TNoteBookStringsTabControl.DragOver procedure

Declaration

pascal

procedure DragOver(Source: TObject; X: Integer; Y: Integer; 
 State: TDragState; var Accept: Boolean); override

Not described here; this is what TControl.DragOver says of it:

Called when an object is dragged over this control; Determines whether a drop is acceptable, using the OnDragOver handler.

An OnDragOver handler is required, or any drop will be rejected (Accept becomes False).

When an OnDragOver handler is installed, Accept is set to True and can be changed by the handler.

Source can be either a TDragObject, or the dragged control.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.