C#操作窗口类(句柄操作).doc

C#写个类操作窗口（句柄操作）实现过程：过程一：找到当前鼠标位置的句柄您的使用2个WinAPI（俺喜欢自己封装下来用）：View Code DllImport(user32.dll, EntryPoint = GetCursorPos) public static extern bool GetCursorPos(out Point pt); DllImport(user32.dll, EntryPoint = WindowFromPoint) public static extern IntPtr WindowFromPoint(Point pt); /鼠标位置的坐标 public static Point GetCursorPosPoint() Point p = new Point(); if (GetCursorPos(out p) return p; return default(Point); / / 找到句柄 / / 坐标 / public static IntPtr GetHandle(Point p) return WindowFromPoint(p); 过程二：改变窗口的Text您的使用1个WinAPI：View Code DllImport(user32.dll, EntryPoint = SendMessage) private static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam); / / 给窗口发送内容 / / 句柄 / 要发送的内容 public static void SetText(IntPtr hWnd, string lParam) SendMessage(hWnd, WM_SETTEXT, IntPtr.Zero, lParam); private const int WM_SETTEXT = 0x000C;通过这个方法就能改变Text的值了。思考：如果俺把这个窗口的句柄记录下来，下次不用鼠标获取，直接就能改变值不蛮好的嘛。例如：我有个桌面系统老叫我输入用户名，密码。我记录用户名和密码的窗口句柄，然后改变他们的输入值，这样多省事。（只是举例，不考虑安全性）问题：你会告诉我，窗口句柄的每次重建会变的呀，咋办。回答：类名不变呀。过程三：您的准备一些工具吧，例如：句柄找类名呀，类名找句柄什么的等等，下面会用到一些WinAPIView Code DllImport(user32.dll, EntryPoint = FindWindow) private static extern IntPtr FindWindow(string IpClassName, string IpWindowName); DllImport(user32.dll, EntryPoint = FindWindowEx) private static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); DllImport(user32.dll, EntryPoint = GetParent) public static extern IntPtr GetParent(IntPtr hWnd); DllImport(user32.dll, CharSet = CharSet.Auto) public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount); / / 找到句柄 / / 类名 / public static IntPtr GetHandle(string IpClassName) return FindWindow(IpClassName, null); / / 子窗口句柄 / / 父窗口句柄 / 前一个同目录级同名窗口句柄 / 类名 / public static IntPtr GetChildHandle(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass) return FindWindowEx(hwndParent, hwndChildAfter, lpszClass, null); / / 全部子窗口句柄 / / 父窗口句柄 / 类名 / public static List GetChildHandles(IntPtr hwndParent, string className) List resultList = new List(); for (IntPtr hwndClient = GetChildHandle(hwndParent, IntPtr.Zero, className); hwndClient != IntPtr.Zero; hwndClient = GetChildHandle(hwndParent, hwndClient, className) resultList.Add(hwndClient); return resultList; / / 找类名 / / 句柄 / public static string GetClassName(IntPtr hWnd) StringBuilder lpClassName = new StringBuilder(128); if (GetClassName(hWnd, lpClassName, lpClassName.Capacity) = 0) throw new Exception(not found IntPtr!); return lpClassName.ToString(); 思考：遍历桌面上所有的窗口，然后找类名，然后改他的Text，扯淡嘛,相同的类名太多了，找毛呀。实现：不仅记录类名，而且记录类名在父窗口出现的位置，然后通过桌面一层层找下来，最后找到这个句柄。（虽然不是太准，但是一般的还是能解决了，如果你有什么好方式一起研究）。过程四：实现一个WinHWND的类，可以把他的规则，他的父窗口类名，以及在父窗口中同类名出现的顺序记录下来，然后通过这些记录的信息还原句柄。View Code public class WinHWND public IntPtr HWND get; set; public string ClassName get; set; public WinHWND Parent get; set; public int InParentSequence get; set; private WinHWND() public WinHWND(IntPtr hWnd) this.HWND = hWnd; this.ClassName = GetClassName(); this.Parent = GetParent(); this.InParentSequence = GetInParentSequence(); private string GetClassName() return WinAPI.GetClassName(this.HWND); private WinHWND GetParent() if (WinAPI.GetParent(this.HWND) = null) throw new Exception(not found IntPtr!); if (WinAPI.GetParent(this.HWND) = IntPtr.Zero) return null; return new WinHWND(WinAPI.GetParent(this.HWND); private int GetInParentSequence() IntPtr IntprtParent = this.Parent = null ? IntPtr.Zero : this.Parent.HWND; return WinAPI.GetChildHandles(IntprtParent, this.ClassName).IndexOf(this.HWND); public override string ToString() StringBuilder result = new StringBuilder(); for (WinHWND winHandle = this; winHandle != null; winHandle = winHandle.Parent) result.Append(string.Format(0:1;, Escape(winHandle.ClassName), winHandle.InParentSequence.ToString(); if (winHandle.InParentSequence = -1) break; return result.ToString().TrimEnd(;); private static string GetBaseMark(string sMark) string sMarks = sMark.Split(;); return sMarkssMarks.Length - 1.Split(:)0; private static string GetChildMarks(string sMark) string sMarks = sMark.Split(;); string sChildMarks = new stringsMarks.Length - 1; for (int i = 0; i sChildMarks.Length; i + ) sChildMarksi = sMarksi ; return sChildMarks; /我一直觉得这段写很丑陋，谁能帮帮我改改 public static WinHWND GetWinHWND(string sMark) List baseHwnds = WinAPI.GetChildHandles(IntPtr.Zero, GetBaseMark(sMark); string sChildMarks = GetChildMarks(sMark); /由于主窗口在桌面出现所以很可能同名，所以要看看他的儿子和孙子.是不是都匹配 foreach (IntPtr baseHwnd in baseHwnds) IntPtr handle = baseHwnd; for (int i = sChildMarks.Length - 1; i = 0; i-) string sChildMark = sChildMarksi.Split(:); try handle = WinAPI.GetChildHandles(handle, UnEscape(sChildMark0)int.Parse(sChildMark1); catch break; if (i = 0) return new WinHWND(handle); continue; return null; #region 转义 private static string Escape(string arg) return arg.Replace(:, :).Replace(;,;); private static string UnEscape(string arg) return arg.Replace(:, :).Replace(;, ;); #endregion public static WinHWND GetWinHWND() return new WinHWND(WinAPI.GetHandle(WinAPI.GetCursorPosPoint(); 上全部代码，里面加了窗口的部分属性，扩展其他的属性，自己发挥吧，就是搞WinAPIView Code using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Runtime.InteropServices;using System.Drawing;using System.Collections;namespace InformationCollectionDataFill public class WinAPI #region WinodwsAPI DllImport(user32.dll, EntryPoint = FindWindow) private static extern IntPtr FindWindow(string IpClassName, string IpWindowName); 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); DllImport(user32.dll, EntryPoint = GetParent) public static extern IntPtr GetParent(IntPtr hWnd); DllImport(user32.dll, EntryPoint = GetCursorPos) public static extern bool GetCursorPos(out Point pt); DllImport(user32.dll, EntryPoint = WindowFromPoint, CharSet = CharSet.Auto, ExactSpelling = true) public static extern IntPtr WindowFromPoint(Point pt); DllImport(user32.dll, CharSet = CharSet.Auto) public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount); DllImport(user32.dll, CharSet = CharSet.Auto) public static extern int GetWindowText(IntPtr hWnd, Out, MarshalAs(UnmanagedType.LPTStr) StringBuilder lpString, int nMaxCount); DllImport(user32.dll, CharSet = CharSet.Auto) public static extern int GetWindowRect(IntPtr hwnd, ref Rectangle rc); DllImport(user32.dll, CharSet = CharSet.Auto) public static extern int GetClientRect(IntPtr hwnd, ref Rectangle rc); DllImport(user32.dll, CharSet = CharSet.Auto) public static extern int MoveWindow(IntPtr hwnd, int x, int y, int nWidth, int nHeight, bool bRepaint); DllImport(user32.dll, CharSet = CharSet.Auto, SetLastError = true, ExactSpelling = true) public static extern int ScreenToClient(IntPtr hWnd, ref Rectangle rect); #endregion #region 封装API方法 / / 找到句柄 / / 类名 / public static IntPtr GetHandle(string IpClassName) return FindWindow(IpClassName, null); / / 找到句柄 / / 坐标 / public static IntPtr GetHandle(Point p) return WindowFromPoint(p); /鼠标位置的坐标 public static Point GetCursorPosPoint() Point p = new Point(); if (GetCursorPos(out p) return p; return default(Point); / / 子窗口句柄 / / 父窗口句柄 / 前一个同目录级同名窗口句柄 / 类名 / public static IntPtr