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)：田ViewCodeDllImport(user32.dll,EntryPoint=GetCursorPos)publicstaticexternboolGetCursorPos(outPointpt);DllImport(user32.dll,EntryPoint=WindowFromPoint)publicstaticexternIntPtrWindowFromPoint(Pointpt);/鼠标位置的坐标publicstaticPointGetCursorPosPoint

2、()Pointp=newPoint();if(GetCursorPos(outp)returnp;returndefault(Point);/找到句柄/坐标/publicstaticIntPtrGetHandle(Pointp)returnWindowFromPoint(p);过程二：改变窗口的Text您的使用1个WinAPI：田ViewCodeDllImport(user32.dll,EntryPoint=SendMessage)lParam);privatestaticexternintSendMessage(IntPtrhWnd,intMsg,IntPtrwParam,string/lP

3、aram);/给窗口发送内容/句柄/要发送的内容publicstaticvoidSetText(IntPtrhWnd,stringlParam)SendMessage(hWnd,WM_SETTEXT,IntPtr.Zero,lParam);privateconstintWM_SETTEXT=OxOOOC;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

4、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WinAPI国ViewCodeDllImport(user32.dll,EntryPoint=FindWindow)privatestaticexternIntPtrFindWindow(stringIpClassName,stringIpWindowName);DllImport(user32.dll,EntryPoint=FindWindowEx)privatestaticexternIntPtrFindWindowEx(IntPtrhwndParent,IntPtrhwndCh

5、ildAfter,stringlpszClass,stringlpszWindow);DllImport(user32.dll,EntryPoint=GetParent)publicstaticexternIntPtrGetParent(IntPtrhWnd);nMaxCounDllImport(user32.dll,CharSet=CharSet.Auto)nMaxCount);publicstaticexternintGetClassName(IntPtrhWnd,StringBuilderlpClassName,intt);/找到句柄/类名/publicstaticIntPtrGetHa

6、ndle(stringIpClassName)returnFindWindow(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/publicstaticIntPtrGetChildHandle(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass)returnFindWindowEx(hwndParent,hwndChildAfter,lpszClass,null);/全部子窗口句柄/父窗口句柄/类名/publicstaticListGetChildHandles(IntPtrhwndPare

7、nt,stringclassName)ListresultList=newList();for(IntPtrhwndClient=GetChildHandle(hwndParent,IntPtr.Zero,className);hwndClient=IntPtr.Zero;hwndClient=GetChildHandle(hwndParent,hwndClient,className)resultList.Add(hwndClient);returnresultList;/找类名/句柄/publicstaticstringGetClassName(IntPtrhWnd)StringBuild

8、erlpClassName=newStringBuilder(128);if(GetClassName(hWnd,lpClassName,lpClassName.Capacity)=0)thrownewException(notfoundIntPtr!);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WinHW

9、ND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。田ViewCodepublicclassWinHWNDTOC o 1-5 h zpublicIntPtrHWNDget;set;publicstringClassNameget;set;publicWinHWNDParentget;set;publicintInParentSequenceget;set;privateWinHWND()publicWinHWND(IntPtrhWnd)this.HWND=hWnd;this.ClassName=GetClassName();this

10、.Parent=GetParent();this.InParentSequence=GetInParentSequence();privatestringGetClassName()returnWinAPI.GetClassName(this.HWND);privateWinHWNDGetParent()if(WinAPI.GetParent(this.HWND)=null)thrownewException(notfoundIntPtr!);if(WinAPI.GetParent(this.HWND)=IntPtr.Zero)returnnull;returnnewWinHWND(WinAP

11、I.GetParent(this.HWND);privateintGetInParentSequence()IntPtrIntprtParent=this.Parent=null?IntPtr.Zero:this.Parent.HWND;returnWinAPI.GetChildHandles(IntprtParent,this.ClassName).IndexOf(this.HWND);publicoverridestringToString()StringBuilderresult=newStringBuilder();for(WinHWNDwinHandle=this;winHandle

12、!=null;winHandle=winHandle.Parent)result.Append(string.Format(0:1;,Escape(winHandle.ClassName),winHandle.InParentSequence.ToString();if(winHandle.InParentSequence=-1)break;returnresult.ToString().TrimEnd(;);privatestaticstringGetBaseMark(stringsMark)stringsMarks=sMark.Split(;);returnsMarkssMarks.Len

