From 96433cdf19641121a40b567c00fb94df8974a1c0 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Thu, 13 Feb 2014 14:23:16 +0100
Subject: [PATCH] Fixed meaningless Win32 video mode restore.

---
 src/win32_monitor.c  | 9 +++++++--
 src/win32_platform.h | 1 +
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/win32_monitor.c b/src/win32_monitor.c
index ae452460..71ec12d4 100644
--- a/src/win32_monitor.c
+++ b/src/win32_monitor.c
@@ -81,6 +81,7 @@ GLboolean _glfwSetVideoMode(_GLFWmonitor* monitor, const GLFWvidmode* desired)
         return GL_FALSE;
     }
 
+    monitor->win32.modeChanged = GL_TRUE;
     return GL_TRUE;
 }
 
@@ -88,8 +89,12 @@ GLboolean _glfwSetVideoMode(_GLFWmonitor* monitor, const GLFWvidmode* desired)
 //
 void _glfwRestoreVideoMode(_GLFWmonitor* monitor)
 {
-    ChangeDisplaySettingsEx(monitor->win32.name,
-                            NULL, NULL, CDS_FULLSCREEN, NULL);
+    if (monitor->win32.modeChanged)
+    {
+        ChangeDisplaySettingsEx(monitor->win32.name,
+                                NULL, NULL, CDS_FULLSCREEN, NULL);
+        monitor->win32.modeChanged = GL_FALSE;
+    }
 }
 
 
diff --git a/src/win32_platform.h b/src/win32_platform.h
index ce80e4d8..a265f050 100644
--- a/src/win32_platform.h
+++ b/src/win32_platform.h
@@ -234,6 +234,7 @@ typedef struct _GLFWmonitorWin32
 {
     // This size matches the static size of DISPLAY_DEVICE.DeviceName
     WCHAR               name[32];
+    GLboolean           modeChanged;
 
 } _GLFWmonitorWin32;