MQL4参考 检测 IsConnected

IsConnected

Checks connection between client terminal and server.

bool  IsConnected();

Returned value

It returns true if connection to the server was successfully established, otherwise, it returns false.

Example:

  if(!IsConnected())
    {
     Print("No connection!");
     return(0);
    }
  // Expert body that needs the connection opened
  // ...