13、gth-1.Split(:)0;privatestaticstringGetChildMarks(stringsMark)stringsMarks=sMark.Split(;);stringsChildMarks=newstringsMarks.Length-1;for(inti=0;isChildMarks.Length;i+)sChildMarksi=sMarksi;returnsChildMarks;/我一直觉得这段写很丑陋，谁能帮帮我改改publicstaticWinHWNDGetWinHWND(stringsMark)ListbaseHwnds=WinAPI.GetChildHand

14、les(IntPtr.Zero,GetBaseMark(sMark);stringsChildMarks=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(IntPtrbaseHwndinbaseHwnds)IntPtrhandle=baseHwnd;for(inti=sChildMarks.Length-1;i=0;i-)stringsChildMark=sChildMarksi.Split(:);tryhandle=WinAPI.GetChildHandles(handle,UnEscape(sChildM

15、ark0)int.Parse(sChildMark1);catchbreak;if(i=0)returnnewWinHWND(handle);continue;returnnull;#region转义privatestaticstringEscape(stringarg)returnarg.Replace(:,:).Replace(;,;);privatestaticstringUnEscape(stringarg)returnarg.Replace(:,:).Replace(;,;);#endregionpublicstaticWinHWNDGetWinHWND()returnnewWinH

16、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WinAPI田ViewCodeusingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Runtime.InteropServices;usingSystem.Drawing;usingSystem.Collections;namespaceInformationCollectionDataFillpublic

17、classWinAPI#regionWinodwsAPIDllImport(user32.dll,EntryPoint=FindWindow)privatestaticexternIntPtrFindWindow(stringIpClassName,DllImport(user32.dll,EntryPoint=FindWindowEx)privatestaticexternIntPtrFindWindowEx(IntPtrhwndParentlpszClass,stringlpszWindow);DllImport(user32.dll,EntryPoint=SendMessage)priv

18、atestaticexternintSendMessage(IntPtrhWnd,intMsg,DllImport(user32.dll,EntryPoint=GetParent)publicstaticexternIntPtrGetParent(IntPtrhWnd);stringIpWindowName);IntPtrhwndChildAfter,stringIntPtrwParam,stringlParam);Out,MarshalAs(UnmanagedType.LPTStr)refRectanglerc);refRectanglerc);publicstaticexternintMo

19、veWindow(IntPtrhwnd,intx,inty,intnWidth,intnHeight,boolOut,MarshalAs(UnmanagedType.LPTStr)refRectanglerc);refRectanglerc);publicstaticexternintMoveWindow(IntPtrhwnd,intx,inty,intnWidth,intnHeight,boolDllImport(user32.dll,EntryPoint=GetCursorPos)publicstaticexternboolGetCursorPos(outPointpt);DllImpor

20、t(user32.dll,EntryPoint=WindowFromPoint,CharSet=CharSet.Auto,ExactSpelling=true)publicstaticexternIntPtrWindowFromPoint(Pointpt);DllImport(user32.dll,CharSet=CharSet.Auto)publicstaticexternintGetClassName(IntPtrhWnd,StringBuilderlpClassName,intnMaxCount);DllImport(user32.dll,CharSet=CharSet.Auto)pub

21、licstaticexternintGetWindowText(IntPtrhWnd,StringBuilderlpString,intnMaxCount);DllImport(user32.dll,CharSet=CharSet.Auto)publicstaticexternintGetWindowRect(IntPtrhwnd,DllImport(user32.dll,CharSet=CharSet.Auto)publicstaticexternintGetClientRect(IntPtrhwnd,DllImport(user32.dll,CharSet=CharSet.Auto)bRe

22、paint);DllImport(user32.dll,CharSet=CharSet.Auto,SetLastError=true,ExactSpelling=true)publicstaticexternintScreenToClient(IntPtrhWnd,refRectanglerect);#endregion#region封装API方法/找到句柄/类名/publicstaticIntPtrGetHandle(stringIpClassName)returnFindWindow(IpClassName,null);/找到句柄/坐标/publicstaticIntPtrGetHandl

23、e(Pointp)returnWindowFromPoint(p);/鼠标位置的坐标publicstaticPointGetCursorPosPoint()Pointp=newPoint();if(GetCursorPos(outp)returnp;returndefault(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/publicstaticIntPtrGetChildHandle(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass)returnFindWindowEx(hwndParent,hwndChi

24、ldAfter,lpszClass,null);/全部子窗口句柄/父窗口句柄/类名/publicstaticListGetChildHandles(IntPtrhwndParent,stringclassName)ListresultList=newList();for(IntPtrhwndClient=GetChildHandle(hwndParent,IntPtr.Zero,className);hwndClient=IntPtr.Zero;hwndClient=GetChildHandle(hwndParent,hwndClient,className)resultList.Add(hw

