Resolution changing now works ok under windows.

Source/Framework/Framework.cs

@@ -113,7 +113,7 @@ namespace OpenTK.Frameworks
 
         public Framework()
         {
-            Setup(null, 640, 480, new OpenTK.OpenGL.ColorDepth(8, 8, 8, 8), 16, 0, true);
+            Setup(null, 640, 480, new OpenTK.OpenGL.ColorDepth(8, 8, 8, 8), 16, 0, false);
         }
 
 
@@ -172,10 +172,9 @@ namespace OpenTK.Frameworks
             //this.SetStyle(ControlStyles.ResizeRedraw, true);                    // Redraw On Resize
             this.SetStyle(ControlStyles.UserPaint, true);                       // We'll Handle Painting Ourselves
 
-            this.Width = width;
+            this.Size = new Size(width, height);
-            this.Height = height;
+            Fullscreen = Implementation.SetResolution(fullscreen);
-
+            this.Size = new Size(width, height);    // Force the window to change to the requested resolution.
-            Fullscreen = Implementation.ToggleFullscreen(fullscreen);
 
             if (title == null)
                 title = "OpenTK Windows application";

Source/Framework/FrameworkImplementation.cs

@@ -15,11 +15,12 @@ namespace OpenTK.Frameworks
     {
         internal abstract class FrameworkImplementation
         {
-            abstract public void OnHandleCreated(object sender, EventArgs args);
+            public abstract void OnHandleCreated(object sender, EventArgs args);
-            abstract public bool IsIdle();
+            public abstract bool IsIdle();
-            abstract public void Setup();
+            public abstract void Setup();
             //abstract public void CloseWindow();
-            abstract public bool ToggleFullscreen(bool fullscreen);
+            public abstract bool SetResolution(int width, int height, OpenTK.OpenGL.ColorDepth color, bool fullscreen);
+            public abstract bool SetResolution(bool fullscreen);
         }
     }
 }

Source/Framework/WindowsImplementation.cs

@@ -50,7 +50,53 @@ namespace OpenTK.Frameworks
             {
             }
 
-            public override bool ToggleFullscreen(bool fullscreen)
+            public override bool SetResolution(int width, int height, OpenTK.OpenGL.ColorDepth color, bool fullscreen)
+            {
+                if (fullscreen)
+                {
+                    Application.Idle -= framework.OnIdle;
+                    //framework.Context.Dispose();
+
+                    Api.DeviceMode ScreenSettings = new Api.DeviceMode();           // Device Mode
+                    ScreenSettings.Size = (short)Marshal.SizeOf(ScreenSettings);    // Size Of The Devmode Structure
+                    ScreenSettings.PelsWidth = width;                     // Selected Screen Width
+                    ScreenSettings.PelsHeight = height;                   // Selected Screen Height
+                    ScreenSettings.BitsPerPel = color.Alpha +           // Selected Bits Per Pixel
+                                                color.Red +
+                                                color.Green +
+                                                color.Blue;
+                    ScreenSettings.Fields = Api.Constants.DM_BITSPERPEL | Api.Constants.DM_PELSWIDTH | Api.Constants.DM_PELSHEIGHT;
+
+                    //framework.Context = GLContext.Create(framework, framework.ColorDepth, 16, 0);
+                    Application.Idle += framework.OnIdle;
+
+                    // Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
+                    if (Api.ChangeDisplaySettings(ref ScreenSettings, Api.Constants.CDS_FULLSCREEN) == Api.Constants.DISP_CHANGE_SUCCESSFUL)
+                    {
+                        framework.FormBorderStyle = FormBorderStyle.None;
+                        framework.StartPosition = FormStartPosition.Manual;
+                        framework.Location = new System.Drawing.Point(0, 0);
+                        //framework.Region = new Region(new Rectangle(0, 0, width, height));
+                        framework.Capture = true;
+                        framework.SetTopLevel(true);
+                        Cursor.Hide();
+
+                        framework.Size = new Size(width, height);
+
+                        return true;
+                    }
+                    else
+                    {
+                        return false;
+                    }
+                }
+
+                framework.Size = new Size(width, height);
+
+                return false;
+            }
+
+            public override bool SetResolution(bool fullscreen)
             {
                 if (fullscreen)
                 {
@@ -76,7 +122,7 @@ namespace OpenTK.Frameworks
                         framework.FormBorderStyle = FormBorderStyle.None;
                         framework.StartPosition = FormStartPosition.Manual;
                         framework.Location = new System.Drawing.Point(0, 0);
-                        //this.Region = new Region(new Rectangle(0, 0, width, height));
+                        //framework.Region = new Region(new Rectangle(0, 0, width, height));
                         framework.Capture = true;
                         framework.SetTopLevel(true);
                         Cursor.Hide();

Source/Framework/X11Implementation.cs

@@ -44,7 +44,12 @@ namespace OpenTK.Frameworks
                 //              }
             }
 
-            public override bool ToggleFullscreen(bool fullscreen)
+            public override bool SetResolution(int width, int height, OpenTK.OpenGL.ColorDepth color, bool fullscreen)
+            {
+                throw new Exception("The method or operation is not implemented.");
+            }
+
+            public override bool SetResolution(bool fullscreen)
             {
                 throw new Exception("The method or operation is not implemented.");
             }