__declspec(dllexport) int GetQuote( const char *symbol, Quote *quote )
The heart of a data plugin is the function responsible for providing quotes to AmiBroker: GetQuotes() / GetQuotesEx() Crucial Performance Tip : The plugin should examine the nLastValid
AmiBroker uses a custom 64-bit integer format to pack date and time (including seconds or milliseconds). You must convert standard UNIX timestamps or ISO strings into AmiBroker's packed format using ADK helper functions like PackDate .
When a new price tick arrives in your background thread, parse it and notify AmiBroker using the Windows messaging API: amibroker data plugin source code top
If you are writing source code, emulate these :
Set your Visual Studio project to "Release" and "x64" (or x86 depending on your AmiBroker version).
parameter (the last valid bar AmiBroker already has) and only fetch missing data from that point forward. Data Control parameter (the last valid bar AmiBroker already has)
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.
GetPluginInfo : Returns the plugin name, developer information, version, and the type of plugin (Data, Indicator, or Order Management).
Not all plugins are real-time. Many developers need to create plugins that import historical data from custom text formats or binary files. The AmiBroker community has long maintained open-source examples of custom ASCII importers. 4. Implementation Best Practices
The journey begins with a single decision: the choice of architecture. Whether you opt for the raw power and control of C++ or the rapid development and accessibility of .NET, you are not alone. A vibrant community of developers has paved the way, sharing their code and insights openly. Your next step is to dive into these resources, learn from the masters, and start building the plugin that will take your algorithmic trading to the next level.
PLUGIN_API int WINAPI GetQuotesEx(LPCTSTR ticker, LPCTSTR database, QUOTETYPE qType, DWORD dtStart, DWORD dtEnd, PDWORD pSize, PQUOTE pQuotes, LPDWORD pResult) // Top-tier plugins check dtStart for "last update" vs "full refresh" static int callCount = 0; if (callCount == 0) // Do one-time connection to your data source init_websocket_client();
message to notify AmiBroker when new data arrives, triggering a chart refresh. 4. Implementation Best Practices