: Used by the plugin to pass data back into AmiBroker. Structure of a Tick/Bar Update
Finally, when developing a trading interface alongside a data plugin, the two must be kept separate. It is strongly recommended to follow the design of the open-source IBController, which provides a clear separation between these concerns.
Launch AmiBroker. Navigate to , select your custom data source from the data source dropdown menu, and initialize your custom data feed.
To build a reliable data plugin, your project structure should separate network logic from AmiBroker's structural requirements. Below is the blueprint of a production-grade data plugin using modern C++. Defining Data Structures ( Plugin.h ) amibroker data plugin source code top
#define PLUGIN_NAME "My Data Plugin" #define VENDOR_NAME "My Company" #define THIS_PLUGIN_TYPE PLUGIN_TYPE_DATA
pInfo->ulSize = sizeof(PluginInfo); pInfo->ulVersion = AB_PLUGIN_VERSION; pInfo->ulPluginType = PLUGIN_TYPE_DATA; strcpy(pInfo->szPluginName, "My Top Data Source");
In this architecture, the Python script (like the vendor_class_wrapper.py in some projects) connects to the broker's API, fetches data, and builds bars. It then sends this formatted data as a JSON message over WebSocket to the C++ plugin. The plugin, in turn, receives this message, parses the JSON packet in situ for memory performance, and feeds it to AmiBroker. This setup allows the plugin to remain broker-agnostic, while the Python "adapters" can be swapped out or modified to connect to any data source. : Used by the plugin to pass data back into AmiBroker
Never fetch data on the main AmiBroker thread. If your API call hangs, AmiBroker will freeze. Use a background worker thread to pull data and a thread-safe queue to pass it to the GetQuotes function. 2. Backfill Logic
A background thread initialized inside the plugin's Notify function. This thread runs an event loop connecting to your data socket (e.g., via libwebsockets or cpprestsdk ).
Notify : Receives notifications from AmiBroker regarding database loads, unloads, or settings changes. 2. Available Source Code Templates Launch AmiBroker
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The official way to build a plugin is using the ADK, which includes the C++ API definitions and working examples for both indicator and data DLLs.
I can provide more for your chosen API if you provide those details!