BOOL EnumPrinterDrivers(
  LPTSTR pName,        // printer server name
  LPTSTR pEnvironment, // environment name
  DWORD Level,         // information level
  LPBYTE pDriverInfo,  // driver information buffer
  DWORD cbBuf,         // size of driver information buffer
  LPDWORD pcbNeeded,   // bytes received or required
  LPDWORD pcReturned   // number of drivers received
);
 

 
DECLARE INTEGER EnumPrinterDrivers IN winspool.drv;
    STRING    pName,;
    STRING    pEnvironment,;
    INTEGER   Level,;
    STRING  @ pDriverInfo,;
    INTEGER   cdBuf,;
    INTEGER @ pcbNeeded,;
    INTEGER @ pcReturned