Merge pull request #87 from HandyOrg/add-Keyboard-Hook

add KeyboardHook

src/Shared/HandyControl_Shared/Controls/Time/TimeBar/TimeBar.cs

@@ -6,7 +6,6 @@ using System.Windows.Input;
 using System.Windows.Media;
 using HandyControl.Data;
 using HandyControl.Interactivity;
-using HandyControl.Tools;
 
 
 namespace HandyControl.Controls

src/Shared/HandyControl_Shared/Data/Args/KeyboardHookEventArgs.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Windows.Input;
+
+namespace HandyControl.Data
+{
+    internal class KeyboardHookEventArgs : EventArgs
+    {
+        public Key Key { get; }
+
+        public KeyboardHookEventArgs(int virtualKey)
+        {
+            Key = KeyInterop.KeyFromVirtualKey(virtualKey);
+        }
+    }
+}

src/Shared/HandyControl_Shared/HandyControl_Shared.projitems

@@ -113,6 +113,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Window\Window.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Data\Args\CancelRoutedEventArgs.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Data\Args\FunctionEventArgs!1.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Data\Args\KeyboardHookEventArgs.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Data\Args\MouseHookEventArgs.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Data\ColorRange.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Data\Enum\BadgeStatus.cs" />
@@ -246,6 +247,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Helper\SingleOpenHelper.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Helper\ValidateHelper.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Helper\VisualHelper.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Tools\Hook\KeyboardHook.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Hook\MouseHook.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Interop\BitmapHandle.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Interop\BITMAPINFO.cs" />
@@ -261,7 +263,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Interop\UnsafeNativeMethods.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Interop\WNDCLASS.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Interop\WpfSafeHandle.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Tools\MouseDragElementBehaviorEx.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Interactivity\MouseDragElementBehaviorEx.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\RegularJudgment.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\RegularPatterns.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\StyleSelector\RadioGroupItemStyleSelector.cs" />

src/Shared/HandyControl_Shared/Interactivity/MouseDragElementBehaviorEx.cs

@@ -2,9 +2,9 @@
 using System.Windows.Input;
 using System.Windows.Media;
 using HandyControl.Data;
-using HandyControl.Interactivity;
+using HandyControl.Tools;
 
-namespace HandyControl.Tools
+namespace HandyControl.Interactivity
 {
     /// <summary>
     ///     鼠标拖动行为，该类是反编译微软的System.Windows.Interactivity程序集得到的，并对其做了些扩展

src/Shared/HandyControl_Shared/Tools/Hook/KeyboardHook.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Diagnostics;
+using System.Runtime.InteropServices;
+using HandyControl.Data;
+using HandyControl.Tools.Interop;
+
+namespace HandyControl.Tools
+{
+    internal class KeyboardHook
+    {
+        public static event EventHandler<KeyboardHookEventArgs> KeyDown;
+
+        public static event EventHandler<KeyboardHookEventArgs> KeyUp;
+
+        private static IntPtr HookId = IntPtr.Zero;
+
+        private static readonly UnsafeNativeMethods.HookProc Proc = HookCallback;
+
+        public static void Start() => HookId = SetHook(Proc);
+
+        public static void Stop() => UnsafeNativeMethods.UnhookWindowsHookEx(HookId);
+
+        private static IntPtr SetHook(UnsafeNativeMethods.HookProc proc)
+        {
+            using (var curProcess = Process.GetCurrentProcess())
+            using (var curModule = curProcess.MainModule)
+            {
+                if (curModule != null)
+                {
+                    return UnsafeNativeMethods.SetWindowsHookEx((int)UnsafeNativeMethods.HookType.WH_KEYBOARD_LL, proc,
+                        UnsafeNativeMethods.GetModuleHandle(curModule.ModuleName), 0);
+                }
+                return IntPtr.Zero;
+            }
+        }
+
+        private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
+        {
+            if (nCode >= 0)
+            {
+                if (wParam == (IntPtr)NativeMethods.WM_KEYDOWN)
+                {
+                    var virtualKey = Marshal.ReadInt32(lParam);
+
+                    KeyDown?.Invoke(null, new KeyboardHookEventArgs(virtualKey));
+                }
+                else if (wParam == (IntPtr)NativeMethods.WM_KEYUP)
+                {
+                    var virtualKey = Marshal.ReadInt32(lParam);
+
+                    KeyUp?.Invoke(null, new KeyboardHookEventArgs(virtualKey));
+                }
+            }
+            return UnsafeNativeMethods.CallNextHookEx(HookId, nCode, wParam, lParam);
+        }
+    }
+}

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

@@ -31,6 +31,8 @@ namespace HandyControl.Tools.Interop
             NIIF_INFO = 0x00000001,
             NIIF_WARNING = 0x00000002,
             NIIF_ERROR = 0x00000003,
+            WM_KEYDOWN = 0x0100,
+            WM_KEYUP = 0x0101,
             WM_MOUSEMOVE = 0x0200,
             WM_LBUTTONDOWN = 0x0201,
             WM_LBUTTONUP = 0x0202,

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

@@ -186,7 +186,8 @@ namespace HandyControl.Tools.Interop
 
         public enum HookType
         {
-            WH_MOUSE_LL = 14,
+            WH_KEYBOARD_LL = 13,
+            WH_MOUSE_LL = 14
         }
 
         [StructLayout(LayoutKind.Sequential)]