TCustomEdit.RemoveHandlerOnChange procedure
Removes the specified OnChange event handler for the list of handlers in the control.
Declaration
procedure RemoveHandlerOnChange(const AnOnChangeEvent: TNotifyEvent)Arguments
AnOnChangeEvent | Event handler removed from the list of handlers in the control. |
Description
RemoveHandlerOnChange is a method used to remove the event handler
specified in
AnOnChangeEvent from the list of
OnChange
handlers for the control. AnOnChangeEvent is a
TNotifyEvent
instance, and it is used to locate and remove the
TMethod entry
registered for the handler. RemoveHandlerOnChange reverses the actions
performed in
AddHandlerOnChange, called when an OnChange event
handler is assigned to the control.
No actions are performed in the method when the internal OnChange method list has not been assigned (contains Nil).
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.