From 9bdc21cabdc3d7bc68e4c9d1dce1fe93621e9357 Mon Sep 17 00:00:00 2001
From: the_fiddler <the_fiddler@ebc5dd9b-fb1d-0410-b6f8-d24c324e9604>
Date: Tue, 19 May 2009 09:45:36 +0000
Subject: [PATCH] Added diagnostic message when ReleaseDC fails.

---
 Source/OpenTK/Platform/Windows/WinWindowInfo.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Source/OpenTK/Platform/Windows/WinWindowInfo.cs b/Source/OpenTK/Platform/Windows/WinWindowInfo.cs
index 33d9414f..b192cb8d 100644
--- a/Source/OpenTK/Platform/Windows/WinWindowInfo.cs
+++ b/Source/OpenTK/Platform/Windows/WinWindowInfo.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
 
 namespace OpenTK.Platform.Windows
 {
@@ -95,7 +97,8 @@ namespace OpenTK.Platform.Windows
             if (!disposed)
             {
                 if (this.dc != IntPtr.Zero)
-                    Functions.ReleaseDC(this.handle, this.dc);
+                    if (!Functions.ReleaseDC(this.handle, this.dc))
+                        Debug.Print("[Warning] Failed to release device context {0}. Windows error: {1}.", this.dc, Marshal.GetLastWin32Error());
 
                 if (manual)
                 {