By default, the ShowHighlightEvent property is true, which indicates that the dates with events or appointments appear as bold in the calendar panel. You can use the ShowHighlightEvent property to prevent highlighting the the dates with events or appointments.  You can use the HighlightEvent object to highlight the dates with events or appointments in the calendar panel. The GroupHighlightEvent property specifies if events are highlighted using the HighlightEvent property ( False ), or using the  CalendarHighlightEvent property of the Group that event belongs to (True). The ScheduleHighlightEvent property specifies the visual appearance of dates with events in the schedule panel.

Using the Highlight object a date with events can combine one or more of the following options:

• bold, Bold property renders as bold text
• italic, Italic property renders as italic text
• underline, Underline property underlines the text
• strikeout, StrikeOut property shows the text with a horizontal line through its center
• change the font size, FontSize property indicates the size of the font to display the text
• change the font, using the Font property
• change the text's foreground color, using the ForeColor property
• change the text's background color, using the BackColor property
• shows a pattern using the Pattern property