25、ndClient);returnresultList;/给窗口发送内容/句柄/要发送的内容publicstaticvoidSetText(IntPtrhWnd,stringlParam)SendMessage(hWnd,WM_SETTEXT,IntPtr.Zero,lParam);privateconstintWM_SETTEXT=0 x000C;/获得窗口内容或标题/句柄/publicstaticstringGetText(IntPtrhWnd)StringBuilderresult=newStringBuilder(128);GetWindowText(hWnd,result,result

26、.Capacity);returnresult.ToString();/找类名/句柄/publicstaticstringGetClassName(IntPtrhWnd)StringBuilderlpClassName=newStringBuilder(128);if(GetClassName(hWnd,lpClassName,lpClassName.Capacity)=0)thrownewException(notfoundIntPtr!);returnlpClassName.ToString();/窗口在屏幕位置/句柄/publicstaticRectangleGetWindowRect(

27、IntPtrhWnd)Rectangleresult=default(Rectangle);GetWindowRect(hWnd,refresult);returnresult;/窗口相对屏幕位置转换成父窗口位置/publicstaticRectangleScreenToClient(IntPtrhWnd,Rectanglerect)Rectangleresult=rect;ScreenToClient(hWnd,refresult);returnresult;/窗口大小/publicstaticRectangleGetClientRect(IntPtrRectangleresult=defa

28、ult(Rectangle);GetClientRect(hWnd,refresult);returnresult;#endregionpublicclassWinHWNDpublicpublicpublicpublicIntPtrHWNDget;set;stringClassNameget;set;WinHWNDParentget;set;intInParentSequenceget;set;privateprivateprivateprivateprivateprivateRectanglecurrentRect;stringText;intLeft;intTop;intWidth;int

29、Height;publicstringTexthWnd)getreturn_Text=default(string)?WinAPI.GetText(this.HWND):_Text;set_Text=value;WinAPI.SetText(this.HWND,value);publicintLeftgetreturn_Left=default(int)?_currentRect.Left:_Left;settrue);_Left=value;true);WinAPI.MoveWindow(this.HWND,value,this.Top,this.Width,this.Height,publ

30、icintTopgetcurrentRect.Top:_Top;return_Top=default(int)currentRect.Top:_Top;setset_Top=value;WinAPI.MoveWindow(this.HWND,this.Left,_Top=value;WinAPI.MoveWindow(this.HWND,this.Left,value,this.Width,this.Height,true);publicgetpublicgetsetintWidthreturn_Width=default(int)currentRect.Width:_Width;public

31、get_Width=value;WinAPI.MoveWindow(this.HWND,this.Left,this.Top,value,this.Height,true);intHeightreturn_Height=default(int)currentRect.Height:_Height;settrue);_Height=value;true);WinAPI.MoveWindow(this.HWND,this.Left,this.Top,this.Width,value,privateWinHWND()publicWinHWND(IntPtrhWnd)this.HWND=hWnd;th

32、is.ClassName=GetClassName();this.Parent=GetParent();this.InParentSequence=GetInParentSequence();this._currentRect=GetRect();privatestringGetClassName()returnWinAPI.GetClassName(this.HWND);privateWinHWNDGetParent()if(WinAPI.GetParent(this.HWND)=null)thrownewException(notfoundIntPtr!);if(WinAPI.GetPar

33、ent(this.HWND)=IntPtr.Zero)returnnull;returnnewWinHWND(WinAPI.GetParent(this.HWND);privateintGetInParentSequence()IntPtrIntprtParent=this.Parent=null?IntPtr.Zero:this.Parent.HWND;returnWinAPI.GetChildHandles(IntprtParent,this.ClassName).IndexOf(this.HWND);privateRectangleGetRect()if(this.Parent=null

34、)returndefault(Rectangle);RectangleclientSize=WinAPI.GetClientRect(this.HWND);RectangleclientPoint=WinAPI.ScreenToClient(this.Parent.HWND,WinAPI.GetWindowRect(this.HWND);returnnewRectangle(clientPoint.X,clientPoint.Y,clientSize.Width,clientSize.Height);publicstaticWinHWNDGetWinHWND()returnnewWinHWND

35、(WinAPI.GetHandle(WinAPI.GetCursorPosPoint();publicoverridestringToString()StringBuilderresult=newStringBuilder();for(WinHWNDwinHandle=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(;);privatestaticstringGetBaseMark(stringsMark)stri