C#操作窗口类(句柄操作)

1、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 CodeDllImport("user32.dll", EntryPoint ="GetCursorPos")publicstaticexternboolGetCursorPos(outPoint pt);DllImport("user32.dll", EntryPoint ="WindowFromPoint")publicstaticexternIntPtr WindowFrom

2、Point(Point pt);/ 鼠标位置的坐标publicstaticPoint GetCursorPosPoint()Point p =new Point();if(GetCursorPos(out p)returnp;returndefault(Point);/ <summary>./ 找到句柄/ </summary>/<param name="p">坐标 </param>/ <returns></returns>publicstaticIntPtr GetHandle(Point p)retu

3、rnWindowFromPoint(p);过程二：改变窗口的Text您的使用1 个 WinAPI：View CodeDllImport("user32.dll", EntryPoint ="SendMessage")privatestaticexternintSendMessage(IntPtr hWnd,intMsg, IntPtr wParam,stringlParam);/ <summary>/ 给窗口发送内容/ </summary>/<param name="hWnd">句柄 </pa

4、ram>/<param name="lParam">要发送的内容 </param>publicstaticvoidSetText(IntPtr hWnd,stringlParam).SendMessage(hWnd, WM_SETTEXT, IntPtr.Zero, lParam);privateconstintWM_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

5、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 CodeDllImport("user32.dll", EntryPoint ="FindWindow")privatestaticexternIntPtr FindWindow(stringIpClassName,stringIpWindowName);DllImport("user32.dll", E

6、ntryPoint ="FindWindowEx")privatestaticexternIntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter,stringlpszClass,stringlpszWindow);DllImport("user32.dll", EntryPoint ="GetParent")publicstaticexternIntPtr GetParent(IntPtr hWnd);DllImport("user32.dll",

7、CharSet = CharSet.Auto)publicstaticexternint GetClassName(IntPtr hWnd, StringBuilder lpClassName,int nMaxCount);./ <summary>/ 找到句柄/ </summary>/<param name="IpClassName">类名 </param>/ <returns></returns>publicstaticIntPtr GetHandle(stringIpClassName)return

8、FindWindow(IpClassName,null);/ <summary>/ 子窗口句柄/ </summary>/<param name="hwndParent">父窗口句柄 </param>/<param name="hwndChildAfter">前一个同目录级同名窗口句柄</param>/<param name="lpszClass">类名 </param>/ <returns></returns>pub

9、licstaticIntPtr GetChildHandle(IntPtr hwndParent, IntPtr hwndChildAfter,stringlpszClass).returnFindWindowEx(hwndParent, hwndChildAfter, lpszClass,null);/ <summary>/ 全部子窗口句柄/ </summary>/<param name="hwndParent">父窗口句柄 </param>/<param name="className">类

10、名 </param>/ <returns></returns>publicstaticList<IntPtr> GetChildHandles(IntPtr hwndParent,stringclassName)List<IntPtr> resultList =new List<IntPtr>();for(IntPtr hwndClient = GetChildHandle(hwndParent, IntPtr.Zero, className); hwndClient != IntPtr.Zero; hwndClient

11、= GetChildHandle(hwndParent, hwndClient, className)resultList.Add(hwndClient);returnresultList;/ <summary>/ 找类名./ </summary>/<param name="hWnd">句柄 </param>/ <returns></returns>publicstaticstringGetClassName(IntPtr hWnd)StringBuilder lpClassName =new Stri

12、ngBuilder(128 );if(GetClassName(hWnd, lpClassName, lpClassName.Capacity) =0)thrownew Exception("not found IntPtr!");returnlpClassName.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 Win

13、HWND 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 CodepublicclassWinHWNDpublicIntPtr HWND get ;set ; publicstringClassName get ;set ; publicWinHWND Parent get ;set ; publicintInParentSequence get ;set ; .privateWinHWND() publicWinHWND(IntPtr hWnd)this.HWND = hWnd;this.ClassName = GetC

14、lassName();this.Parent = GetParent();this.InParentSequence = GetInParentSequence();privatestringGetClassName()return WinAPI.GetClassName(this .HWND);privateWinHWND GetParent()if(WinAPI.GetParent(this.HWND) = null)thrownew Exception("not found IntPtr!");if(WinAPI.GetParent(this.HWND) = IntP

15、tr.Zero)returnnull ;.returnnew WinHWND(WinAPI.GetParent(this.HWND);privateintGetInParentSequence()IntPtr IntprtParent =this.Parent =null? IntPtr.Zero :this.Parent.HWND;returnWinAPI.GetChildHandles(IntprtParent,this.ClassName).IndexOf(this.HWND);publicoverridestringToString()StringBuilder result =new

16、 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 ;returnresult.ToString().TrimEnd('');privates

