如何获取当前鼠标上的字符串内容？高分送？

Question

在一个CView为基类的界面上，显示数行字符串，我需要获取在鼠标上当前一行字符串的内容，如何实现？谢谢。

Answer 1

#include <windows.h>
#include <STDIO.H>HHOOK hMouseHook;
LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam);
static char fname[64],modulename[64],trash[640];
static BOOL  BeenHooked=FALSE;
BOOL flag=FALSE;
DWORD SysFunc1,SysFunc2,SysFunc3,SysFunc4;
DWORD MyFunc1,MyFunc2,MyFunc3,MyFunc4;BOOL ChangeFuncEntry(HANDLE,int);
BOOL IsSysDll(char *name);
void SendText(HDC hdc,LPCSTR lpszString,UINT cbString);
//list all modules
char modules[100][16];
static int index=0;
static RECT  rect;BOOL APIENTRY DllMain(HANDLE hModule,DWORD reason,LPVOID lpReserved)
{
switch( reason )
{
case DLL_PROCESS_ATTACH:
GetModuleFileName(GetModuleHandle(NULL),modulename,64);
CharLower(modulename);
//MessageBox(NULL,modulename,"inject into process",MB_OK);
//wsprintf(trash,"%ld %ld\n%ld %ld\n%ld %ld\n%ld %ld",SysFunc1,MyFunc1,SysFunc2,MyFunc2,SysFunc3,MyFunc3,SysFunc4,MyFunc4);
//MessageBox(NULL,"",trash,MB_OK);
/*if(strcmp(modulename,"notepad.exe"))
flag=TRUE;
MessageBox(NULL,modulename,"inject into process",MB_OK);*/
break;
case DLL_PROCESS_DETACH:
break;
}
    return TRUE;
}BOOL InstallMouseHook() 
{
hMouseHook =SetWindowsHookEx(WH_MOUSE,(HOOKPROC)MouseProc,GetModuleHandle("hookdll.dll"),0);//GetCurrentThreadId());
if ( hMouseHook == NULL)
return FALSE;
    return TRUE ;
}
BOOL UninstallMouseHook()
{
UnhookWindowsHookEx(hMouseHook);
return TRUE;
}
LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam)
{
LPMOUSEHOOKSTRUCT lpMouseHookStruct;
HWND hwnd;
POINT MousePoint;
static POINT old;
int i;
char modulelist[1600];
DWORD base;
MEMORY_BASIC_INFORMATION    mbi;//"E:\Program Files\DevStudio\SharedIDE\bin\Msdev.exe"
//"c:\\temp\\testhook\\debug\\testhook.exe"

if (nCode < 0)  // do not process the message 
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
//if(strcmp(modulename,"c:\\notepad.exe"))
// return CallNextHookEx(hMouseHook, nCode, wParam, lParam); base=0;
while(VirtualQuery (base, &mbi, sizeof (mbi))>0)
{
if(mbi.Type==MEM_IMAGE)
ChangeFuncEntry((DWORD)mbi.BaseAddress,1);
base=(DWORD)mbi.BaseAddress+mbi.RegionSize;
}
//if(!BeenHooked)
{
/*BeenHooked=TRUE;
ChangeFuncEntry(GetModuleHandle(NULL),1);
ChangeFuncEntry(GetModuleHandle("imm32.dll"),1);
ChangeFuncEntry(GetModuleHandle("comctl32.dll"),1);
ChangeFuncEntry(GetModuleHandle("shell32.dll"),1);
ChangeFuncEntry(GetModuleHandle("comdlg32.dll"),1);
ChangeFuncEntry(GetModuleHandle("advapi32.dll"),1);
ChangeFuncEntry(GetModuleHandle("rpcrt4.dll"),1);
ChangeFuncEntry(GetModuleHandle("user32.dll"),1);
ChangeFuncEntry(GetModuleHandle("kernel32.dll"),1);
ChangeFuncEntry(GetModuleHandle("ntdll.dll"),1);
ChangeFuncEntry(GetModuleHandle("msvcrt.dll"),1);
//for msdev
ChangeFuncEntry(GetModuleHandle("devshl.dll"),1);
ChangeFuncEntry(GetModuleHandle("mfc42.dll"),1);
ChangeFuncEntry(GetModuleHandle("oleaut32.dll"),1);
ChangeFuncEntry(GetModuleHandle("lz32.dll"),1);
ChangeFuncEntry(GetModuleHandle("version.dll"),1);
ChangeFuncEntry(GetModuleHandle("ole32.dll"),1);
*/
/*UnChangeFuncEntry(GetModuleHandle(NULL));
UnChangeFuncEntry(GetModuleHandle("imm32.dll"));
UnChangeFuncEntry(GetModuleHandle("comctl32.dll"));
UnChangeFuncEntry(GetModuleHandle("shell32.dll"));
UnChangeFuncEntry(GetModuleHandle("comdlg32.dll"));
UnChangeFuncEntry(GetModuleHandle("advapi32.dll"));
UnChangeFuncEntry(GetModuleHandle("rpcrt4.dll"));
UnChangeFuncEntry(GetModuleHandle("user32.dll"));
UnChangeFuncEntry(GetModuleHandle("kernel32.dll"));
UnChangeFuncEntry(GetModuleHandle("ntdll.dll"));
UnChangeFuncEntry(GetModuleHandle("msvcrt.dll"));
//for msdev
UnChangeFuncEntry(GetModuleHandle("devshl.dll"));
UnChangeFuncEntry(GetModuleHandle("mfc42.dll"));
UnChangeFuncEntry(GetModuleHandle("oleaut32.dll"));
UnChangeFuncEntry(GetModuleHandle("lz32.dll"));
UnChangeFuncEntry(GetModuleHandle("version.dll"));
UnChangeFuncEntry(GetModuleHandle("ole32.dll"));
*/
}

