[Ide] Ensure graphics contexts are disposed.

1 files changed, 23 insertions, 13 deletions

diff --git a/main/src/core/MonoDevelop.Ide/MonoDevelop.Components.Docking/PlaceholderWindow.cs b/main/src/core/MonoDevelop.Ide/MonoDevelop.Components.Docking/PlaceholderWindow.cs
index faf3966c12..935fa341a9 100644
--- a/main/src/core/MonoDevelop.Ide/MonoDevelop.Components.Docking/PlaceholderWindow.cs
+++ b/main/src/core/MonoDevelop.Ide/MonoDevelop.Components.Docking/PlaceholderWindow.cs
@@ -64,6 +64,15 @@ namespace MonoDevelop.Components.Docking
 	   		redgc.RgbFgColor = frame.Style.Background (StateType.Selected);
 		}
 
+		protected override void OnDestroyed ()

+		{
+			if (redgc != null) {
+				redgc.Dispose ();
+				redgc = null;
+			}

+			base.OnDestroyed ();

+		}
+
 		protected override void OnRealized ()
 		{
 			base.OnRealized ();
@@ -76,19 +85,20 @@ namespace MonoDevelop.Components.Docking
 			black = new Gdk.Color (0, 0, 0);
 			black.Pixel = 1;
 			white = new Gdk.Color (255, 255, 255);
-			white.Pixel = 0;
-			
-			Gdk.Pixmap pm = new Pixmap (this.GdkWindow, width, height, 1);
-			Gdk.GC gc = new Gdk.GC (pm);
-			gc.Background = white;
-			gc.Foreground = white;
-			pm.DrawRectangle (gc, true, 0, 0, width, height);
-			
-			gc.Foreground = black;
-			pm.DrawRectangle (gc, false, 0, 0, width - 1, height - 1);
-			pm.DrawRectangle (gc, false, 1, 1, width - 3, height - 3);
-			
-			this.ShapeCombineMask (pm, 0, 0);
+			white.Pixel = 0;

+
+			using (Gdk.Pixmap pm = new Pixmap (this.GdkWindow, width, height, 1)) {

+				using (Gdk.GC gc = new Gdk.GC (pm)) {

+					gc.Background = white;

+					gc.Foreground = white;

+					pm.DrawRectangle (gc, true, 0, 0, width, height);

+

+					gc.Foreground = black;

+					pm.DrawRectangle (gc, false, 0, 0, width - 1, height - 1);

+					pm.DrawRectangle (gc, false, 1, 1, width - 3, height - 3);

+				}

+				this.ShapeCombineMask (pm, 0, 0);
+			}
 		}
 		
 		protected override void OnSizeAllocated (Rectangle allocation)