使用Windows API自动化QQ登录-优快云博客

可以用WINDOWS api函数实现。
下面的WINDIWS API引用部分的代码，放入 class 内部

[DllImport ( "user32.dll", EntryPoint = "FindWindow", SetLastError = true )]
private static extern IntPtr FindWindow( string lpClassName, string lpWindowName );//查找窗口句柄
[DllImport ( "user32.dll", EntryPoint = "FindWindowEx", SetLastError = true )]
private static extern IntPtr FindWindowEx( IntPtr hwndParent, uint hwndChildAfter, string lpszClass, string lpszWindow );//查找窗口内控件句柄
[DllImport ( "user32.dll", EntryPoint = "SendMessage", SetLastError = true, CharSet = CharSet.Auto )]
private static extern int SendMessage( IntPtr hwnd, uint wMsg, int wParam, int lParam );//发送消息
[DllImport ( "user32.dll", EntryPoint = "SetForegroundWindow", SetLastError = true )]
private static extern void SetForegroundWindow( IntPtr hwnd );// 设置窗口为激活状态

哈哈，现在可以开工了。我就用QQ的自动登录为列子
下面是你winfrom窗口的按钮事件：
private void button1_Click( object sender, EventArgs e )
{
const uint WM_SETTEXT = 0x000C;//设置文本框内容的消息
const uint BM_CLICK = 0xF5; //鼠标点击的消息，对于各种消息的数值，你还是得去查查API手册
IntPtr hwndCalc = FindWindow ( null, "QQ2011" ); //查找QQ2011的窗口句柄
if ( hwndCalc != IntPtr.Zero )//找到啦
{
IntPtr hwndLogin= FindWindowEx ( hwndCalc, 0, null, "安全登录" ); //获取登陆按钮的句柄
IntPtr hwndQ = FindWindowEx ( hwndCalc, 0, “ComboBox”, "" );  //获取QQ号码输入框的控件句柄
IntPtr hwndP = FindWindowEx ( hwndCalc, 0,"Edit", “” );  //获取密码输入框的控件句柄 SetForegroundWindow ( hwndCalc );    //将QQ窗口设置为激活
System.Threading.Thread.Sleep ( 1000 );   //暂停1秒让你看到效果
SendMessage ( hwndQ, WM_SETTEXT, TextBox1.Text, 0 );//发送文本框1里面的内容（QQ号啦）
System.Threading.Thread.Sleep ( 1000 );   //暂停1秒让你看到效果
SendMessage( hwndP, WM_SETTEXT, TextBox2.Text, 0 );//发送文本框2里面的内容（QQpassword）

System.Threading.Thread.Sleep ( 1000);   //暂停1秒让你看到效果
SendMessage ( hwndLogin, BM_CLICK, 0, 0 );//点击登录
}
else
{
MessageBox.Show ("没有启动 [QQ2011]");
}
}

转载于:https://www.cnblogs.com/yan1345/p/3504258.html