 
   if ( wParam == WM_MOUSEMOVE ) {
 lpMouseHookStruct = (LPMOUSEHOOKSTRUCT)lParam;
 MousePoint=lpMouseHookStruct->pt;
 //if(old.x==MousePoint.x&&old.y==MousePoint.y)
 //  return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
 old.x=MousePoint.x;
 old.y=MousePoint.y;  hwnd=WindowFromPoint(MousePoint);
 ScreenToClient(hwnd,&MousePoint);
 rect.left=MousePoint.x-100;
 rect.top=MousePoint.y-3;
 rect.right=MousePoint.x+100;
 rect.bottom=MousePoint.y+3;
 InvalidateRect(hwnd,&rect,FALSE);
 //InvalidateRect(hwnd,NULL,FALSE);
 }
 return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}

Answer 2

BOOL ChangeFuncEntry(HMODULE hmodule,int level)
{
    PIMAGE_DOS_HEADER pDOSHeader;
    PIMAGE_NT_HEADERS pNTHeader;
    PIMAGE_IMPORT_DESCRIPTOR pImportDesc;
BOOL bSuccess = FALSE;
char buffer[1024],buffer1[1024];
    static int times=0;
//int i,j;
    BOOL you=FALSE;
DWORD MyFunc1; 
    DWORD dwProtect,temp; /*if(!strcmp(modulename,"c:\\notepad.exe"))
{
GetModuleFileName(hmodule,fname,64);
wsprintf(buffer,"module is %s.level=%d",fname,level);
MessageBox(NULL,buffer,"",MB_OK);
}*/
/*get system functions and my functions' entry*/
SysFunc1=(DWORD)GetProcAddress(GetModuleHandle("gdi32.dll"),"TextOutA");
MyFunc1= (DWORD)GetProcAddress(GetModuleHandle("hookdll.dll"),"MyTextOutA");
SysFunc2=(DWORD)GetProcAddress(GetModuleHandle("gdi32.dll"),"TextOutW");
MyFunc2= (DWORD)GetProcAddress(GetModuleHandle("hookdll.dll"),"MyTextOutW");
SysFunc3=(DWORD)GetProcAddress(GetModuleHandle("gdi32.dll"),"ExtTextOutA");
MyFunc3= (DWORD)GetProcAddress(GetModuleHandle("hookdll.dll"),"MyExtTextOutA");
SysFunc4=(DWORD)GetProcAddress(GetModuleHandle("gdi32.dll"),"ExtTextOutW");
MyFunc4= (DWORD)GetProcAddress(GetModuleHandle("hookdll.dll"),"MyExtTextOutW");

pDOSHeader=(PIMAGE_DOS_HEADER)hmodule;


wsprintf(buffer,"textoua are %ld %ld\n%ld %ld\n%ld %ld\n%ld %ld\n",SysFunc1,MyFunc1,SysFunc2,MyFunc2,SysFunc3,MyFunc3,SysFunc4,MyFunc4);
//MessageBox(NULL,buffer,"",MB_OK);
    if (IsBadReadPtr(hmodule, sizeof(PIMAGE_NT_HEADERS)))
        return FALSE;
    
    if (pDOSHeader->e_magic != IMAGE_DOS_SIGNATURE)
        return FALSE;
    
    pNTHeader=(PIMAGE_NT_HEADERS)((DWORD)pDOSHeader+(DWORD)pDOSHeader->e_lfanew);
    if (pNTHeader->Signature != IMAGE_NT_SIGNATURE)
        return FALSE;
    
    pImportDesc = (PIMAGE_IMPORT_DESCRIPTOR)((DWORD)hmodule+(DWORD)pNTHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
    
    if (pImportDesc == (PIMAGE_IMPORT_DESCRIPTOR)pNTHeader) 
return FALSE;
    
