编程鼠标点击在另一个窗口 [英] programmatically mouse click in another window

问题描述

是否有可能以编程方式单击另一个窗口的位置不移动鼠标至该位置，即使窗口是不顶？我想一个样的信息发送到另一个窗口来模拟一个位置点击鼠标。

Is it possible to click programmatically a location in another window without moving the mouse to that location and even if the window is not on-top? I want to send a kind of message to another window to simulate a mouse click on a location.

我试着用PostMessage的做到这一点：

I tried to accomplish this with PostMessage:

PostMessage(WindowHandle, 0x201, IntPtr.Zero, CreateLParam(300,300));
PostMessage(WindowHandle, 0x202, IntPtr.Zero, CreateLParam(300,300));

我做了CreateLParam功能是这样的：

I made the CreateLParam function this way:

private static IntPtr CreateLParam(int LoWord, int HiWord)
{
     return (IntPtr)((HiWord << 16) | (LoWord & 0xffff));
}

的问题是，在窗口被锁定在他的位置。我认为，我的应用程序点击（1,1）坐标。一些可以帮助我解决这个问题呢？

The problem is that the window gets locked on his location. I think that my application clicks on the (1,1) coordinate. Can some on help me with this problem?

编辑：
这是PostMessage的：

This is PostMessage:

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool PostMessage(IntPtr WindowHandle, int Msg, IntPtr wParam, IntPtr lParam);

和0x201和0x202分别是WM_LBUTTONDOWN WM_LBUTTONUP和

And 0x201 and 0x202 are WM_LBUTTONDOWN and WM_LBUTTONUP respectively.

推荐答案

您不能这样做，通过发送邮件，而是使用SendInput的Windows API。

You can't do that by sending messages, instead use SendInput Windows API.

调用方法ClickOnPoint，这是从表格单击事件的例子，所以 this.handle 的形式处理，注意，这些都是客户坐标上的窗口女巫手柄送，您可以轻松地改变这一点，送屏幕坐标，在这种情况下，你不需要办理或低于ClientToScreen电话。

Call method ClickOnPoint, this is an example from form click event, so this.handle is form handle, note that these are client coordinates on window witch handle is send, you can easily change this and send screen coordinates, and in that case you don't need handle or ClientToScreen call below.

ClickOnPoint(this.Handle, new Point(375, 340));

更新：使用SendInput现在，TNX汤姆

UPDATE: using SendInput now, tnx Tom.

BTW。我用仅用于本示例声明，任何东西更是有很好的图书馆：的Windows模拟输入（C＃SendInput包装 - 模拟键盘和鼠标）

btw. I used only declarations needed for this sample, for anything more there is a nice library : Windows Input Simulator (C# SendInput Wrapper - Simulate Keyboard and Mouse)

  public class ClickOnPointTool
  {

    [DllImport("user32.dll")]
    static extern bool ClientToScreen(IntPtr hWnd, ref Point lpPoint);

    [DllImport("user32.dll")]
    internal static extern uint SendInput(uint nInputs, [MarshalAs(UnmanagedType.LPArray), In] INPUT[] pInputs,  int cbSize);

#pragma warning disable 649
    internal struct INPUT
    {
      public UInt32 Type;
      public MOUSEKEYBDHARDWAREINPUT Data;
    }

    [StructLayout(LayoutKind.Explicit)]
    internal struct MOUSEKEYBDHARDWAREINPUT
    {
      [FieldOffset(0)]
      public MOUSEINPUT Mouse;
    }

    internal struct MOUSEINPUT
    {
      public Int32 X;
      public Int32 Y;
      public UInt32 MouseData;
      public UInt32 Flags;
      public UInt32 Time;
      public IntPtr ExtraInfo;
    }

#pragma warning restore 649


    public static void ClickOnPoint(IntPtr wndHandle , Point clientPoint)
    {
      var oldPos = Cursor.Position;

      /// get screen coordinates
      ClientToScreen(wndHandle, ref clientPoint);

      /// set cursor on coords, and press mouse
      Cursor.Position = new Point(clientPoint.X, clientPoint.Y);

      var inputMouseDown = new INPUT();
      inputMouseDown.Type = 0; /// input type mouse
      inputMouseDown.Data.Mouse.Flags = 0x0002; /// left button down

      var inputMouseUp = new INPUT();
      inputMouseUp.Type = 0; /// input type mouse
      inputMouseUp.Data.Mouse.Flags = 0x0004; /// left button up

      var inputs = new INPUT[] { inputMouseDown, inputMouseUp };
      SendInput((uint)inputs.Length, inputs, Marshal.SizeOf(typeof(INPUT)));

      /// return mouse 
      Cursor.Position = oldPos;
    }

  }

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