Initial commit: MQL5 Scripts Collection (MetaTrader 5)

One Cancel Other(s) - script for MetaTrader 5/README.md

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+# 🚀 Unlock the Power of Trading!
+
+Welcome to this open-source trading project. Here you will find powerful tools to enhance your trading journey. If you find this project useful, please consider starring ⭐, sharing, or donating to support further development!
+
+---
+
+**Support the project:**
+- Star this repository on GitHub
+- Share it with your trading friends
+- [Donate here](https://www.paypal.com/donate/?hosted_button_id=YOUR_BUTTON_ID) to help us grow!
+
+---
+![Screenshot](script.png)
+
+## Source Files
+- `oncecancelotherscript.mq5`
+
+---
+> Made with ❤️ for the trading community.

One Cancel Other(s) - script for MetaTrader 5/oncecancelotherscript.mq5

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+//+------------------------------------------------------------------+
+//|                                        OnceCancelOtherScript.mq5 |
+//|                                            Copyright 2012, Rone. |
+//|                                            rone.sergey@gmail.com |
+//+------------------------------------------------------------------+
+#property copyright "Copyright 2012, Rone."
+#property link      "rone.sergey@gmail.com"
+#property version   "1.00"
+#property description "One Cancel Other(s) Script"
+//+------------------------------------------------------------------+
+//|                                                                  |
+//+------------------------------------------------------------------+
+#include <Trade\Trade.mqh>
+//+------------------------------------------------------------------+
+//|                                                                  |
+//+------------------------------------------------------------------+
+bool     end = false;
+//+------------------------------------------------------------------+
+//|                                                                  |
+//+------------------------------------------------------------------+
+int symbolOrders() {
+   int total = OrdersTotal();
+   
+   if ( total == 0 ) {
+      return(0);
+   }
+//---
+   int symTotal = 0;
+   for ( int i = 0; i < total; i++ ) {
+      ulong ticket;
+      
+      if ( (ticket = OrderGetTicket(i)) > 0 ) {
+         if ( OrderGetString(ORDER_SYMBOL) == _Symbol ) {
+            symTotal += 1;
+         }
+      }
+   }
+//---
+   return(symTotal);
+}
+//+------------------------------------------------------------------+
+//| Script program start function                                    |
+//+------------------------------------------------------------------+
+void OnStart() {
+//---
+   for ( ; !IsStopped() && !end; ) {
+      if ( PositionSelect(_Symbol) ) {
+         int total = OrdersTotal();
+         
+         for ( int i = 0; i < total; i++ ) {
+            ulong ticket;
+            
+            if ( (ticket = OrderGetTicket(i)) > 0 ) {
+               if ( OrderGetString(ORDER_SYMBOL) == _Symbol ) {
+                  CTrade trade;
+                  
+                  ResetLastError();
+                  if ( !trade.OrderDelete(ticket) ) {
+                     Print("OrderDelete of ", ticket, " is failed. Error #", GetLastError());
+                  }
+               }
+            }
+         }
+      }
+      if ( symbolOrders() == 0 ) {
+         end = true;
+      }
+   }
+//---   
+}
+//+------------------------------------------------------------------+