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MQL4 文档
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Common Functions
ExpertRemove

ExpertRemove

ExpertRemove

此函数会停止专家顾问并将其从图表中卸载。

void  ExpertRemove();

返回值

无返回值。

注意

调用ExpertRemove()时，专家顾问不会立即被停止，只是设置了一个标志来停止EA的操作。也就是说，任何后续的事件都不会被处理，将调用OnDeinit()，然后专家顾问将被卸载并从图表中移除。

示例：

//+------------------------------------------------------------------+
//|                                            Test_ExpertRemove.mq5 |
//|                        Copyright 2009, MetaQuotes Software Corp. |
//|                                              https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "2009, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
input int ticks_to_close=20;// number of ticks before EA unload
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   Print(TimeCurrent(),": " ,__FUNCTION__," reason code = ",reason);
//--- "clear" comment
   Comment("");
//---
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
   static int tick_counter=0;
//---
   tick_counter++;
   Comment("\nBefore unloading expert advisor ",__FILE__," left",
           (ticks_to_close-tick_counter)," ticks");
//--- before
   if(tick_counter>=ticks_to_close)
     {
      ExpertRemove();
      Print(TimeCurrent(),": ",__FUNCTION__," expert advisor will be unloaded");
     }
   Print("tick_counter =",tick_counter);
//---
  }
//+------------------------------------------------------------------+

另请参阅

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