From 77e4c61190a4d685d891fd7a7e629442f0716e43 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Thu, 13 Jun 2013 18:29:21 +0200
Subject: [PATCH] Fixed broken WGL error detection.

Context creation was attempted even if no valid pixel formats had been
found during enumeration.
---
 README.md         | 3 +++
 src/wgl_context.c | 8 ++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index d7e0555a..70aae477 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,9 @@ See the [GLFW 3.0 documentation](http://www.glfw.org/docs/3.0/).
 
 ## Changelog
 
+ - [Win32] Bugfix: Context creation was attempted even if no valid pixel formats
+                   had been found
+
 
 ## Contact
 
diff --git a/src/wgl_context.c b/src/wgl_context.c
index d98ba063..61d9a22e 100644
--- a/src/wgl_context.c
+++ b/src/wgl_context.c
@@ -276,9 +276,13 @@ static GLboolean choosePixelFormat(_GLFWwindow* window,
     }
 
     closest = _glfwChooseFBConfig(desired, usableConfigs, usableCount);
-    if (closest)
-        *result = closest->wgl;
+    if (!closest)
+    {
+        free(usableConfigs);
+        return GL_FALSE;
+    }
 
+    *result = closest->wgl;
     free(usableConfigs);
 
     return GL_TRUE;