VC6.0#include <windows.h>
//#include <conio.h>
#include <stdio.h>
int main(int argc, char* argv[])
{
SC_HANDLE hScHandle=0;        
SC_HANDLE hSerHandle=0 ;
 
hScHandle = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(hScHandle!=NULL)hSerHandle=OpenService(hScHandle,"Telephony", 
SRVICE_STOP|SERVICE_QUERY_STATUS); printf("%d",hSerHandle);
  return 0;
}OPENSERVICE()怎么返回句柄为0