Re: ICQ messengers unique idetification

Hi Sandipan,

I suggest you can enumerate all the current running threads in the
system(Thread32First/Thread32Next), retrieve the target thread's parent
process ID from the corresponding THREADENTRY32 structure. Then use the API
GetModuleBaseName to get that exe's file name form its process ID(using the
OpenProcess to get its handle from the ID), for example:

#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <psapi.h>
#include <tlhelp32.h>
...
...
//already having the target threadID

TCHAR szImageName[MAX_PATH] = TEXT("<unknown>");
DWORD processID = NULL;

HANDLE h = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
if (h != INVALID_HANDLE_VALUE) {
  THREADENTRY32 te;
  te.dwSize = sizeof(te);
  if (Thread32First(h, &te))
     do{
          if(te.th32ThreadID == threadID)
          {
               processID = te.th32OwnerProcessID;
               break;
          }
       }while (Thread32Next(h, &te));
 }
CloseHandle(h);
...
HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
FALSE, processID );
GetModuleBaseName( hProcess, NULL, szImageName,
sizeof(szImageName)/sizeof(TCHAR) );
CloseHandle( hProcess );
...

I hope the above information helps, if you have any questions or concerns,
please do not hesitate to let me know. I am standing by to help you.

Thanks!

Best regards,

Gary Chang
Microsoft Online Community Support
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