WPF与虚拟键盘的那些事
缘起 近期项目使用到相关技术，故整理文章一篇。 获取可用输入设备 软件的本质无非是输入和输出，那么WPF如何获取电脑是否有可用输入设备呢？查询了Google,在StackOverflow上找到一个提问，原帖地址 ，代码如下： KeyboardCapabilities keyboardCapabilities = new Windows.Devices.Input.KeyboardCapabilities(); return keyboardCapabilities.KeyboardPresent != 0 ? true : false; 如果没有可用输入设备，那么就该虚拟键盘上场了。windows里面有两个虚拟键盘的程序，一个是TabTip.exe一个是osk.exe,可以直接调用进程，也可以使用 WPF的第三方组件https://github.com/maximcus/WPFTabTip 详细实现可以参考后面的链接。 平板模式 下面代码将当前系统的运行模式改为平板模式 public static readonly Guid CLSID_ImmersiveShell = new Guid("C2F03A33-21F5-47FA-B4BB-156362A2F239"); [ComImport()] [Guid("4FDA780A-ACD2-41F7-B4F2-EBE674C9BF2A")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface ITabletModeController { int GetMode(ref int mode); int SetMode(int mode, int modeTrigger); } [ComImport] [Guid("6D5140C1-7436-11CE-8034-00AA006009FA")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] internal interface IServiceProvider { [return: MarshalAs(UnmanagedType.IUnknown)] object QueryService(ref Guid service, ref Guid riid); } 调用 var pSP = (IServiceProvider)Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID_ImmersiveShell)); var pTMC = (ITabletModeController)pSP.QueryService(typeof(ITabletModeController).GUID, typeof(ITabletModeController).GUID); if (pTMC != null) { // 0 = Desktop, 1 = Tablet int nMode = 0; int nRet = pTMC.GetMode(ref nMode); nRet = pTMC.SetMode(nMode==0?1:0, 4); } 系统运行模式检测 [DllImport("user32.dll")] static extern int GetSystemMetrics(SystemMetric smIndex); //http://www.pinvoke.net/default.aspx/Enums/SystemMetric.html public enum SystemMetric { SM_CXSCREEN = 0, // 0x00 SM_CYSCREEN = 1, // 0x01 SM_CXVSCROLL = 2, // 0x02 SM_CYHSCROLL = 3, // 0x03 SM_CYCAPTION = 4, // 0x04 SM_CXBORDER = 5, // 0x05 SM_CYBORDER = 6, // 0x06 SM_CXDLGFRAME = 7, // 0x07 SM_CXFIXEDFRAME = 7, // 0x07 SM_CYDLGFRAME = 8, // 0x08 SM_CYFIXEDFRAME = 8, // 0x08 SM_CYVTHUMB = 9, // 0x09 SM_CXHTHUMB = 10, // 0x0A SM_CXICON = 11, // 0x0B SM_CYICON = 12, // 0x0C SM_CXCURSOR = 13, // 0x0D SM_CYCURSOR = 14, // 0x0E SM_CYMENU = 15, // 0x0F SM_CXFULLSCREEN = 16, // 0x10 SM_CYFULLSCREEN = 17, // 0x11 SM_CYKANJIWINDOW = 18, // 0x12 SM_MOUSEPRESENT = 19, // 0x13 SM_CYVSCROLL = 20, // 0x14 SM_CXHSCROLL = 21, // 0x15 SM_DEBUG = 22, // 0x16 SM_SWAPBUTTON = 23, // 0x17 SM_CXMIN = 28, // 0x1C SM_CYMIN = 29, // 