From f5f5add52941db500e84c01d40ebd4cda986e43f Mon Sep 17 00:00:00 2001
From: ziga-lunarg <ziga@lunarg.com>
Date: Sat, 20 Sep 2025 16:17:33 +0300
Subject: cube: Fix xlib window close

XSetVMProtocols is needed to register WM_DELETE_WINDOW.
Without this the window close event was never received. The window was
still destroyed and vkAcquireNextImageKHR returned
VK_ERROR_SURFACE_LOST_KHR
---
 cube/cube.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'cube/cube.cpp')

diff --git a/cube/cube.cpp b/cube/cube.cpp
index bad2cccb..7f4b45d2 100644
--- a/cube/cube.cpp
+++ b/cube/cube.cpp
@@ -3224,6 +3224,7 @@ void Demo::create_window<WsiPlatform::xlib>() {
     XMapWindow(xlib_display, xlib_window);
     XFlush(xlib_display);
     xlib_wm_delete_window = XInternAtom(xlib_display, "WM_DELETE_WINDOW", False);
+    XSetWMProtocols(xlib_display, xlib_window, &xlib_wm_delete_window, 1);
 }
 
 void Demo::handle_xlib_event(const XEvent *event) {
-- 
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