How to obtain list of thread handles from a win32 process?

Question

Is it possible to get a list of thread handles at any given time for the current process on win32 (in c++)?

Answer 1

You will find this article helpful. It gives the code for thread enumeration with the small nuances that come with using the tool help library.

For convenience (lifted from the article):

#include <stdio.h>
#include <windows.h>
#include <tlhelp32.h>

int __cdecl main(int argc, char **argv)
{
 HANDLE h = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
 if (h != INVALID_HANDLE_VALUE) {
  THREADENTRY32 te;
  te.dwSize = sizeof(te);
  if (Thread32First(h, &te)) {
   do {
     if (te.dwSize >= FIELD_OFFSET(THREADENTRY32, th32OwnerProcessID) +
                      sizeof(te.th32OwnerProcessID)) {
       printf("Process 0x%04x Thread 0x%04x\n",
             te.th32OwnerProcessID, te.th32ThreadID);
     }
   te.dwSize = sizeof(te);
   } while (Thread32Next(h, &te));
  }
  CloseHandle(h);
 }
 return 0;
}

Answer 2

• Win32: How do I enumerate all the threads belonging to a process in C++?
• OpenThread to convert identifiers to handles