根据进程名判断该进程是否存在(C++)

直接调用方法就ok

代码如下：

bool g_ProcessRun = false;

//wchar_t 转 string;
void Wchar_tToString(string& szDst, wchar_t* wchar)
{
  wchar_t* wText = wchar;
  DWORD dwNum = WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, NULL, 0, NULL, FALSE);
  char* psText;
  psText = new char[dwNum];
  WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, psText, dwNum, NULL, FALSE);
  szDst = psText;
  delete[]psText;
}

//判断是否进程运行
//param1:进程名
bool isProcessRun(string process_name)
{
  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)) {
    wchar_t* process_str = pe.szExeFile;
    string current_process_name;
    Wchar_tToString(current_process_name, process_str);
    if (current_process_name == process_name) {
      g_ProcessRun = true;
      break;
    }
  }
  CloseHandle(hSnapshot);
  return g_ProcessRun;
}