0x1D SM_CXSIZE = 30, // 0x1E SM_CYSIZE = 31, // 0x1F SM_CXSIZEFRAME = 32, // 0x20 SM_CXFRAME = 32, // 0x20 SM_CYSIZEFRAME = 33, // 0x21 SM_CYFRAME = 33, // 0x21 SM_CXMINTRACK = 34, // 0x22 SM_CYMINTRACK = 35, // 0x23 SM_CXDOUBLECLK = 36, // 0x24 SM_CYDOUBLECLK = 37, // 0x25 SM_CXICONSPACING = 38, // 0x26 SM_CYICONSPACING = 39, // 0x27 SM_MENUDROPALIGNMENT = 40, // 0x28 SM_PENWINDOWS = 41, // 0x29 SM_DBCSENABLED = 42, // 0x2A SM_CMOUSEBUTTONS = 43, // 0x2B SM_SECURE = 44, // 0x2C SM_CXEDGE = 45, // 0x2D SM_CYEDGE = 46, // 0x2E SM_CXMINSPACING = 47, // 0x2F SM_CYMINSPACING = 48, // 0x30 SM_CXSMICON = 49, // 0x31 SM_CYSMICON = 50, // 0x32 SM_CYSMCAPTION = 51, // 0x33 SM_CXSMSIZE = 52, // 0x34 SM_CYSMSIZE = 53, // 0x35 SM_CXMENUSIZE = 54, // 0x36 SM_CYMENUSIZE = 55, // 0x37 SM_ARRANGE = 56, // 0x38 SM_CXMINIMIZED = 57, // 0x39 SM_CYMINIMIZED = 58, // 0x3A SM_CXMAXTRACK = 59, // 0x3B SM_CYMAXTRACK = 60, // 0x3C SM_CXMAXIMIZED = 61, // 0x3D SM_CYMAXIMIZED = 62, // 0x3E SM_NETWORK = 63, // 0x3F SM_CLEANBOOT = 67, // 0x43 SM_CXDRAG = 68, // 0x44 SM_CYDRAG = 69, // 0x45 SM_SHOWSOUNDS = 70, // 0x46 SM_CXMENUCHECK = 71, // 0x47 SM_CYMENUCHECK = 72, // 0x48 SM_SLOWMACHINE = 73, // 0x49 SM_MIDEASTENABLED = 74, // 0x4A SM_MOUSEWHEELPRESENT = 75, // 0x4B SM_XVIRTUALSCREEN = 76, // 0x4C SM_YVIRTUALSCREEN = 77, // 0x4D SM_CXVIRTUALSCREEN = 78, // 0x4E SM_CYVIRTUALSCREEN = 79, // 0x4F SM_CMONITORS = 80, // 0x50 SM_SAMEDISPLAYFORMAT = 81, // 0x51 SM_IMMENABLED = 82, // 0x52 SM_CXFOCUSBORDER = 83, // 0x53 SM_CYFOCUSBORDER = 84, // 0x54 SM_TABLETPC = 86, // 0x56 SM_MEDIACENTER = 87, // 0x57 SM_STARTER = 88, // 0x58 SM_SERVERR2 = 89, // 0x59 SM_MOUSEHORIZONTALWHEELPRESENT = 91, // 0x5B SM_CXPADDEDBORDER = 92, // 0x5C SM_DIGITIZER = 94, // 0x5E SM_MAXIMUMTOUCHES = 95, // 0x5F SM_REMOTESESSION = 0x1000, // 0x1000 SM_SHUTTINGDOWN = 0x2000, // 0x2000 SM_REMOTECONTROL = 0x2001, // 0x2001 SM_CONVERTABLESLATEMODE = 0x2003, SM_SYSTEMDOCKED = 0x2004, } // should handle in event SystemEvents.UserPreferenceChanging which e.Category == UserPreferenceCategory.General if (GetSystemMetrics(SystemMetric.SM_CONVERTABLESLATEMODE) == 0) { Debug.WriteLine("detected slate mode"); } else if (GetSystemMetrics(SystemMetric.SM_SYSTEMDOCKED) == 0) { Debug.WriteLine("detected docked mode"); } 修改键盘布局 ...