you must not compile c5tip you have allready TC5ToolTip class on Fwh method default of c5calendar if ::oTooltip == nil // ::oToolTip := TC5Tip():New(Self ) ::oToolTip := TC5ToolTip():New( 0, 0, 1, 5, Self, .f., CLR_WHITE, RGB(228,229,240), RGB(100,100,100), 2, 2 ) endif METHOD MouseMove( nRow, nCol,...