OrderCloseを使用します。
例
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						//+------------------------------------------------------------------+ //|                                                     test_scr.mq4 | //|                                          Copyright 2020, Hiroshi | //|                                             https://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "Copyright 2020, Hiroshi" #property link      "https://www.mql5.com" #property version   "1.00" #property strict #property script_show_inputs //パラメーター入力ウインドウ input int ticket; //チケット番号 //+------------------------------------------------------------------+ //| Script program start function                                    | //+------------------------------------------------------------------+ void OnStart()   { //---    bool ret_select;	//選択状況    ret_select = OrderSelect( ticket,SELECT_BY_TICKET);	//ポジションの選択    bool ret_close;    ret_close = OrderClose( ticket, OrderLots(), OrderClosePrice(),3);//決済注文    MessageBox("選択状況 = " + ret_select + " 決済状況=" + ret_close);   } //+------------------------------------------------------------------+  | 
					
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
  
  
  
  
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