From 32e9b5062c2646211dbe63a826e6cd2eb9b990f8 Mon Sep 17 00:00:00 2001
From: Tomaka17 <pierre.krieger1708@gmail.com>
Date: Tue, 12 Aug 2014 17:04:12 +0200
Subject: Add failure if SwapBuffers returns an error

---
 src/win32/mod.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/win32')

diff --git a/src/win32/mod.rs b/src/win32/mod.rs
index da94c70..e3920a8 100644
--- a/src/win32/mod.rs
+++ b/src/win32/mod.rs
@@ -191,7 +191,10 @@ impl Window {
     /// See the docs if the crate root file.
     pub fn swap_buffers(&self) {
         unsafe {
-            ffi::SwapBuffers(self.hdc);
+            if ffi::SwapBuffers(self.hdc) == 0 {
+                use std::os;
+                fail!("{}", os::error_string(os::errno()));
+            }
         }
     }
 }
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