEvent *event;
GdkEventKey kevent;
gchar ch;
gtk_get_current_event(event);
kevent = event->key;
ch = kevent.keyval;
g_print("input char: %c\n", ch);
}
int
main (int argc, char *argv[])
{
GtkWidget *window;
GtkWidget *button;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* add "key_press_event" */
gtk_signal_connect (GTK_OBJECT (window), "key_press_event",
GTK_SIGNAL_FUNC (key), NULL);
gtk_container_border_width (GTK_CONTAINER (window), 10);
button = gtk_button_new_with_label ("Hello World");
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (hello), NULL);
gtk_container_add (GTK_CONTAINER (window), button);
gtk_widget_show (button);
gtk_widget_show (window);
gtk_main ();
return 0;
}
---------------------------------------------------------------
compile test0.c and run test0 like bellow.
$ ./test0 &
$ Input charactor: d <- push key "d"
** ERROR **: sigsegv caught
To avoid ocurring an err of sigsegv, I modify gtk_get_current_event()
in gtkmain.c to bellow. Also, gtkmain.h too.
----------------------- gtkmain.c ------------------------------
GdkEvent
gtk_get_current_event ()
{
return current_event;
}
----------------------------------------------------------------
And modify test0.c to test1.c.
------------------- key() in test1.c ---------------------------
/* key handler */
void
key (void)
{
GdkEvent event;
GdkEventKey kevent;
gchar ch;
event = gtk_get_current_event();
kevent = event.key;
ch = kevent.keyval;
g_print("input char: %c\n", ch);
}
----------------------------------------------------------------
compile test1.c and run test1 like bellow.
$ ./test1 &
$ Input charactor: d <- push key "d"
Input charactor: d
Although I don't know why character "d" is displayed twice,
I can avoid an err of sigsegv.
thanks.
---
Hideki
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