ui: fix icon display for GTK frontend under GNOME Shell with Wayland

The icon associated with a GtkWindow is just a hint to window managers
and not all of them will honour it. Some will instead want to show the
icon listed by the .desktop file. The desktop file is located based on
the application ID, which is set using g_set_prgname. QEMU has not
historically provided a desktop file or set its app ID, so it got a
broken icon in GNOME shell, which is now fixed.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20190110120047.25369-3-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/ui/gtk.c b/ui/gtk.c
index ec63befa16..87c0e33d2a 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -2226,6 +2226,7 @@ static void gtk_display_init(DisplayState *ds, DisplayOptions *opts)
 
     theme = gtk_icon_theme_get_default();
     gtk_icon_theme_prepend_search_path(theme, CONFIG_QEMU_ICONDIR);
+    g_set_prgname("qemu");
 
     s->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     s->vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);