while (pImportDesc->Name) 
{
PIMAGE_THUNK_DATA pThunk;
strcpy(buffer,(char*)((DWORD)hmodule+(DWORD)pImportDesc->Name));
CharLower(buffer); /*if(!strcmp(buffer,"kernel32.dll")||
//!strcmp(buffer,"user32.dll")||
!strcmp(buffer,"imm32.dll")||
//!strcmp(buffer,"comctl32.dll")||
//!strcmp(buffer,"comdlg32.dll")||
!strcmp(buffer,"ntdll.dll")||
!strcmp(buffer,"advapi32.dll")||
!strcmp(buffer,"hookdll.dll"))
//MessageBox(NULL,buffer,"system dll",MB_OK);
//return 0;*/
if(strcmp(buffer,"gdi32.dll"))
{
pImportDesc++;
continue;
}
else //if(!strcmp(buffer,"gdi32.dll"))
{
//GetModuleFileName(hmodule,fname,64);
//wsprintf(buffer,"find gdi32 in %s",fname);
//wsprintf(buffer1,"level is %d",level);
//MessageBox(NULL,buffer,buffer1,MB_OK);
pThunk=(PIMAGE_THUNK_DATA)((DWORD)hmodule+(DWORD)pImportDesc->FirstThunk);
while (pThunk->u1.Function) 
{
if ((pThunk->u1.Function) == SysFunc1) 
{
//MessageBox(NULL,fname,"textoua textoua textoua textoua textoua",MB_OK);
if(!IsBadWritePtr((LPVOID)(&pThunk->u1.Function), sizeof(DWORD)))
(pThunk->u1.Function)=MyFunc1;
else
{
if(VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),PAGE_EXECUTE_READWRITE, &dwProtect))
{
(pThunk->u1.Function)=MyFunc1;
VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),dwProtect,&temp);
}
else
MessageBox(NULL,fname,"textoua UNABLE UNABLE UNABLE UNABLE ",MB_OK);
}
}
else if((pThunk->u1.Function) == SysFunc2)
{
//MessageBox(NULL,fname,"textouw textouw textouw textouw textouw",MB_OK);
if(!IsBadWritePtr((LPVOID)(&pThunk->u1.Function), sizeof(DWORD)))
(pThunk->u1.Function)=MyFunc2;
else
{
if(VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),PAGE_EXECUTE_READWRITE, &dwProtect))
{
(pThunk->u1.Function)=MyFunc2;
VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),dwProtect,&temp);
} else
MessageBox(NULL,fname,"textou2 UNABLE UNABLE UNABLE UNABLE ",MB_OK);
}
}
else if((pThunk->u1.Function) == SysFunc3)
{
//MessageBox(NULL,fname,"exttextoua exttextoua exttextoua exttextoua",MB_OK);
if(!IsBadWritePtr((LPVOID)(&pThunk->u1.Function), sizeof(DWORD)))
(pThunk->u1.Function)=MyFunc3;
else
{
if(VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),PAGE_EXECUTE_READWRITE, &dwProtect))
{
(pThunk->u1.Function)=MyFunc3;
VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),dwProtect,&temp);
} else
MessageBox(NULL,fname,"exttextoua UNABLE UNABLE UNABLE UNABLE ",MB_OK);
}
}
else if((pThunk->u1.Function) == SysFunc4)
{
//MessageBox(NULL,fname,"exttextouw exttextouw exttextouw exttextouw",MB_OK);
if(!IsBadWritePtr((LPVOID)(&pThunk->u1.Function), sizeof(DWORD)))
{
(pThunk->u1.Function)=MyFunc4;
VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),dwProtect,&temp);
}
else
{
if(VirtualProtect((LPVOID)(&pThunk->u1.Function), sizeof(DWORD),PAGE_EXECUTE_READWRITE, &dwProtect))
(pThunk->u1.Function)=MyFunc4;
else
MessageBox(NULL,fname,"exttextouw UNABLE UNABLE UNABLE UNABLE ",MB_OK);
}
}
pThunk++;
}
return 1;//already found gdi32
}
//else if(!strcmp(buffer,"imm32.dll")||!strcmp(buffer,"comctl32.dll")||!strcmp(buffer,"user32.dll"))
// ChangeFuncEntry(GetModuleHandle(buffer),0);
/*else
{
//if(recursive)
ChangeFuncEntry(GetModuleHandle(buffer),level+1);
}*/
pImportDesc++;
} 
    return bSuccess;
}

Answer 3

呵呵，就和金山词霸一样的，hook api后发送重绘消息

Answer 4

屏幕取词，baidu一下类似试例麻袋装，呵呵丰收了

Answer 5

强制刷新屏幕上鼠标旁边的一个矩型,然后HOOK API,看看它重绘的时候,调用了哪些函数.

Answer 6

GetCursor得到鼠标位置
WindowFromPoint得到鼠标下面的窗口.
GetWidnowText得到该窗口文字.