C#操作窗口类句柄操作.docx
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- 上传时间:2022-12-31
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C#操作窗口类句柄操作.docx
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C#操作窗口类句柄操作
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):
ViewCode
[DllImport("user32.dll",EntryPoint="GetCursorPos")]
publicstaticexternboolGetCursorPos(outPointpt);
[DllImport("user32.dll",EntryPoint="WindowFromPoint")]
publicstaticexternIntPtrWindowFromPoint(Pointpt);
//鼠标位置的坐标
publicstaticPointGetCursorPosPoint()
{
Pointp=newPoint();
if(GetCursorPos(outp))
{
returnp;
}
returndefault(Point);
}
///
///找到句柄
///
///
///
publicstaticIntPtrGetHandle(Pointp)
{
returnWindowFromPoint(p);
}
过程二:
改变窗口的Text
您的使用1个WinAPI:
ViewCode
[DllImport("user32.dll",EntryPoint="SendMessage")]
privatestaticexternintSendMessage(IntPtrhWnd,intMsg,IntPtrwParam,stringlParam);
///
///给窗口发送内容
///
///
///
publicstaticvoidSetText(IntPtrhWnd,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WinAPI
ViewCode
[DllImport("user32.dll",EntryPoint="FindWindow")]
privatestaticexternIntPtrFindWindow(stringIpClassName,stringIpWindowName);
[DllImport("user32.dll",EntryPoint="FindWindowEx")]
privatestaticexternIntPtrFindWindowEx(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass,stringlpszWindow);
[DllImport("user32.dll",EntryPoint="GetParent")]
publicstaticexternIntPtrGetParent(IntPtrhWnd);
[DllImport("user32.dll",CharSet=CharSet.Auto)]
publicstaticexternintGetClassName(IntPtrhWnd,StringBuilderlpClassName,intnMaxCount);
///
///找到句柄
///
///
///
publicstaticIntPtrGetHandle(stringIpClassName)
{
returnFindWindow(IpClassName,null);
}
///
///子窗口句柄
///
///
///
///
///
publicstaticIntPtrGetChildHandle(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass)
{
returnFindWindowEx(hwndParent,hwndChildAfter,lpszClass,null);
}
///
///全部子窗口句柄
///
///
///
///
publicstaticList
{
List
for(IntPtrhwndClient=GetChildHandle(hwndParent,IntPtr.Zero,className);hwndClient!
=IntPtr.Zero;hwndClient=GetChildHandle(hwndParent,hwndClient,className))
{
resultList.Add(hwndClient);
}
returnresultList;
}
///
///找类名
///
///
///
publicstaticstringGetClassName(IntPtrhWnd)
{
StringBuilderlpClassName=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。
ViewCode
publicclassWinHWND
{
publicIntPtrHWND{get;set;}
publicstringClassName{get;set;}
publicWinHWNDParent{get;set;}
publicintInParentSequence{get;set;}
privateWinHWND(){}
publicWinHWND(IntPtrhWnd)
{
this.HWND=hWnd;
this.ClassName=GetClassName();
this.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(WinAPI.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!
=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)
{
string[]sMarks=sMark.Split(';');
returnsMarks[sMarks.Length-1].Split(':
')[0];
}
privatestaticstring[]GetChildMarks(stringsMark)
{
string[]sMarks=sMark.Split(';');
string[]sChildMarks=newstring[sMarks.Length-1];
for(inti=0;i { sChildMarks[i]=sMarks[i]; } returnsChildMarks; } //我一直觉得这段写很丑陋,谁能帮帮我改改 publicstaticWinHWNDGetWinHWND(stringsMark) { List 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(IntPtrbaseHwndinbaseHwnds) { IntPtrhandle=baseHwnd; for(inti=sChildMarks.Length-1;i>=0;i--) { string[]sChildMark=sChildMarks[i].Split(': '); try { handle=WinAPI.GetChildHandles(handle,UnEscape(sChildMark[0]))[int.Parse(sChildMark[1])]; } catch { break; } if(i==0)returnnewWinHWND(handle); } continue; } returnnull; } #region转义 privatestaticstringEscape(stringarg) { returnarg.Replace(": ","\\: ").Replace(";","\\;"); } privatestaticstringUnEscape(stringarg) { returnarg.Replace("\\: ",": ").Replace("\\;",";"); } #endregion publicstaticWinHWNDGetWinHWND() { returnnewWinHWND(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 ViewCode usingSystem; usingSystem.Collections.Generic; usingSystem.Linq; usingSystem.Text; usingSystem.Runtime.InteropServices; usingSystem.Drawing; usingSystem.Collections; namespaceInformationCollectionDataFill { publicclassWinAPI { #regionWinodwsAPI [DllImport("user32.dll",EntryPoint="FindWindow")] privatestaticexternIntPtrFindWindow(stringIpClassName,stringIpWindowName); [DllImport("user32.dll",EntryPoint="FindWindowEx")] privatestaticexternIntPtrFindWindowEx(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass,stringlpszWindow); [DllImport("user32.dll",EntryPoint="SendMessage")] privatestaticexternintSendMessage(IntPtrhWnd,intMsg,IntPtrwParam,stringlParam); [DllImport("user32.dll",EntryPoint="GetParent")] publicstaticexternIntPtrGetParent(IntPtrhWnd); [DllImport("user32.dll",EntryPoint="GetCursorPos")] publicstaticexternboolGetCursorPos(outPointpt); [DllImport("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)] publicstaticexternintGetWindowText(IntPtrhWnd,[Out,MarshalAs(UnmanagedType.LPTStr)]StringBuilderlpString,intnMaxCount); [DllImport("user32.dll",CharSet=CharSet.Auto)] publicstaticexternintGetWindowRect(IntPtrhwnd,refRectanglerc); [DllImport("user32.dll",CharSet=CharSet.Auto)] publicstaticexternintGetClientRect(IntPtrhwnd,refRectanglerc); [DllImport("user32.dll",CharSet=CharSet.Auto)] publicstaticexternintMoveWindow(IntPtrhwnd,intx,inty,intnWidth,intnHeight,boolbRepaint); [DllImport("user32.dll",CharSet=CharSet.Auto,SetLastError=true,ExactSpelling=true)] publicstaticexternintScreenToClient(IntPtrhWnd,refRectanglerect); #endregion #region封装API方法 /// ///找到句柄 /// /// /// publicstaticIntPtrGetHandle(stringIpClassName) { returnFindWindow(IpClassName,null); } /// ///找到句柄 /// /// /// publicstaticIntPtrGetHandle(Pointp) { returnWindowFromPoint(p); } //鼠标位置的坐标 publicstaticPointGetCursorPosPoint() { Pointp=newPoint(); if(GetCursorPos(outp)) { returnp; } returndefault(Point); } /// ///子窗口句柄 /// /// /// /// /// publicstaticIntPtrGetChildHandle(IntPtrhwndParent,IntPtrhwndChildAfter,stringlpszClass) { returnFindWindowEx(hwndParent,hwndChildAfter,lpszClass,null); } /// ///全部子窗口句柄 /// /// /// /// publicstaticList { List for(IntPtrhwndClient=GetChildHandle(hwndParent,IntPtr.Zero,className);hwndClient! =IntPtr.Zero;hwndClient=GetChildHandle(hwndParent,hwndClient,className)) { resultList.Add(hwndClient); } returnresultList; }
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- C# 操作 窗口 句柄