17、taticstringGetBaseMark(stringsMark)string sMarks = sMark.Split('');returnsMarkssMarks.Length -1.Split(':') 0;.privatestaticstring GetChildMarks(stringsMark)string sMarks = sMark.Split('');string sChildMarks =new stringsMarks.Length -1;for (int i =0; i < sChildMarks.Length;

18、 i + )sChildMarksi = sMarksi ;returnsChildMarks;/ 我一直觉得这段写很丑陋，谁能帮帮我改改publicstaticWinHWND GetWinHWND( stringsMark)List<IntPtr> 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 base

19、HwndinbaseHwnds)IntPtr handle = baseHwnd;for( inti = sChildMarks.Length -1; i >=0; i-)string sChildMark = sChildMarksi.Split(':');.tryhandle = WinAPI.GetChildHandles(handle, UnEscape(sChildMark0)int.Parse(sChildMark1);catchbreak ;if(i =0)returnnew WinHWND(handle);continue;returnnull;#regi

20、on转义privatestaticstringEscape(stringarg)returnarg.Replace(":",":").Replace("", "");privatestaticstringUnEscape(stringarg).returnarg.Replace(":",":").Replace("","");#endregionpublicstaticWinHWND GetWinHWND()returnnew WinH

21、WND(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 CodeusingSystem;usingSystem.Linq;usingSystem.Text;usingSystem.Drawing;usingSystem.Collections;namespaceInformationCollectionDataFillpublicclassWinAPI#regionWinodwsAPIDllImport("user32.dll", EntryP

22、oint ="FindWindow").privatestaticexternIntPtr FindWindow(stringIpClassName,stringIpWindowName);DllImport("user32.dll", EntryPoint ="FindWindowEx")privatestaticexternIntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter,stringlpszClass,stringlpszWindow);DllImport(

23、"user32.dll", EntryPoint ="SendMessage")privatestaticexternintSendMessage(IntPtr hWnd,intMsg, IntPtr wParam,stringlParam);DllImport("user32.dll", EntryPoint ="GetParent")publicstaticexternIntPtr GetParent(IntPtr hWnd);DllImport("user32.dll", EntryPoi

24、nt ="GetCursorPos")publicstaticexternboolGetCursorPos(out Point pt);DllImport("user32.dll", EntryPoint ="WindowFromPoint", CharSet = CharSet.Auto, ExactSpelling = true)publicstaticexternIntPtr WindowFromPoint(Point pt);DllImport("user32.dll", CharSet = CharSet

25、.Auto)publicstaticexternintGetClassName(IntPtr hWnd, StringBuilder lpClassName,intnMaxCount);DllImport("user32.dll", CharSet = CharSet.Auto)publicstaticexternintGetWindowText(IntPtr hWnd, Out, MarshalAs(UnmanagedType.LPTStr)StringBuilder lpString,intnMaxCount);.DllImport("user32.dll&q

26、uot;, CharSet = CharSet.Auto)publicstaticexternintGetWindowRect(IntPtr hwnd,refRectangle rc);DllImport("user32.dll", CharSet = CharSet.Auto)publicstaticexternintGetClientRect(IntPtr hwnd,refRectangle rc);DllImport("user32.dll", CharSet = CharSet.Auto)publicstaticexternintMoveWind

27、ow(IntPtr hwnd,int x,int y, int nWidth,int nHeight,boolbRepaint);DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError =true , ExactSpelling =true )publicstaticexternintScreenToClient(IntPtr hWnd,refRectangle rect);#endregion#region封装 API 方法/ <summary>/ 找到句柄/ </summary>/

28、<param name="IpClassName">类名 </param>/ <returns></returns>publicstaticIntPtr GetHandle(stringIpClassName).returnFindWindow(IpClassName,null);/ <summary>/ 找到句柄/ </summary>/<param name="p">坐标 </param>/ <returns></returns>p

29、ublicstaticIntPtr GetHandle(Point p)returnWindowFromPoint(p);/ 鼠标位置的坐标publicstaticPoint GetCursorPosPoint()Point p =new Point();if(GetCursorPos(outp)returnp;returndefault(Point);./ <summary>/ 子窗口句柄/ </summary>/<param name="hwndParent">父窗口句柄 </param>/<param name=&

30、quot;hwndChildAfter">前一个同目录级同名窗口句柄</param>/<param name="lpszClass">类名 </param>/ <returns></returns>publicstaticIntPtr GetChildHandle(IntPtr hwndParent, IntPtr hwndChildAfter,stringlpszClass)returnFindWindowEx(hwndParent, hwndChildAfter, lpszClass,null)

31、;/ <summary>/ 全部子窗口句柄/ </summary>/<param name="hwndParent">父窗口句柄 </param>/<param name="className">类名 </param>./ <returns></returns>publicstaticList<IntPtr> GetChildHandles(IntPtr hwndParent,stringclassName)List<IntPtr> r

