add SystemMenuHook

src/Shared/HandyControl_Shared/Tools/Interop/NativeMethods.cs

@@ -36,6 +36,7 @@ namespace HandyControl.Tools.Interop
             WM_KEYUP = 0x0101,
             WM_SYSKEYDOWN = 0x0104,
             WM_SYSKEYUP = 0x0105,
+            WM_SYSCOMMAND = 0x112,
             WM_MOUSEMOVE = 0x0200,
             WM_LBUTTONDOWN = 0x0201,
             WM_LBUTTONUP = 0x0202,
@@ -48,6 +49,8 @@ namespace HandyControl.Tools.Interop
             WM_MBUTTONDBLCLK = 0x0209,
             WM_CLIPBOARDUPDATE = 0x031D,
             WM_USER = 0x0400,
+            MF_BYPOSITION = 0x400,
+            MF_SEPARATOR = 0x800,
             TB_GETBUTTON = WM_USER + 23,
             TB_BUTTONCOUNT = WM_USER + 24,
             TB_GETITEMRECT = WM_USER + 29,
@@ -232,5 +235,11 @@ namespace HandyControl.Tools.Interop
         [DllImport(ExternDll.User32, SetLastError = true)]
         [return: MarshalAs(UnmanagedType.Bool)]
         public static extern bool RemoveClipboardFormatListener(IntPtr hwnd);
+
+        [DllImport(ExternDll.User32)]
+        public static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);
+
+        [DllImport(ExternDll.User32)]
+        public static extern bool InsertMenu(IntPtr hMenu, int wPosition, int wFlags, int wIDNewItem, string lpNewItem);
     }
 }