using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Management;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace SnPrintStampClient.Forms
{
public class VirtualKeyboardHelper
{
private const uint WS_VISIBLE = 0x10000000;
private const int GWL_STYLE = -16;
private const int WM_SYSCOMMAND = 0x0112;
private const uint SC_CLOSE = 0xF060;
private const int WS_DISABLED = 0x08000000;
private const int DWMWA_CLOAKED = 14;
private const string ApplicationFrameHostClassName = "ApplicationFrameWindow";
private const string CoreWindowClassName = "Windows.UI.Core.CoreWindow";
private const string TextInputApplicationCaption = "Microsoft Text Input Application";
/// <summary>
/// win10 虚拟键盘路径
/// </summary>
private const string Win10TabTipPath = @"C:\Program Files\Common Files\microsoft shared\ink\TabTip.exe";
/// <summary>
/// win7 虚拟键盘路径
/// </summary>
private const string Win7OskPath = @"C:\WINDOWS\system32\osk.exe";
/// <summary>
/// 虚拟键盘 窗口名称
/// </summary>
private const string TabTipWindowClassName = "IPTIP_Main_Window";
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll", EntryPoint = "FindWindowEx")]
private static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass,
string lpszWindow);
[DllImport("user32.dll", EntryPoint = "GetWindowLong")]
private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern bool PostMessage(IntPtr hWnd, int msg, uint wParam, uint lParam);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool Wow64DisableWow64FsRedirection(ref IntPtr ptr);
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool Wow64RevertWow64FsRedirection(IntPtr ptr);
[DllImport("user32.dll", EntryPoint = "GetDesktopWindow", SetLastError = false)]
private static extern IntPtr GetDesktopWindow();
[DllImport("dwmapi.dll", EntryPoint = "DwmGetWindowAttribute")]
private static extern int DwmGetWindowAttribute(IntPtr intPtr, int dwAttribute, out int pvAttribute,
uint cbAttribute);
/// <summary>
/// 判断键盘是否连接
/// </summary>
/// <returns></returns>
public static bool IsKeyboardAttached()
{
try
{
ManagementObjectSearcher searcher =
new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_Keyboard");
int devCount = 0;
foreach (ManagementObject obj in searcher.Get())
{
if (obj["Status"].ToString().Contains("OK")) // if device is ready
{
//surface测试时发现，HID设备，不是键盘，比较特殊
if (!obj["Description"].ToString().Contains("HID Keyboard Device"))
{
devCount++;
}
}
}
return devCount > 0;
}
catch (Exception)
{
return false;
}
}
/// <summary>
/// 打开虚拟键盘，目前支持win7 64位，win10 64位，exe编译为x86。
/// </summary>
public static void ShowVirtualKeyboard()
{
//+------------------------------------------------------------------------------+
//| | PlatformID | Major version | Minor version |
//+------------------------------------------------------------------------------+
//| Windows 95 | Win32Windows | 4 | 0 |
//| Windows 98 | Win32Windows | 4 | 10 |
//| Windows Me | Win32Windows | 4 | 90 |
//| Windows NT 4.0 | Win32NT | 4 | 0 |
//| Windows 2000 | Win32NT | 5 | 0 |
//| Windows XP | Win32NT | 5 | 1 |
//| Windows 2003 | Win32NT | 5 | 2 |
//| Windows Vista | Win32NT | 6 | 0 |
//| Windows 2008 | Win32NT | 6 | 0 |
//| Windows 7 | Win32NT | 6 | 1 |
//| Windows 2008 R2 | Win32NT | 6 | 1 |
//| Windows 8 | Win32NT | 6 | 2 |
//| Windows 8.1 | Win32NT | 6 | 3 |
//+------------------------------------------------------------------------------+
//| Windows 10 | Win32NT | 10 | 0 |
try
{
var isWin7 = Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor == 1;
var isWin8OrWin10 =
Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor == 2;
var isWin10 = Environment.OSVersion.Version.Major == 10 && Environment.OSVersion.Version.Minor == 0;
if (isWin7)
{
//win7
ShowWin7VirtualKeyboard();
}
else if (isWin8OrWin10 || isWin10)
{
//win10
ShowWin10VirtualKeyboard();
}
}
catch (Exception)
{
// ignored
