//+------------------------------------------------------------------+
//| All Order Cancel                                                 |
//+------------------------------------------------------------------+
#include <stdlib.mqh>
#include <WinUser32.mqh>

int start()
{
   if (IsTradeAllowed()==false) { Alert("Allow live trading is OFF. Check Option.");  return; }
   if(MessageBox("Del All Order?", "Del", MB_YESNO|MB_ICONQUESTION) != IDYES) return;

   int total=OrdersTotal();

   for(int i=total-1; i>=0; i--)
   {
        if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES) ==false) continue;
        if(OrderType() < 2) continue;
        while(true)
        {
            if( OrderDelete(OrderTicket()) !=TRUE ) Print("LastError = ", ErrorDescription(GetLastError()));
            else break;
        }
    }
   return;
}