From 58acc52fa2ae0285acca01107540df8055e3579e Mon Sep 17 00:00:00 2001
From: Vyacheslav Demidyuk <vdemydiuk@gmail.com>
Date: Fri, 24 Jan 2025 23:33:38 +0200
Subject: [PATCH] PyMtApi5: implemented function CopyBuffer

---
 PyMtApi5/client.py       | 13 +++++++++++++
 PyMtApi5/mt5apiclient.py |  6 +++---
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/PyMtApi5/client.py b/PyMtApi5/client.py
index 5ba34a4b..09f46272 100644
--- a/PyMtApi5/client.py
+++ b/PyMtApi5/client.py
@@ -45,6 +45,7 @@ class Mt5ApiApp:
             "MarketBookAdd": self.process_market_book_add,
             "MarketBookRelease": self.process_market_book_release,
             "MarketBookGet": self.process_market_book_get,
+            "CopyBuffer": self.process_copy_buffer,
         }
 
     def on_disconnect(self, error_msg=None):
@@ -278,6 +279,18 @@ class Mt5ApiApp:
         result = mtapi.market_book_get(symbol)
         print(f"> MarketBookGet: response = {result}")
 
+    def process_copy_buffer(self, mtapi, parameters):
+        pieces = parameters.split(" ", 3)
+        if len(pieces) != 4 or not pieces[0] or not pieces[1] or not pieces[2] or not pieces[3]:
+            print(f"! Invalid parameters for command CopyBuffer: {parameters}")
+            return
+        indicator_handle = int(pieces[0])
+        buffer_num = int(pieces[1])
+        start_pos = int(pieces[2])
+        count = int(pieces[3])
+        result = mtapi.copy_buffer(indicator_handle, buffer_num, start_pos, count)
+        print(f"> CopyBuffer: response = {result}")
+
     def mtapi_command_thread(self, mtapi):
         while mtapi.is_connected():
             filename = "client.cmd"
diff --git a/PyMtApi5/mt5apiclient.py b/PyMtApi5/mt5apiclient.py
index a4fd2e4e..4c2c0323 100644
--- a/PyMtApi5/mt5apiclient.py
+++ b/PyMtApi5/mt5apiclient.py
@@ -244,9 +244,9 @@ class Mt5ApiClient:
         return self.__send_command(self.__get_default_expert(), Mt5CommandType.BarsCalculated, cmd_params)
 
     # CopyBuffer
-    def copy_buffer(self):
-        # TODO
-        pass
+    def copy_buffer(self, indicator_handle: int, buffer_num: int, start_pos: int, count: int):
+        cmdParams = {"IndicatorHandle": indicator_handle , "BufferNum": buffer_num, "StartPos": start_pos , "Count": count};
+        return self.__send_command(self.__get_default_expert(), Mt5CommandType.CopyBuffer, cmdParams)
 
     # CopyRates
     def copy_rates(self):