}
}
/// <summary>
/// 关闭虚拟键盘
/// </summary>
public void CloseVirtualKeyboard()
{
var touchhWnd = FindWindow("IPTip_Main_Window", null);
if (touchhWnd == IntPtr.Zero)
{
return;
}
PostMessage(touchhWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
}
private static void ShowWin7VirtualKeyboard()
{
if (!Environment.Is64BitProcess && Environment.Is64BitOperatingSystem)
{
//32位程序 运行在64位系统上，打开32位程序，需要禁用文件重定向
var ptr = new IntPtr();
var isWow64FsRedirectionDisabled = Wow64DisableWow64FsRedirection(ref ptr);
Process.Start(Win7OskPath);
if (isWow64FsRedirectionDisabled)
{
Wow64RevertWow64FsRedirection(ptr);
}
}
else if (Environment.Is64BitProcess && Environment.Is64BitOperatingSystem)
{
Process.Start(Win7OskPath);
}
}
private static void ShowWin10VirtualKeyboard()
{
if (!IsTabTipProcessPresent())
{
Process.Start(Win10TabTipPath);
while (!IsValidHandle(FindWindow("IPTIP_Main_Window", "")))
{
Thread.Sleep(100);
}
}
//判断可见性
if (!IsWin10OnScreenKeyboardVisible())
{
ShowByCom();
}
}
private static bool IsWin10OnScreenKeyboardVisible()
{
var handle = FindWindow(TabTipWindowClassName, "");
if (!IsValidHandle(handle))
{
return false;
}
var isVisible = IsWindowVisibleByHandle(handle);
if (isVisible.HasValue)
{
return isVisible.Value;
}
// hard way
var textInputHandle = FindTextInputWindow();
return IsValidHandle(textInputHandle);
}
private static IntPtr FindTextInputWindow()
{
var lastProbed = IntPtr.Zero;
do
{
lastProbed = FindWindowEx(IntPtr.Zero, lastProbed, ApplicationFrameHostClassName, null);
if (IsValidHandle(lastProbed))
{
var textInput = FindWindowEx(lastProbed, IntPtr.Zero, CoreWindowClassName,
TextInputApplicationCaption);
return textInput;
}
} while (IsValidHandle(lastProbed));
return IntPtr.Zero;
}
private static bool? IsWindowVisibleByHandle(IntPtr handle)
{
var style = GetWindowLong(handle, GWL_STYLE);
//Console.WriteLine( "Style {0:X8}", style );
// if is disabled - not visible
if ((style & WS_DISABLED) != 0)
{
return false;
}
// if has visible style - visible :)
if ((style & WS_VISIBLE) != 0)
{
return true;
}
// DWM Window can be cloaked
// see https://social.msdn.microsoft.com/Forums/vstudio/en-US/f8341376-6015-4796-8273-31e0be91da62/difference-between-actually-visible-and-not-visiblewhich-are-there-but-we-cant-see-windows-of?forum=vcgeneral
if (DwmGetWindowAttribute(handle, DWMWA_CLOAKED, out var cloaked, 4) == 0)
{
if (cloaked != 0)
{
return false;
}
}
// undefined
return null;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static bool IsValidHandle(IntPtr handle)
{
// if (?:) will be eliminated by jit
return IntPtr.Size == 4
? handle.ToInt32() > 0
: handle.ToInt64() > 0;
}
private static bool IsTabTipProcessPresent()
{
var handle = FindWindow(TabTipWindowClassName, "");
return IntPtr.Size == 4
? handle.ToInt32() > 0
: handle.ToInt64() > 0;
}
private static void ShowByCom()
{
ITipInvocation instance = null;
try
{
instance = (ITipInvocation)Activator.CreateInstance(ComTypes.TipInvocationType);
instance.Toggle(GetDesktopWindow());
}
finally
{
if (!ReferenceEquals(instance, null))
{
Marshal.ReleaseComObject(instance);
}
}
}
}
[ComImport]
[Guid("37c994e7-432b-4834-a2f7-dce1f13b834b")]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
internal interface ITipInvocation
{
void Toggle(IntPtr hwnd);
}
internal static class ComTypes
{
internal static readonly Guid ImmersiveShellBrokerGuid;
internal static readonly Type ImmersiveShellBrokerType;
internal static readonly Guid TipInvocationGuid;
internal static readonly Type TipInvocationType;
static ComTypes()
{
TipInvocationGuid = Guid.Parse("4ce576fa-83dc-4F88-951c-9d0782b4e376");
TipInvocationType = Type.GetTypeFromCLSID(TipInvocationGuid);
ImmersiveShellBrokerGuid = new Guid("228826af-02e1-4226-a9e0-99a855e455a6");
ImmersiveShellBrokerType = Type.GetTypeFromCLSID(ImmersiveShellBrokerGuid);
}
}
}