Enum Processes Windows

main.cpp

#include <stdio.h>
#include <windows.h>
#include <tlhelp32.h>
#include <wtsapi32.h>

#pragma comment(lib, "wtsapi32")

void EnumProcToolhelp() {
    HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (snapshot == INVALID_HANDLE_VALUE)
        return;

    PROCESSENTRY32 pe;
    pe.dwSize = sizeof(pe);

    Process32First(snapshot, &pe);
    do {
        printf("PID: %6lu PPID: %6lu Threads: %3lu Process Name: %s\n",
            pe.th32ProcessID, pe.th32ParentProcessID, pe.cntThreads, pe.szExeFile);
    } while (Process32Next(snapshot, &pe));

    CloseHandle(snapshot);
}

void EnumProcWTS() {
    DWORD level = 1;
    DWORD count;
    WTS_PROCESS_INFO_EX* info;

    if (!WTSEnumerateProcessesEx(nullptr, &level, WTS_ANY_SESSION, (LPSTR*) & info, &count))
        return;

    for (DWORD i = 0; i < count; i++) {
        auto& p = info[i];
        printf("PID: %6lu Session: %lu Threads: %3lu Handles: %6lu Process Name: %s\n",
            p.ProcessId, p.SessionId, p.NumberOfThreads, p.HandleCount, p.pProcessName);
    }

    WTSFreeMemory(info);
}

int main() {
    EnumProcToolhelp();
    EnumProcWTS();
}