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commit 402254b5752fcf6a8197b92f558cb0c35289fa74
parent 9a7604bb35212dcc49e1e108a0631a0906560e5a
Author: martin <martin.sandsmark@kde.org>
Date:   Wed, 25 May 2016 22:19:17 +0200

Flush xcb connection after opening fullscreen window (#74)

We need to ensure that the window handle is valid, i. e. the window is
actually created and accessible, before returning.

This is necessary because we immediately fork after returning, and the
child process opens its own X11 connection and expects the window handle
to be valid.

Fixes #46
Diffstat:
M
xcb.c
 | 
4
++++

1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/xcb.c b/xcb.c
@@ -10,6 +10,7 @@
 #include <xcb/xcb.h>
 #include <xcb/xcb_image.h>
 #include <xcb/xcb_atom.h>
+#include <xcb/xcb_aux.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
@@ -150,6 +151,9 @@ xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, c
     values[0] = XCB_STACK_MODE_ABOVE;
     xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 
+    /* Ensure that the window is created and set up before returning */
+    xcb_aux_sync(conn);
+
     return win;
 }