GetChildHandle(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass) return FindWindowEx(hwndParent, hwndChildAfter, lpszClass, null); / / 全部子窗口句柄 / / 父窗口句柄 / 类名 / public static List GetChildHandles(IntPtr hwndParent, string className) List resultList = new List(); for (IntPtr hwndClient = GetChildHandle(hwndParent, IntPtr.Zero, className); hwndClient != IntPtr.Zero; hwndClient = GetChildHandle(hwndParent, hwndClient, className) resultList.Add(hwndClient); return resultList; / / 给窗口发送内容 / / 句柄 / 要发送的内容 public static void SetText(IntPtr hWnd, string lParam) SendMessage(hWnd, WM_SETTEXT, IntPtr.Zero, lParam); private const int WM_SETTEXT = 0x000C; / / 获得窗口内容或标题 / / 句柄 / public static string GetText(IntPtr hWnd) StringBuilder result = new StringBuilder(128); GetWindowText(hWnd, result, result.Capacity); return result.ToString(); / / 找类名 / / 句柄 / public static string GetClassName(IntPtr hWnd) StringBuilder lpClassName = new StringBuilder(128); if (GetClassName(hWnd, lpClassName, lpClassName.Capacity) = 0) throw new Exception(not found IntPtr!); return lpClassName.ToString(); / / 窗口在屏幕位置 / / 句柄 / public static Rectangle GetWindowRect(IntPtr hWnd) Rectangle result = default(Rectangle); GetWindowRect(hWnd, ref result); return result; / / 窗口相对屏幕位置转换成父窗口位置 / / / / public static Rectangle ScreenToClient(IntPtr hWnd, Rectangle rect) Rectangle result = rect; ScreenToClient(hWnd, ref result); return result; / / 窗口大小 / / / public static Rectangle GetClientRect(IntPtr hWnd) Rectangle result = default(Rectangle); GetClientRect(hWnd, ref result); return result; #endregion public class WinHWND public IntPtr HWND get; set; public string ClassName get; set; public WinHWND Parent get; set; public int InParentSequence get; set; private Rectangle _currentRect; private string _Text; private int _Left; private int _Top; private int _Width; private int _Height; public string Text get return _Text = default(string) ? WinAPI.GetText(this.HWND) : _Text; set _Text = value; WinAPI.SetText(this.HWND, value); public int Left get return _Left = default(int) ? _currentRect.Left : _Left; set _Left = value; WinAPI.MoveWindow(this.HWND, value, this.Top, this.Width, this.Height, true); public int Top get return _Top = default(int) ? _currentRect.Top : _Top; set _Top = value; WinAPI.MoveWindow(this.HWND, this.Left, value, this.Width, this.Height, true); public int Width get return _Width = default(int) ? _currentRect.Width : _Width; set _Width = value; WinAPI.MoveWindow(this.HWND, this.Left, this.Top, value, this.Height, true); public int Height get return _Height = default(int) ? _currentRect.Height : _Height; set _Height = value; WinAPI.MoveWindow(this.HWND, this.Left, this.Top, this.Width, value, true); private WinHWND() public WinHWND(IntPtr hWnd) this.HWND = hWnd; this.ClassName = GetClassName(); this.Parent = GetParent(); this.InParentSequence = GetInParentSequence(); this._currentRect = GetRect(); private string GetClassName() return WinAPI.GetClassName(this.HWND); private WinHWND GetParent() if (WinAPI.GetParent(this.HWND) = null) throw new Exception(not found IntPtr!); if (WinAPI.GetParent(this.HWND) = IntPtr.Zero) return null; return new WinHWND(WinAPI.GetParent(this.HWND); private int GetInParentSequence() IntPtr IntprtParent = this.Parent = null ? IntPtr.Zero : this.Parent.HWND; return WinAPI.GetChildHandles(IntprtParent, this.ClassName).IndexOf(this.HWND); private Rectangle GetRect() if (this.Parent = null) return default(Rectangle); Rectangle clientSize = WinAPI.GetClientRect(this.HWND); Rectangle clien