WPF 中模拟键盘和鼠标操作

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转载：http://www.cnblogs.com/sixty/archive/2009/08/09/1542210.html

更多经典文章：http://www.qqpjzb.cn/65015.html

其实SendKeys类提供的方法蛮好用的,可惜的是WPF中不能用了,说是WPF的消息循环方式改成了Dispatcher,所以直接调用System.Windows.Forms.SendKeys.Send()方法会报错. 不过没关系, 至少有use32的SendInput可用,通过P/Invoke方式,我们可以模拟键盘或鼠标操作.

定义是这样的:

[DllImport("user32.dll", SetLastError = true)]
internal static extern int SendInput(int nInputs, ref INPUT mi, int cbSize);

其中的INPUT结构表示一个键盘或鼠标操作:

[StructLayout(LayoutKind.Sequential)]
internal struct INPUT
{
internal int type;
internal INPUTUNION union;
};
[StructLayout(LayoutKind.Explicit)]
internal struct INPUTUNION
{
[FieldOffset(0)]
internal MOUSEINPUT mouseInput;
[FieldOffset(0)]
internal KEYBDINPUT keyboardInput;
};
[StructLayout(LayoutKind.Sequential)]
internal struct MOUSEINPUT
{
internal int dx;
internal int dy;
internal int mouseData;
internal int dwFlags;
internal int time;
internal IntPtr dwExtraInfo;
};
[StructLayout(LayoutKind.Sequential)]
internal struct KEYBDINPUT
{
internal short wVk;
internal short wScan;
internal int dwFlags;
internal int time;
internal IntPtr dwExtraInfo;
};
[Flags]
internal enum SendMouseInputFlags
{
Move = 0x0001,
LeftDown = 0x0002,
LeftUp = 0x0004,
RightDown = 0x0008,
RightUp = 0x0010,
MiddleDown = 0x0020,
MiddleUp = 0x0040,
XDown = 0x0080,
XUp = 0x0100,
Wheel = 0x0800,
Absolute = 0x8000,
};