MQL4>MQL5:公共函数

void Alert(...)

void Alert(argument,...)

void Comment(...)

void Comment(argument,...)

int GetTickCount()

uint GetTickCount()

double MarketInfo(string symbol,
                  int type)

double MarketInfoMQL4(string symbol,
                      int type)
  {
   switch(type)
     {
      case MODE_LOW:
         return(SymbolInfoDouble(symbol,SYMBOL_LASTLOW));
      case MODE_HIGH:
         return(SymbolInfoDouble(symbol,SYMBOL_LASTHIGH));
      case MODE_TIME:
         return(SymbolInfoInteger(symbol,SYMBOL_TIME));
      case MODE_BID:
         return(Bid);
      case MODE_ASK:
         return(Ask);
      case MODE_POINT:
         return(SymbolInfoDouble(symbol,SYMBOL_POINT));
      case MODE_DIGITS:
         return(SymbolInfoInteger(symbol,SYMBOL_DIGITS));
      case MODE_SPREAD:
         return(SymbolInfoInteger(symbol,SYMBOL_SPREAD));
      case MODE_STOPLEVEL:
         return(SymbolInfoInteger(symbol,SYMBOL_TRADE_STOPS_LEVEL));
      case MODE_LOTSIZE:
         return(SymbolInfoDouble(symbol,SYMBOL_TRADE_CONTRACT_SIZE));
      case MODE_TICKVALUE:
         return(SymbolInfoDouble(symbol,SYMBOL_TRADE_TICK_VALUE));
      case MODE_TICKSIZE:
         return(SymbolInfoDouble(symbol,SYMBOL_TRADE_TICK_SIZE));
      case MODE_SWAPLONG:
         return(SymbolInfoDouble(symbol,SYMBOL_SWAP_LONG));
      case MODE_SWAPSHORT:
         return(SymbolInfoDouble(symbol,SYMBOL_SWAP_SHORT));
      case MODE_STARTING:
         return(0);
      case MODE_EXPIRATION:
         return(0);
      case MODE_TRADEALLOWED:
         return(0);
      case MODE_MINLOT:
         return(SymbolInfoDouble(symbol,SYMBOL_VOLUME_MIN));
      case MODE_LOTSTEP:
         return(SymbolInfoDouble(symbol,SYMBOL_VOLUME_STEP));
      case MODE_MAXLOT:
         return(SymbolInfoDouble(symbol,SYMBOL_VOLUME_MAX));
      case MODE_SWAPTYPE:
         return(SymbolInfoInteger(symbol,SYMBOL_SWAP_MODE));
      case MODE_PROFITCALCMODE:
         return(SymbolInfoInteger(symbol,SYMBOL_TRADE_CALC_MODE));
      case MODE_MARGINCALCMODE:
         return(0);
      case MODE_MARGININIT:
         return(0);
      case MODE_MARGINMAINTENANCE:
         return(0);
      case MODE_MARGINHEDGED:
         return(0);
      case MODE_MARGINREQUIRED:
         return(0);
      case MODE_FREEZELEVEL:
         return(SymbolInfoInteger(symbol,SYMBOL_TRADE_FREEZE_LEVEL));

      default: return(0);
     }
   return(0);
  }

int MessageBox(string text=NULL,
               string caption=NULL,
               int flags=EMPTY)

int MessageBox(string  text,
               string  caption=NULL,
               int     flags=0)

void PlaySound(string filename)

bool PlaySound(string filename)

void Print(...)

void Print(argument,...)

bool SendFTP(string filename,
             string ftp_path=NULL)

bool SendFTP(string filename,
             string ftp_path=NULL)

void SendMail(string subject,
              string some_text)

bool SendMail(string  subject,
              string  some_text)

void Sleep(int milliseconds)

void Sleep(int milliseconds)