Was wondering if anybody has any idea(s) why the code below would seem
to work fine on GTK/X11 (at least I don't see any error messages), but
fail on GTK/DirectFB? When the application is exited by hitting the
"Quit" button, I receive the following error message:
*** glibc detected *** TextDemo: double free or corruption (out): 0x4035b1b0 ***
I'm trying to figure out if this is a GTK related problem (i.e., I'm
doing something wrong with GTK) or a problem with GTK/DirectFB. Thanks
in advance for any suggestions / help.
[code]
#include "common.h"
GtkWidget* main_window;
static gboolean destroy_event(GtkWidget* widget, void* data)
{
gtk_main_quit();
return FALSE;
}
static void button_click_event(void)
{
gtk_widget_destroy(main_window);
}
int main(int argc, char* argv[])
{
GtkWidget *text_view, *box, *button;
// initialize multi-threading within GLib
g_thread_init(NULL);
// initialize multi-threading within GDK
gdk_threads_init();
// acquire thread lock
gdk_threads_enter();
gtk_init(&argc, &argv);
// create main window
main_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
if (main_window == NULL)
abort();
g_signal_connect(G_OBJECT(main_window), "destroy",
G_CALLBACK(destroy_event), NULL);
gtk_widget_show(main_window);
box = gtk_vbox_new(FALSE, 5);
if (box == NULL)
abort();
gtk_widget_show(box);
gtk_container_add(GTK_CONTAINER(main_window), box);
text_view = gtk_text_view_new();
if (text_view == NULL)
abort();
gtk_widget_show(text_view);
gtk_box_pack_start(GTK_BOX(box), text_view, TRUE, TRUE, 5);
button = gtk_button_new_with_label("Quit");
if (button == NULL)
abort();
g_signal_connect(G_OBJECT(button), "clicked",
G_CALLBACK(button_click_event), NULL);
gtk_widget_show(button);
gtk_box_pack_start(GTK_BOX(box), button, TRUE, TRUE, 5);
// run the main loop
gtk_main();
// release thread lock
gdk_threads_leave();
return 0;
}
[/code]
--
Mark
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