判断指定进程名的进程是否存在

DWORD GetProcessidFromName(LPCTSTR name)
{
 PROCESSENTRY32 pe;
 DWORD id=0;
 HANDLE hSnapshot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
 pe.dwSize=sizeof(PROCESSENTRY32);
 if(!Process32First(hSnapshot,&pe))
  return 0;
 while(1)
 {
  pe.dwSize=sizeof(PROCESSENTRY32);
  if(Process32Next(hSnapshot,&pe)==FALSE)
   break;
  if(strcmp(pe.szExeFile,name)==0)
  {
   id=pe.th32ProcessID;
   
   break;
  }
 

 }
 CloseHandle(hSnapshot);
 return id;
}