C++判断进程id是否存在

//判断进程id是否存在//@param:process_id:需要传入的进程id值//return:True:存在，False:不存在BOOL isExistProcess(DWORD process_id){HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);if (INVALID_HANDLE_VALUE == hSnapshot) {return NULL;}PROCESSENTRY32 pe = { sizeof(pe) };for (BOOL ret = Process32First(hSnapshot, &pe); ret; ret = Process32Next(hSnapshot, &pe)) {if (pe.th32ProcessID == process_id){return TRUE;}}CloseHandle(hSnapshot);return FALSE;}