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Advanced Query Builder for RAD Studio VCL

On-line Documentation

OnAddRemoveLink event

Applies to

TCustomQueryBuilder component




  TQBAction = (qbaAdd, qbaRemove);

  TAddRemoveLinkEvent = procedure(Sender: TObject; Link: TQBLink; Action: TQBAction; var Accept: Boolean); of object;


property OnAddRemoveLink: TAddRemoveLinkEvent;




The OnAddRemoveLink event takes place when a link is added/removed to/from the component work area. The Link parameter defines the properties of the link to add/remove. Action defines if the link is added or removed. Output parameter Accept allows you to forbid or permit action.


See also:

OnAddRemoveTable event