QT 强止杀进程

bool KillProcess(QString ProcessName)
{
 bool result = false;
 QString str1;

 HANDLE hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0) ;
 PROCESSENTRY32 pInfo;
 pInfo.dwSize = sizeof(pInfo);

 Process32First(hSnapShot, &pInfo);
 do
 {
  str1 = (QString::fromUtf16(reinterpret_cast<const unsigned short *>(pInfo.szExeFile)));
  if (str1 == ProcessName)
  {
   result = true;
   QString cmd;
   cmd = QString("taskkill /F /PID %1 /T").arg(pInfo.th32ProcessID);  

   system(cmd.toAscii());
  }
 } while(Process32Next(hSnapShot, &pInfo) );
 return result;
}