support for .NET framework 3.5

Still have bugs

Net35/HandyControl_Net35/Shell/Standard/SWP.cs

@@ -0,0 +1,25 @@
+namespace Standard
+{
+    using System;
+
+    [Flags]
+    internal enum SWP
+    {
+        ASYNCWINDOWPOS = 0x4000,
+        DEFERERASE = 0x2000,
+        DRAWFRAME = 0x20,
+        FRAMECHANGED = 0x20,
+        HIDEWINDOW = 0x80,
+        NOACTIVATE = 0x10,
+        NOCOPYBITS = 0x100,
+        NOMOVE = 2,
+        NOOWNERZORDER = 0x200,
+        NOREDRAW = 8,
+        NOREPOSITION = 0x200,
+        NOSENDCHANGING = 0x400,
+        NOSIZE = 1,
+        NOZORDER = 4,
+        SHOWWINDOW = 0x40
+    }
+}
+