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Occurs before editing operations


  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 editstyle editing-style method (before changes are actually done).


viewerstyle Viewer-style methods do not generate this event.


See also:

OnChange event;

ReadOnly property.

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