diff --git a/Source/Examples/WinForms/DerivedGLControl.cs b/Source/Examples/WinForms/DerivedGLControl.cs index 5bcd33e1..3f11e1da 100644 --- a/Source/Examples/WinForms/DerivedGLControl.cs +++ b/Source/Examples/WinForms/DerivedGLControl.cs @@ -22,8 +22,12 @@ namespace Examples.WinForms set { clearColor = value; - MakeCurrent(); - GL.ClearColor(clearColor); + + if (!this.DesignMode) + { + MakeCurrent(); + GL.ClearColor(clearColor); + } } }