From 0c4b1a7dc597499814d6222da4c95cbf9de68ba6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Volker=20R=C3=BCmelin?= Date: Sat, 16 May 2020 09:20:06 +0200 Subject: ui/gkt: release all keys on grab-broken-event MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Message-id: 20200516072014.7766-3-vr_qemu@t-online.de Signed-off-by: Gerd Hoffmann --- ui/gtk.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/ui/gtk.c b/ui/gtk.c index a0b10a1..655b26d 100644 --- a/ui/gtk.c +++ b/ui/gtk.c @@ -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); -- cgit v1.1