property Schedule.HighlightDate(Date as Date) as Variant
Highlights the specified date.

TypeDescription
Date as Date A DATE expression that specifies the date to be highlighted
Variant A long expression that specifies the color to be applied ( RGB color ), a string expression that specifies the list of colors to be applied, a uni-dimensional safe array of long expression that specifies the colors to be applied.
By default, the HighlightDate property returns an empty value, which indicates that no color is applied to the date. The highlight can be applied to the date shown in the calendar panel, or in the date header being shown on the schedule panel. Use the ShowHighlightDate property to specify whether the highlighted dates are shown on calendar or/and schedule panels. The HighlightDate property highlights/un-highlights the specified date with the giving color(s). 

The following VB6 samples shows how you can set the HighlightDate property:

The HighlightEvent property highlights dates in the calendar panel, when it contains events. The ScheduleHighlightEvent property specifies the visual appearance of dates with events in the schedule panel.