From 9ccb301c04d51fecabcbe9a36f30fd35f65dc59f Mon Sep 17 00:00:00 2001
From: the_fiddler <the_fiddler@ebc5dd9b-fb1d-0410-b6f8-d24c324e9604>
Date: Fri, 25 Jan 2008 10:23:17 +0000
Subject: [PATCH] Refresh rate may be zero.

---
 Source/OpenTK/Graphics/DisplayResolution.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Source/OpenTK/Graphics/DisplayResolution.cs b/Source/OpenTK/Graphics/DisplayResolution.cs
index 1cf62357..b2f2d32a 100644
--- a/Source/OpenTK/Graphics/DisplayResolution.cs
+++ b/Source/OpenTK/Graphics/DisplayResolution.cs
@@ -24,10 +24,11 @@ namespace OpenTK.Graphics
 
         internal DisplayResolution(int width, int height, int bitsPerPixel, float refreshRate)
         {
+            // Refresh rate may be zero, since this information may not be available on some platforms.
             if (width <= 0) throw new ArgumentOutOfRangeException("width", "Must be greater than zero.");
             if (height <= 0) throw new ArgumentOutOfRangeException("height", "Must be greater than zero.");
             if (bitsPerPixel <= 0) throw new ArgumentOutOfRangeException("bitsPerPixel", "Must be greater than zero.");
-            if (refreshRate <= 0) throw new ArgumentOutOfRangeException("refreshRate", "Must be greater than zero.");
+            if (refreshRate < 0) throw new ArgumentOutOfRangeException("refreshRate", "Must be greater than zero.");
 
             this.width = width;
             this.height = height;