void CBCGPChartStockSeries::SetCustomStockValueCallback	(	BCGPCHART_STOCK_CALLBACK	pfn,
		BOOL	bRedraw = FALSE
	)

Sets a callback to calculate custom stock values.

Set a callback to calculate custom stock values if you need to display a line chart based on custom stock values (calculated at the application level from the real stock data).

It can be useful if you do not derive a class from CBCGPChartStockSeries, but have to display the stock chart as a line based on custom values. The callback implementation may look like this:

Copy

CBCGPChartValue CALLBACK ChartStockCallbackFunc(int nDataPointIndex, CBCGPChartStockSeries* pSeries)

{

CBCGPChartStockData data = pSeries->GetStockDataAt(nDataPointIndex);

return CBCGPChartValue((data.m_dblHigh + data.m_dblLow) / 2);

}

void CChartStockView::OnInitialUpdate()

{

// stock chart setup....

pStockSeries->SetCustomStockValueCallback(ChartStockCallbackFunc);

}

Parameters

pfn	A pointer to a callback.
bRedraw	TRUE - redraw the chart immediately