I’m adding a calendar to a row (row.getCalendars().add(myCalendar), myCalendar is extended from CalendarBase and getActivities() is implemented).
Later I’m addind activities to this calendar.
New activities are drawn in gantt when I move the mouse on this row.
What to I have to call that calendar activites are drawn immediately?
You can call gantt.getGraphics().redraw() for now. Ideally the UI cell that shows the row with its calendars should be listening to the calendars for changes and trigger the redraw itself. I will investigate this and might add a ticket for this bug / improvement.