API 查找窗体句柄、发送消息

来源：互联网发布：淘宝外贸衣服哪里来的编辑：程序博客网时间：2024/06/16 15:50
//一个引用 using System.Runtime.InteropServices; //一些定义，放在例如public partial class Form1 : Form下          const int WM_GETTEXT = 0x000D;          const int WM_SETTEXT = 0x000C;          const int WM_CLICK = 0x00F5;          [DllImport("User32.dll", EntryPoint = "FindWindow")]          private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);          [DllImport("user32.dll", EntryPoint = "FindWindowEx")]          private static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);          [DllImport("User32.dll", EntryPoint = "SendMessage")]          private static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam); //下面的例子是针对一个弹出式web登录界面，你要用spy++找出你的登录窗口里的相关控件 void PopLogin()          {              tsslStatus.Text = "准备在弹出窗口登录......";              int retval = 0; //增加一个返回值用来判断操作是否成功              //下面的这些参数都可以用Spy++查到              string lpszParentClass = "#32770"; //整个窗口的类名              string lpszParentWindow = strWndName; //窗口标题              //string lpszClass = "Edit"; //需要查找的子窗口的类名，也就是输入框              string lpszClass_Submit = "Button"; //需要查找的Button的类名              string lpszName_Submit = "确定"; //需要查找的Button的标题              string text = "";              IntPtr ParenthWnd = new IntPtr(0);              IntPtr EdithWnd = new IntPtr(0);              IntPtr ip = new IntPtr(0);              //查到窗体，得到整个窗体              ParenthWnd = FindWindow(lpszParentClass, lpszParentWindow);              //等待5秒              int iSecCnt = 1;              while (ParenthWnd == IntPtr.Zero)              {                  if (iSecCnt > 5) return;                  tsslStatus.Text = "尝试登录......"+iSecCnt.ToString();                  Thread.Sleep(1000);                  ParenthWnd = FindWindow(lpszParentClass, lpszParentWindow);                  iSecCnt++;              }              //判断这个窗体是否有效              if (!ParenthWnd.Equals(IntPtr.Zero))              {                  EdithWnd = FindWindowEx(ParenthWnd, new IntPtr(0), "Edit", "");                  //得到User Name这个子窗体，并设置其内容                  EdithWnd = FindWindowEx(ParenthWnd, EdithWnd, "SysCredential", "");                  if (!EdithWnd.Equals(IntPtr.Zero))                  {                      //MessageBox.Show("sc");                      ip = EdithWnd;                      //得到Password这个子窗体，并设置其内容                      EdithWnd = FindWindowEx(ip, new IntPtr(0), "Edit", "");                      if (!EdithWnd.Equals(IntPtr.Zero))                      {                          text = strGPwd;                          SendMessage(EdithWnd, WM_SETTEXT, (IntPtr)0, text);                          retval++;                      }                      EdithWnd = FindWindowEx(ip, new IntPtr(0), "ComboBoxEx32", "");                      if (!EdithWnd.Equals(IntPtr.Zero))                      {                          //MessageBox.Show("cbe");                          ip = EdithWnd;                          EdithWnd = FindWindowEx(ip, new IntPtr(0), "ComboBox", "");                          if (!EdithWnd.Equals(IntPtr.Zero))                          {                              //MessageBox.Show("cb");                              ip = EdithWnd;                              EdithWnd = FindWindowEx(ip, new IntPtr(0), "Edit", "");                              if (!EdithWnd.Equals(IntPtr.Zero))                              {                                  text = strGAcnt;                                  //调用SendMessage方法设置其内容                                  SendMessage(EdithWnd, WM_SETTEXT, (IntPtr)0, text);                                  retval++;                              }                          }                      }                  }                  //得到Domain这个子窗体，并设置其内容                  //EdithWnd = FindWindowEx(ParenthWnd, EdithWnd, lpszClass, "");                  //if (!EdithWnd.Equals(IntPtr.Zero))                  //{                  //     text = this.tbDomain.Text.Trim();                  //     SendMessage(EdithWnd, WM_SETTEXT, (IntPtr)0, text);                  //     retval++;                  //}                  //得到Button这个子窗体，并触发它的Click事件                  EdithWnd = FindWindowEx(ParenthWnd, new IntPtr(0), lpszClass_Submit, lpszName_Submit);                  if (!EdithWnd.Equals(IntPtr.Zero))                  {                      SendMessage(EdithWnd, WM_CLICK, (IntPtr)0, "0");                      retval++;                  }              }              tsslStatus.Text = "尝试登录已完成。";              //return retval;          }
0 0