UINT BCGM_ON_CHART_LEGEND_CONTENT_CREATED

The message is sent to the chart legend owner after legend was created or its content was updated.

Parameters

wParam	This parameter is not used
lParam	a pointer to CBCGPChartLegendVisualObject object.

Returns

The return value is ignored.

You should process this message to receive notifications from chart legend when a legend was created or updated.