Removed warnings.

svn path=/trunk/mcs/; revision=73053

mcs/class/System.Drawing/System.Drawing.Printing/InvalidPrinterException.cs

@@ -40,11 +40,11 @@ namespace System.Drawing.Printing {
 #endif
 	public class InvalidPrinterException : SystemException {
 
-		private PrinterSettings settings;
+//		private PrinterSettings settings;
 
 		public InvalidPrinterException (PrinterSettings settings): base(InvalidPrinterException.GetMessage(settings))
 		{
-			this.settings = settings;
+//			this.settings = settings;
 		}
 
 		protected InvalidPrinterException (SerializationInfo info, StreamingContext context)

mcs/class/System.Drawing/System.Drawing.Printing/PreviewPrintController.cs

@@ -47,7 +47,7 @@ namespace System.Drawing.Printing
 			pageInfoList = new ArrayList ();
 		}
 #if NET_2_0
-		public virtual bool IsPreview { 
+		public override bool IsPreview { 
 			get { return true; }
 		}
 #endif		

mcs/class/System.Drawing/System.Drawing/gdipStructs.cs

@@ -38,10 +38,11 @@ namespace System.Drawing
 	[StructLayout(LayoutKind.Sequential)]
 	internal struct GdiplusStartupInput
 	{
-                uint 		GdiplusVersion;
-                IntPtr 		DebugEventCallback;
-                int             SuppressBackgroundThread;
-                int 		SuppressExternalCodecs;
+			// internalted to silent compiler
+			internal uint 		GdiplusVersion;
+			internal IntPtr 		DebugEventCallback;
+			internal int             SuppressBackgroundThread;
+			internal int 		SuppressExternalCodecs;
     
 	    	internal static GdiplusStartupInput MakeGdiplusStartupInput ()
 	    	{