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ui/gkt: release all keys on grab-broken-event

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There is no way to grab the Ctrl-Alt-Del key combination on
Windows. This key combination will leave all three keys in a
stuck condition. This patch uses the grab-broken-event to
release the keys.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-3-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Volker Rümelin 2020-05-16 09:20:06 +02:00 committed by Gerd Hoffmann
parent bd593d2cd9
commit 0c4b1a7dc5
1 changed files with 21 additions and 0 deletions
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21
ui/gtk.c
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@ -1142,6 +1142,25 @@ static gboolean gd_key_event(GtkWidget *widget, GdkEventKey *key, void *opaque)
return TRUE;
}
static gboolean gd_grab_broken_event(GtkWidget *widget,
GdkEventGrabBroken *event, void *opaque)
{
#ifdef CONFIG_WIN32
/*
* On Windows the Ctrl-Alt-Del key combination can't be grabbed. This
* key combination leaves all three keys in a stuck condition. We use
* the grab-broken-event to release all keys.
*/
if (event->keyboard) {
VirtualConsole *vc = opaque;
GtkDisplayState *s = vc->s;
gtk_release_modifiers(s);
}
#endif
return TRUE;
}
static gboolean gd_event(GtkWidget *widget, GdkEvent *event, void *opaque)
{
if (event->type == GDK_MOTION_NOTIFY) {
@ -1910,6 +1929,8 @@ static void gd_connect_vc_gfx_signals(VirtualConsole *vc)
G_CALLBACK(gd_focus_out_event), vc);
g_signal_connect(vc->gfx.drawing_area, "configure-event",
G_CALLBACK(gd_configure), vc);
g_signal_connect(vc->gfx.drawing_area, "grab-broken-event",
G_CALLBACK(gd_grab_broken_event), vc);
} else {
g_signal_connect(vc->gfx.drawing_area, "key-press-event",
G_CALLBACK(gd_text_key_down), vc);