Calendar.setDetailFunc

Installs a function which provides Pango markup with detail information for each day. Examples for such details are holidays or appointments. That information is shown below each day when #GtkCalendar:show-details is set. A tooltip containing with full detail information is provided, if the entire text should not fit into the details area, or if #GtkCalendar:show-details is not set.

The size of the details area can be restricted by setting the #GtkCalendar:detail-width-chars and #GtkCalendar:detail-height-rows properties.