TRichView Reference | TRichViewEdit

TCustomRichViewEdit.OnChanging

Occurs before editing operations

type

  TRVChangingEvent = procedure (Sender: TCustomRichViewEdit;

    var CanEdit: Boolean) of object;

property OnChanging: TRVChangingEvent;

Set CanEdit to False to prevent editing.

This event occurs when:

▪user tries to edit text, or

▪calling any editing-style method (before changes are actually done).

Viewer-style methods do not generate this event.

See also:

▪OnChange event;

▪ReadOnly property.