This is a standard Oracle Application Express (APEX) calendar region component showing a weekly view on events with a time component. Using drag and drop, calendar events can be moved within the displayed week. In this example, dynamic actions are being executed to display messages based on drag and drop events. These advanced calendar events are not exposed in the builder, but can be accessed as a custom event type. When creating a dynamic action, choose Custom as the event type, Region as Selection Type the the calendar region as Region.

• The apexcalendardragdropstart event is being fired when the user starts dragging an event. The event data is being passed as the data attribute.
• The apexcalendardragdropfinish event is being fired after the drag and drop PL/SQL code has been successfully executed on the server.
• The apexcalendardragdroperror event is being fired when an error occurs on the server. The data attribute contains the server's error message.