Configuring Drop On events

To configure events in the Drop On Events property:

With a form open and in Design Mode, select the component for which you want to enable drop-on handling.
In the Component property sheet for that component, select the Events tab.
Select the Drop On Events property and click the ellipsis (...) button to its right.
Use the Edit Drop On Events dialog box to assign one or more events to the Drop On Events property.

Note: For the drag-and-drop operation to work, you must have a corresponding Drag From Event with the same event configured.