support for .NET framework 3.5

Still have bugs

Net35/HandyControl_Net35/Shell/SystemCommands.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Security;
+using System.Security.Permissions;
+using System.Windows;
+using System.Windows.Input;
+using System.Windows.Interop;
+using Standard;
+
+namespace Microsoft.Windows.Shell
+{
+    public static class SystemCommands
+    {
+        static SystemCommands()
+        {
+            CloseWindowCommand = new RoutedCommand("CloseWindow", typeof(SystemCommands));
+            MaximizeWindowCommand = new RoutedCommand("MaximizeWindow", typeof(SystemCommands));
+            MinimizeWindowCommand = new RoutedCommand("MinimizeWindow", typeof(SystemCommands));
+            RestoreWindowCommand = new RoutedCommand("RestoreWindow", typeof(SystemCommands));
+            ShowSystemMenuCommand = new RoutedCommand("ShowSystemMenu", typeof(SystemCommands));
+        }
+
+        public static RoutedCommand CloseWindowCommand { get; }
+        public static RoutedCommand MaximizeWindowCommand { get; }
+        public static RoutedCommand MinimizeWindowCommand { get; }
+        public static RoutedCommand RestoreWindowCommand { get; }
+        public static RoutedCommand ShowSystemMenuCommand { get; }
+
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     <SecurityNote>
+        [SecurityCritical]
+        private static void _PostSystemCommand(Window window, SC command)
+        {
+            var hwnd = new WindowInteropHelper(window).Handle;
+            if (hwnd == IntPtr.Zero || !NativeMethods.IsWindow(hwnd))
+                return;
+
+            NativeMethods.PostMessage(hwnd, WM.SYSCOMMAND, new IntPtr((int) command), IntPtr.Zero);
+        }
+
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     Safe     : Demands full trust permissions
+        ///     <SecurityNote>
+        [SecuritySafeCritical]
+        [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
+        public static void CloseWindow(Window window)
+        {
+            Verify.IsNotNull(window, "window");
+            _PostSystemCommand(window, SC.CLOSE);
+        }
+
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     Safe     : Demands full trust permissions
+        ///     <SecurityNote>
+        [SecuritySafeCritical]
+        [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
+        public static void MaximizeWindow(Window window)
+        {
+            Verify.IsNotNull(window, "window");
+            _PostSystemCommand(window, SC.MAXIMIZE);
+        }
+
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     Safe     : Demands full trust permissions
+        ///     <SecurityNote>
+        [SecuritySafeCritical]
+        [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
+        public static void MinimizeWindow(Window window)
+        {
+            Verify.IsNotNull(window, "window");
+            _PostSystemCommand(window, SC.MINIMIZE);
+        }
+
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     Safe     : Demands full trust permissions
+        ///     <SecurityNote>
+        [SecuritySafeCritical]
+        [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
+        public static void RestoreWindow(Window window)
+        {
+            Verify.IsNotNull(window, "window");
+            _PostSystemCommand(window, SC.RESTORE);
+        }
+
+        /// <summary>Display the system menu at a specified location.</summary>
+        /// <param name="screenLocation">The location to display the system menu, in logical screen coordinates.</param>
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     Safe     : Demands full trust permissions
+        ///     <SecurityNote>
+        [SecuritySafeCritical]
+        [PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
+        public static void ShowSystemMenu(Window window, Point screenLocation)
+        {
+            Verify.IsNotNull(window, "window");
+            ShowSystemMenuPhysicalCoordinates(window, DpiHelper.LogicalPixelsToDevice(screenLocation));
+        }
+
+        /// <SecurityNote>
+        ///     Critical : Calls critical methods
+        ///     <SecurityNote>
+        [SecurityCritical]
+        internal static void ShowSystemMenuPhysicalCoordinates(Window window, Point physicalScreenLocation)
+        {
+            const uint TPM_RETURNCMD = 0x0100;
+            const uint TPM_LEFTBUTTON = 0x0;
+
+            Verify.IsNotNull(window, "window");
+            var hwnd = new WindowInteropHelper(window).Handle;
+            if (hwnd == IntPtr.Zero || !NativeMethods.IsWindow(hwnd))
+                return;
+
+            var hmenu = NativeMethods.GetSystemMenu(hwnd, false);
+
+            var cmd = NativeMethods.TrackPopupMenuEx(hmenu, TPM_LEFTBUTTON | TPM_RETURNCMD,
+                (int) physicalScreenLocation.X, (int) physicalScreenLocation.Y, hwnd, IntPtr.Zero);
+            if (0 != cmd)
+                NativeMethods.PostMessage(hwnd, WM.SYSCOMMAND, new IntPtr(cmd), IntPtr.Zero);
+        }
+    }
+}