I should also note that setting the cursor explicitly to the LEFT_PTR in
any gtk app will cause that app to show cursor updates properly when
hovered over (which is why I think Firefox still works when you hover
over it as mentioned in bug #86184 ):
#include <gdk/gdk.h>
#include <gtk/gtk.h>
int
main()
{
gtk_init(NULL, NULL);
GdkCursor *default_cursor = gdk_cursor_new(GDK_ARROW);
GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(G_OBJECT(window), "destroy", gtk_main_quit, NULL);
gtk_widget_realize(window);
gtk_widget_show(window);
gdk_window_set_cursor(gtk_widget_get_window(window), default_cursor);
g_object_unref(default_cursor);
gtk_main();
return 0;
}
And we can force a cursor update by setting the LEFT_PTR on the root
window (but this will also break future cursor updates if you had logged
in with gdm or lightdm-gtk-greeter with the patch above):
#include <gdk/gdk.h>
#include <gtk/gtk.h>
gboolean idle_cb(gpointer user_data)
{
gtk_main_quit();
return FALSE;
}
int main()
{
gtk_init (NULL, NULL);
GdkCursor *cursor = gdk_cursor_new (GDK_LEFT_PTR);
gdk_window_set_cursor (gdk_get_default_root_window (), cursor);
g_object_unref (cursor);
g_idle_add (idle_cb, NULL);
gtk_main ();
return 0;
}
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https://bugs.launchpad.net/bugs/1024482
Title:
Mouse cursor theme does not change from default after login
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