.net中模拟键盘和鼠标操作

周银辉

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,

};

关于这些方法或结构的定义在http://www.pinvoke.net/index.aspx 这个网站上可以查找得到(但不保证百分百靠谱)

下面这个代码文件做了一个很好的包装,可以下载后参考:

Simulation.zip

如何使用呢?

很简单, 要敲一个键, 比如回车:

Keyboard.Press(Key.Enter);

Keyboard.Release(Key.Enter);




要敲一个组合键:比如Alt+F4


Keyboard.Press(Key.LeftAlt);

Keyboard.Press(Key.F4);

Keyboard.Release(Key.LeftAlt);

Keyboard.Release(Key.F4);

要敲一段文字:


Keyboard.Type("notepad");

鼠标与之类似,比如:


Mouse.MoveTo(new System.Drawing.Point(x, y));

Mouse.Click(MouseButton.Right);