Amibroker Data Plugin Source Code Top -

A top plugin is configurable. The source code must register a Windows property sheet.

ABAPI void __stdcall PluginSetting(HWND hParent)
// Create dialog from .rc resource
    DialogBox(hInst, MAKEINTRESOURCE(IDD_SETUP), hParent, ConfigDialogProc);
INT_PTR CALLBACK ConfigDialogProc(HWND hDlg, UINT msg, WPARAM w, LPARAM l)
case WM_INITDIALOG:
LoadSettingsFromRegistry(); // Top plugins use Registry or JSON config
break;
case WM_COMMAND:
SaveSettingsToRegistry();
break;

Pro tip from top developers: Store connection strings and API keys encrypted via CryptProtectData to avoid plain-text credentials in the registry. amibroker data plugin source code top

| Pitfall | Amateur Code | Top Code Solution | | :--- | :--- | :--- | | Deadlocks | Using WaitForSingleObject inside GetQuotesEx | Using TryEnterCriticalSection with fallback E_PENDING | | Missing Splits/Divs | Returning only price data | Querying separate corporate action endpoint | | Large Tick Data | Allocating huge arrays on heap | Memory-mapped files + virtual memory | | Reconnection Logic | Manual reset required | Automatic WebSocket ping/pong with exponential backoff |

The entry point is a C/C++ DLL that exports specific functions AmiBroker calls during initialization. Here is the canonical structure of a high-performance plugin:

// Top-tier plugin structure
#include "ABPlugin.h" // AmiBroker SDK Headers
// Global handles for thread safety
HANDLE g_hStopEvent;
CRITICAL_SECTION g_csDataQueue; A top plugin is configurable
// Required Export: GetPluginInfo
ABAPI void __stdcall GetPluginInfo(PluginInfo *pInfo)
pInfo->ulSize = sizeof(PluginInfo);
pInfo->ulVersion = AB_PLUGIN_VERSION;
pInfo->ulPluginType = PLUGIN_TYPE_DATA;
strcpy(pInfo->szPluginName, "My Top Data Source");

// Required Export: CreateDataPlugin
ABAPI IDataPlugin* __stdcall CreateDataPlugin()
return new MyCustomDataPlugin();

Why this is "top" quality: Notice the CRITICAL_SECTION. Top developers ensure thread safety because AmiBroker calls the plugin from multiple threads (UI refresh, backfill, real-time tick gathering).

This is what separates basic plugins from "top" ones.

QuoteEx quote; // Stack allocated - auto cleanup
quote.dClose = 100.50;
g_pDataSite->AddRealTimeQuote("msft", "e); // Plugin site copies data

Or, for high-frequency scenarios:

// Static pre-allocated pool
QuoteEx* GetQuoteFromPool()
static QuoteEx pool[10000];
    static int idx = 0;
    return &pool[idx++ % 10000];

// Inside GetQuotesEx - simplified
if (action == ACTION_GET_HISTORY) 
    http_client.fetch(symbol, interval);
    for (int i = 0; i < barCount; i++) 
        pQuotes[i].fOpen = bars[i].open;
        pQuotes[i].fHigh = bars[i].high;
        // ... etc

Top feature: Dynamic symbol registration via websocket discovery.