以编程方式鼠标单击另一个窗口

Posted 2021-04-11

是否可以在不将鼠标移动到该位置的情况下以编程方式单击另一个窗口中的位置，即使窗口不在顶部？我想将一种消息发送到另一个窗口以模拟鼠标单击某个位置。

我试图用PostMessage完成这个：

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

我用这种方式创建了CreateLParam函数：

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

问题是窗口被锁定在他的位置。我认为我的应用程序点击了（1,1）坐标。有人可以帮我解决这个问题吗？

编辑：这是PostMessage：

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

0x201和0x202分别是WM_LBUTTONDOWN和WM_LBUTTONUP。

答案

您不能通过发送消息来执行此操作，而是使用SendInput Windows API。

调用方法ClickOnPoint，这是一个表单点击事件的例子，所以this.handle是表单句柄，注意这些是窗口女巫句柄发送的客户端坐标，你可以轻松改变这个并发送屏幕坐标，在这种情况下你不要需要处理或下面的ClientToScreen调用。

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

更新：现在使用SendInput，tnx Tom。

顺便说一句。我只使用了此示例所需的声明，因为还有一个很好的库：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;
    }

  }

另一答案

我在过去发现了一种向Windows Media Player发送消息的方法，所以我用它来模拟我想要的应用程序中的点击！

使用this class（下面的代码）找到窗口并发送你想要的消息！

using System;
using System.Runtime.InteropServices;

namespace Mouse_Click_Simulator
{
    /// <summary>
    /// Summary description for Win32.
    /// </summary>
    public class Win32
    {
        // The WM_COMMAND message is sent when the user selects a command item from 
        // a menu, when a control sends a notification message to its parent window, 
        // or when an accelerator keystroke is translated.
        public const int WM_KEYDOWN = 0x100;
        public const int WM_KEYUP = 0x101;
        public const int WM_COMMAND = 0x111;
        public const int WM_LBUTTONDOWN = 0x201;
        public const int WM_LBUTTONUP = 0x202;
        public const int WM_LBUTTONDBLCLK = 0x203;
        public const int WM_RBUTTONDOWN = 0x204;
        public const int WM_RBUTTONUP = 0x205;
        public const int WM_RBUTTONDBLCLK = 0x206;

        // The FindWindow function retrieves a handle to the top-level window whose
        // class name and window name match the specified strings.
        // This function does not search child windows.
        // This function does not perform a case-sensitive search.
        [DllImport("User32.dll")]
        public static extern int FindWindow(string strClassName, string strWindowName);

        // The FindWindowEx function retrieves a handle to a window whose class name 
        // and window name match the specified strings.
        // The function searches child windows, beginning with the one following the
        // specified child window.
        // This function does not perform a case-sensitive search.
        [DllImport("User32.dll")]
        public static extern int FindWindowEx(
            int hwndParent, 
            int hwndChildAfter, 
            string strClassName, 
            string strWindowName);


        // The SendMessage function sends the specified message to a window or windows. 
        // It calls the window procedure for the specified window and does not return
        // until the window procedure has processed the message. 
        [DllImport("User32.dll")]
        public static extern Int32 SendMessage(
            int hWnd,               // handle to destination window
            int Msg,                // message
            int wParam,             // first message parameter
            [MarshalAs(UnmanagedType.LPStr)] string lParam); // second message parameter

        [DllImport("User32.dll")]
        public static extern Int32 SendMessage(
            int hWnd,               // handle to destination window
            int Msg,                // message
            int wParam,             // first message parameter
            int lParam);            // second message parameter
    }
}

例如：

 Win32.SendMessage(iHandle, Win32.WM_LBUTTONDOWN, 0x00000001, 0x1E5025B);

我创建的Here's My Application Source Code在特定时间间隔内自动点击“BlueStacks”应用程序！

对于FindWindow，wParam，lParam等，你可以随时问我怎么做！这不是太难:);）希望它有所帮助！ :)