Bug#778650: [Patch] [BugID:778650] freerdp-x11: Alt key gets "stuck" with -grab-keyboard option when using Alt-Tab to switch between local X windows

[sriram]

# Patch pulled from upstream to fix bug ID: #778650 Thanks Petr for the
patch. 

tags 778650 patch

--- a/client/X11/xf_event.c
+++ b/client/X11/xf_event.c
@@ -456,6 +456,7 @@
 	if (event->xfocus.mode == NotifyWhileGrabbed)
 		XUngrabKeyboard(xfc->display, CurrentTime);
 
+	xf_kbd_release_all_keypress(xfc);
 	xf_kbd_clear(xfc);
 
 	if (app)
--- a/client/X11/xf_keyboard.c
+++ b/client/X11/xf_keyboard.c
@@ -75,6 +75,12 @@
 		if (xfc->pressed_keys[keycode] != NoSymbol)
 		{
 			rdp_scancode = freerdp_keyboard_get_rdp_scancode_from_x11_keycode(keycode);
+
+			// release tab before releasing the windows key.
+			// this stops the start menu from opening on unfocus event.
+			if (rdp_scancode == RDP_SCANCODE_LWIN)
+				freerdp_input_send_keyboard_event_ex(xfc->instance->input, FALSE, RDP_SCANCODE_TAB);
+
 			freerdp_input_send_keyboard_event_ex(xfc->instance->input, FALSE, rdp_scancode);
 			xfc->pressed_keys[keycode] = NoSymbol;
 		}