[Overview][Constants][Types][Classes][Procedures and functions][Variables] Reference for unit 'Classes' (#rtl)

TStringList.OnChanging

Event triggered when the list is about to be modified.

Declaration

Source position: classesh.inc line 579

public property TStringList.OnChanging: TNotifyEvent
  read FOnChanging
  write FOnChanging;

Description

OnChangingcan be assigned to respond to changes that will occurred in the list. The handler is called whenever strings will be added, moved, modified or deleted from the list.

The Onchangingevent is triggered before the modification will take place. When the modification has happened, an TstringList.OnChangeevent occurs.

See also

TStringList.OnChange

  

Event triggered after the list was modified.