在自动化测试的开发中，有一些控件的ID是很难找到的，所以有些时候，我们直接设置鼠标的位置，然后是用click事件，会收到很好的效果。在Windows API中有个mouse_event函数为我们准备好了这一切。
这个函数在user32.dll这个库文件里面。我们可以在C:/WINDOWS/system32（XP系统）这个目录下找到这个文件，他是系统自带的。 我们以C#直接调用这个文件中的API为例子来说下怎么进行鼠标操作，首先在我们C#中声明引用，如果是一个基于From的程序，这个声明的位置写在你的From class就可以了 [System.Runtime.InteropServices.DllImport("user32")] private static extern int mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);
参数 意义 dwFlags Long，下表中标志之一或它们的组合 dx，dy Long，根据MOUSEEVENTF_ABSOLUTE标志，指定x，y方向的绝对位置或相对位置 cButtons Long，没有使用 dwExtraInfo Long，没有使用
dwFlags常数 意义
const int MOUSEEVENTF_MOVE = 0x0001; 移动鼠标 const int MOUSEEVENTF_LEFTDOWN = 0x0002; 模拟鼠标左键按下 const int MOUSEEVENTF_LEFTUP = 0x0004; 模拟鼠标左键抬起 const int MOUSEEVENTF_RIGHTDOWN = 0x0008; 模拟鼠标右键按下 const int MOUSEEVENTF_RIGHTUP = 0x0010; 模拟鼠标右键抬起 const int MOUSEEVENTF_MIDDLEDOWN = 0x0020; 模拟鼠标中键按下 const int MOUSEEVENTF_MIDDLEUP = 0x0040; 模拟鼠标中键抬起 const int MOUSEEVENTF_ABSOLUTE = 0x8000; 标示是否采用绝对坐标
程序中我们直接调用mouse_event函数就可以了 mouse_event(MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE, 500, 500, 0, 0);
1、这里是鼠标左键按下和松开两个事件的组合即一次单击： mouse_event (MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0 )
2、模拟鼠标右键单击事件： mouse_event (MOUSEEVENTF_RIGHTDOWN | MOUSEEVENTF_RIGHTUP, 0, 0, 0, 0 )
3、两次连续的鼠标左键单击事件 构成一次鼠标双击事件： mouse_event (MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0 ) mouse_event (MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0 )
4、使用绝对坐标 MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE, 500, 500, 0, 0
需要说明的是，如果没有使用MOUSEEVENTF_ABSOLUTE，函数默认的是相对于鼠标当前位置的点，如果dx，和dy，用0，0表示，这函数认为是当前鼠标所在的点。５、直接设定绝对坐标并单击 mouse_event(MOUSEEVENTF_LEFTDOWN, X * 65536 / 1024, Y * 65536 / 768, 0, 0); mouse_event(MOUSEEVENTF_LEFTUP, X * 65536 / 1024, Y * 65536 / 768, 0, 0); 其中X，Y分别是你要点击的点的横坐标和纵坐标
C# .NET中如何使用GetCursorPos函数 例程
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices;
namespace CursorPosition { public partial class frmMain : Form { // We need to use unmanaged code [DllImport("user32.dll")] // GetCursorPos() makes everything possible static extern bool GetCursorPos(ref Point lpPoint); // Variable we will need to count the traveled pixels static protected long totalPixels = 0; static protected int currX; static protected int currY; static protected int diffX; static protected int diffY;
public frmMain() { InitializeComponent(); }
private void tmrDef_Tick(object sender, EventArgs e) { // New point that will be updated by the function with the current coordinates Point defPnt = new Point(); // Call the function and pass the Point, defPnt GetCursorPos(ref defPnt); // Now after calling the function, defPnt contains the coordinates which we can read lblCoordX.Text = "X = " + defPnt.X.ToString(); lblCoordY.Text = "Y = " + defPnt.Y.ToString(); // If the cursor has moved at all if (diffX != defPnt.X | diffY != defPnt.Y) { // Calculate the distance of movement (in both vertical and horizontal movement) diffX = (defPnt.X - currX); diffY = (defPnt.Y - currY); // The difference will be negative if the cursor was moved left or up // and if it is so, make the number positive if (diffX < 0) { diffX *= -1; } if (diffY < 0) { diffY *= -1; } // Add to the "pixels traveled" counter totalPixels += diffX + diffY; // And display inside a label lblTravel.Text = "You have traveled " + totalPixels + " pixels"; } // We need this to see the difference of pixels between two mouse movements currX = defPnt.X; currY = defPnt.Y; }
private void btnReset_Click(object sender, EventArgs e) { totalPixels = 0; } } }
