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5月22日
用Mouse_event（）來控制鼠標操作
在自動化測試的開發(fā)中，有一些控件的ID是很難找到的，所以有些時候，我們直接設(shè)置鼠標的位置，然后是用click事件，會收到很好的效果。在Windows API中有個mouse_event函數(shù)為我們準備好了這一切。
這個函數(shù)在user32.dll這個庫文件里面。我們可以在C:/WINDOWS/system32（XP系統(tǒng)）這個目錄下找到這個文件，他是系統(tǒng)自帶的。 我們以C#直接調(diào)用這個文件中的API為例子來說下怎么進行鼠標操作，首先在我們C#中聲明引用，如果是一個基于From的程序，這個聲明的位置寫在你的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);
參數(shù) 意義
dwFlags Long，下表中標志之一或它們的組合
dx，dy Long，根據(jù)MOUSEEVENTF_ABSOLUTE標志，指定x，y方向的絕對位置或相對位置
cButtons Long，沒有使用
dwExtraInfo Long，沒有使用
dwFlags常數(shù) 意義
const int MOUSEEVENTF_MOVE = 0x0001; 移動鼠標
const int MOUSEEVENTF_LEFTDOWN = 0x0002; 模擬鼠標左鍵按下
const int MOUSEEVENTF_LEFTUP = 0x0004; 模擬鼠標左鍵抬起
const int MOUSEEVENTF_RIGHTDOWN = 0x0008; 模擬鼠標右鍵按下
const int MOUSEEVENTF_RIGHTUP = 0x0010; 模擬鼠標右鍵抬起
const int MOUSEEVENTF_MIDDLEDOWN = 0x0020; 模擬鼠標中鍵按下
const int MOUSEEVENTF_MIDDLEUP = 0x0040; 模擬鼠標中鍵抬起
const int MOUSEEVENTF_ABSOLUTE = 0x8000; 標示是否采用絕對坐標
程序中我們直接調(diào)用mouse_event函數(shù)就可以了
mouse_event(MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE, 500, 500, 0, 0);
1、這里是鼠標左鍵按下和松開兩個事件的組合即一次單擊：
mouse_event (MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0 )
2、模擬鼠標右鍵單擊事件：
mouse_event (MOUSEEVENTF_RIGHTDOWN | MOUSEEVENTF_RIGHTUP, 0, 0, 0, 0 )
3、兩次連續(xù)的鼠標左鍵單擊事件 構(gòu)成一次鼠標雙擊事件：
mouse_event (MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0 )
mouse_event (MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0 )
4、使用絕對坐標
MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE, 500, 500, 0, 0
需要說明的是，如果沒有使用MOUSEEVENTF_ABSOLUTE，函數(shù)默認的是相對于鼠標當(dāng)前位置的點，如果dx，和dy，用0，0表示，這函數(shù)認為是當(dāng)前鼠標所在的點。５、直接設(shè)定絕對坐標并單擊
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分別是你要點擊的點的橫坐標和縱坐標
C# .NET中如何使用GetCursorPos函數(shù) 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;
}
}
}
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