gtkCalendarNew(show = TRUE)
gtkCalendarSelectMonth(object, month, year)
gtkCalendarSelectDay(object, day)
gtkCalendarMarkDay(object, day)
gtkCalendarUnmarkDay(object, day)
gtkCalendarClearMarks(object)
gtkCalendarGetDisplayOptions(object)
gtkCalendarSetDisplayOptions(object, flags)
gtkCalendarDisplayOptions(object, flags)
gtkCalendarGetDate(object)
gtkCalendarFreeze(object)
gtkCalendarThaw(object)
gtkCalendar(show = TRUE)GtkCalendar is a widget that displays a calendar, one month at a time. 
It can be created with gtkCalendarNew.
  
The month and year currently displayed can be altered with 
gtkCalendarSelectMonth. The exact day can be selected from the displayed 
month using gtkCalendarSelectDay.
  
To place a visual marker on a particular day, use gtkCalendarMarkDay 
and to remove the marker, gtkCalendarUnmarkDay.
Alternative, all marks can be cleared with gtkCalendarClearMarks.
  
The way in which the calendar itself is displayed can be altered using
gtkCalendarSetDisplayOptions.
  
The selected date can be retrieved from a GtkCalendar using
gtkCalendarGetDate.gtkCalendar is the equivalent of gtkCalendarNew.