TCustomListBox.BeforeDragStart procedure
Notifies the widgetset class that a Drag operation is starting.
Declaration
procedure BeforeDragStart; overrideDescription
BeforeDragStart is an overridden method in
TCustomListBox used to perform actions needed to start a drag
operation for the control. In TCustomListBox, this means that the DragStart
method in the widgetset class is called. No actions are performed in the
method if the Handle has not been allocated for the control.
BeforeDragStart is called when mouse up, down, and move messages are handled by the DragManager for an application.
See also
- BeforeDragStart
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.