32、esultList =new List<IntPtr>();for(IntPtr hwndClient = GetChildHandle(hwndParent, IntPtr.Zero, className); hwndClient != IntPtr.Zero; hwndClient = GetChildHandle(hwndParent, hwndClient, className)resultList.Add(hwndClient);returnresultList;/ <summary>/ 给窗口发送内容/ </summary>/<param

33、name="hWnd">句柄 </param>/<param name="lParam">要发送的内容 </param>publicstaticvoidSetText(IntPtr hWnd,stringlParam)SendMessage(hWnd, WM_SETTEXT, IntPtr.Zero, lParam);privateconstintWM_SETTEXT = 0x000C ;./ <summary>/ 获得窗口内容或标题/ </summary>/<param name=

34、"hWnd">句柄 </param>/ <returns></returns>publicstaticstringGetText(IntPtr hWnd)StringBuilder result =new StringBuilder(128 );GetWindowText(hWnd, result, result.Capacity);returnresult.ToString();/ <summary>/ 找类名/ </summary>/<param name="hWnd">句

35、柄 </param>/ <returns></returns>publicstaticstringGetClassName(IntPtr hWnd)StringBuilder lpClassName =new StringBuilder(128 );if(GetClassName(hWnd, lpClassName, lpClassName.Capacity) =0).thrownew Exception("not found IntPtr!");returnlpClassName.ToString();/ <summary>

36、/ 窗口在屏幕位置/ </summary>/<param name="hWnd">句柄 </param>/ <returns></returns>publicstaticRectangle GetWindowRect(IntPtr hWnd)Rectangle result =default(Rectangle);GetWindowRect(hWnd,refresult);returnresult;/ <summary>/ 窗口相对屏幕位置转换成父窗口位置/ </summary>/ <

37、param name="hWnd"></param>/ <param name="rect"></param>./ <returns></returns>publicstaticRectangle ScreenToClient(IntPtr hWnd, Rectangle rect)Rectangle result = rect;ScreenToClient(hWnd,refresult);returnresult;/ <summary>/ 窗口大小/ </summary

38、>/ <param name="hWnd"></param>/ <returns></returns>publicstaticRectangle GetClientRect(IntPtr hWnd)Rectangle result =default(Rectangle);GetClientRect(hWnd,refresult);returnresult;#endregionpublicclassWinHWNDpublicIntPtr HWND get ;set ; .publicstringClassName get

39、;set ; publicWinHWND Parent get ;set ; publicintInParentSequence get ;set ; privateRectangle _currentRect;privatestring_Text;privateint_Left;privateint_Top;privateint_Width;privateint_Height;publicstringTextgetreturn_Text =default( string) ? WinAPI.GetText(this.HWND) : _Text;set_Text = value;WinAPI.

40、SetText(this.HWND, value);publicintLeftget.return_Left =default( int) ? _currentRect.Left : _Left;set_Left = value;WinAPI.MoveWindow(this.HWND, value,this.Top,this.Width,this.Height,true);publicintTopgetreturn_Top =default( int) ? _currentRect.Top : _Top;set_Top = value;WinAPI.MoveWindow(this.HWND,

41、this.Left, value,this.Width,this.Height,true);publicintWidthgetreturn_Width =default( int) ? _currentRect.Width : _Width;.set_Width = value;WinAPI.MoveWindow(this.HWND, this.Left,this.Top, value,this.Height,true);publicintHeightgetreturn_Height =default( int) ? _currentRect.Height : _Height;set_Heig

42、ht = value;WinAPI.MoveWindow(this.HWND, this.Left,this.Top,this.Width, value,true);privateWinHWND() publicWinHWND(IntPtr hWnd)this.HWND = hWnd;this.ClassName = GetClassName();this.Parent = GetParent();.this.InParentSequence = GetInParentSequence();this._currentRect = GetRect();privatestringGetClassN

43、ame()returnWinAPI.GetClassName(this.HWND);privateWinHWND GetParent()if(WinAPI.GetParent(this.HWND) =null)thrownew Exception("not found IntPtr!");if(WinAPI.GetParent(this.HWND) = IntPtr.Zero)returnnull;returnnew WinHWND(WinAPI.GetParent(this.HWND);privateintGetInParentSequence()IntPtr Intpr

44、tParent =this.Parent =null? IntPtr.Zero :this.Parent.HWND;returnWinAPI.GetChildHandles(IntprtParent,this.ClassName).IndexOf(this.HWND);.privateRectangle GetRect()if( this.Parent =null)returndefault(Rectangle);Rectangle clientSize = WinAPI.GetClientRect(this.HWND);Rectangle clientPoint = WinAPI.ScreenToClient(this.Parent.HWND, WinAPI.GetWindowRect(this .HWND);returnnew Rectangle(clientPoint.X, clientPoint.Y, clientSize.Width, clientSize.Height);publicstaticWinHWND GetWinHWND()returnnew WinHWND(WinAPI.GetHandle(WinAPI.GetCursorPosPoint();publicoverridestringToStr