On Wed, Jun 27, 2007 at 05:46:57PM +0200, Jerome Blondel wrote:
> I've set up a motion-notify-event handler in a GtkDrawingArea, adding
> the POINTER_MOTION and POINTER_MOTION_HINT event masks to the widget.
> The event is triggered only when the pointer moves into the window. I'd
> like to receive an event for each movement of the pointer. Is there
> something I might have missed,
Yes, the fact that no one knows what your code really does
if you don't post it.
Anyway, this works:
====================================================
#include <gtk/gtk.h>
static gboolean
motion(GtkWidget *area,
GdkEventMotion *event)
{
if (event->is_hint) {
gint x, y;
gdk_window_get_pointer(area->window, &x, &y, NULL);
g_print("Motion (hint): %d %d\n", x, y);
}
else
g_print("Motion: %g %g\n", event->x, event->y);
return FALSE;
}
int
main(int argc, char *argv[])
{
GtkWidget *window, *area;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
area = gtk_drawing_area_new();
gtk_widget_add_events(area,
GDK_POINTER_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK);
gtk_container_add(GTK_CONTAINER(window), area);
g_signal_connect(area, "motion-notify-event", G_CALLBACK(motion), NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
====================================================
The thing you *possibly* forgot is to call
gdk_window_get_pointer() which you have to as you explicitly
asked -- by using GDK_POINTER_MOTION_HINT_MASK -- not to get
any further events until you call gdk_window_get_pointer().
Yeti
--
http://gwyddion.net/
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