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

BOOL GetProcessInfo(DWORD dwProcessId, PROCESSENTRY32* pProcessInfo) {
    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot == INVALID_HANDLE_VALUE) {
        return FALSE;
    }

    PROCESSENTRY32 pe32 = { 0 };
    pe32.dwSize = sizeof(PROCESSENTRY32);

    BOOL bProcessFound = FALSE;
    if (Process32First(hSnapshot, &pe32)) {
        do {
            if (pe32.th32ProcessID == dwProcessId) {
                bProcessFound = TRUE;
                if (pProcessInfo != NULL) {
                    memcpy(pProcessInfo, &pe32, sizeof(PROCESSENTRY32));
                }
                break;
            }
        } while (Process32Next(hSnapshot, &pe32));
    }

    CloseHandle(hSnapshot);

    return bProcessFound;
}

int main() {
    DWORD processId = 4916;  // 対象プロセスのIDを指定する
    PROCESSENTRY32 pe32 = { 0 };
    pe32.dwSize = sizeof(PROCESSENTRY32);
    if (GetProcessInfo(processId, &pe32)) {
        printf("Process Name: %ws\n", pe32.szExeFile);
        printf("Process ID: %lu\n", pe32.th32ProcessID);
        printf("Parent Process ID: %lu\n", pe32.th32ParentProcessID);
    }
    else {
        printf("Process not found.\n");
    }
    return 0;
}