TControl.BeforeDragStart procedure
Performs actions needed before a drag operation is started for the control.
Declaration
procedure BeforeDragStart; virtualDescription
BeforeDragStart has an empty implementation in
TControl. The virtual method can be overridden in descendent
classes to perform the actions needed. Some common actions include updating
control flags or checking for a valid Handle before starting the drag
operation.
BeforeDragStart is called from the DragStart method in TDragManager.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.