virtual void CBCGPGridCtrl::GetItemCustomTooltip ( const CBCGPGridItemID &  id, CString &  strText, CString &  strDescription  ) const

protectedvirtual

Called by the framework to obtain the cell custom tooltip.

Parameters

id	The Grid cell identifier.
strText	The tooltip text. Leave it empty if you don't wish to display the toolip.
strDescription	The tooltip description.

You've to call EnableCustomToolTips() method to enable or disable the custom tooltips.