BCGControlBar Pro for MFC
UINT BCGM_PROPERTYLIST_SORTING_MODE_CHANGED

The message is sent to the owner of property list control (CBCGPPropList) when the user clicks either "Alphabetic" or "Categorized" button on the property grid toolbar.

Parameters
wParamTRUE if the property list control is in alphabetic mode; FALSE if in categorized mode.
lParamthis parameter is ignored.
Returns
the return value is ignored.