c#调用系统键盘（触摸键盘和屏幕键盘）

c#调用系统键盘（触摸键盘和屏幕键盘）

调用触摸键盘（win8及其以上有触摸键盘）

/// <summary>

/// 触控键盘

/// </summary>

public static class TouchKeyBoard

{

private const Int32 WM_MOVE = 0x0003;

[DllImport("User32.dll", SetLastError = true, CharSet = CharSet.Auto, EntryPoint = "PostMessage")]

private static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

[DllImport("User32.dll", SetLastError = true, CharSet = CharSet.Auto, EntryPoint = "FindWindow")]

private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("User32.dll", SetLastError = true, CharSet = CharSet.Auto, EntryPoint = "RegisterWindowMessage")]

private static extern int RegisterWindowMessage(string lpString);

private static readonly IntPtr HWND_TOP = new IntPtr(0); //将窗口置于Z序的顶部

private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1); //将窗口置于所有非顶层窗口之上。即使窗口未被激活窗口也

将保持顶级位置

private static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2); //不是顶部

层窗口组（依赖于pWndInsertAfter参数的设置）的顶部

private const UInt32 SWP_FRAMECHANGED = 0x0020;//向窗口发送一条WM_NCCALCSIZE消息，即使窗口的大小不会改变。如

果没有指定这个标志，则仅当窗口的大小发生变化时才发送WM_NCCALCSIZE消息

private const UInt32 SWP_SHOWWINDOW = 0x0040;//显示窗口

private const UInt32 SWP_HIDEWINDOW = 0x0080;//隐藏窗口

private const UInt32 SWP_NOCOPYBITS = 0x0100;// 废弃这个客户区的内容。如果没有指定这个参数，则客户区的有效内容将被

保存，

private const UInt32 SWP_NOOWNERZORDER = 0x0200;//不改变拥有者窗口在Z轴次序上的位置。

private const UInt32 SWP_NOSENDCHANGING = 0x0400;//防止窗口接收WM_WINDOWPOSCHANGING消息

private const UInt32 TOPMOST_FLAGS = SWP_NOMOVE | SWP_NOSIZE;