RAD Studio VCL Reference
TButtonItemActionLink.IsImageIndexLinked Method

Indicates whether the image index for the action and the client are linked.

function IsImageIndexLinked: Boolean; override;
virtual __fastcall Boolean IsImageIndexLinked();

TActionLink descendants call IsImageIndexLinked to determine whether they need to propagate changes to the ImageIndex property of the action so that they are reflected by the client object. When IsImageIndexLinked returns true, the action controls the ImageIndex property: Changes to the ImageIndex property of the action are reflected by changes to the corresponding property of the client object. When IsImageIndexLinked returns false, the client object does not reflect the ImageIndex property of its action, either because it does not have a corresponding property, or, more commonly, because it manages the value of its corresponding property independently. 

As implemented in TActionLink, IsImageIndexLinked merely checks that the Action property specifies a descendant of TCustomAction (that is, it is an action that has an ImageIndex property). Descendant classes override IsImageIndexLinked to determine whether the ImageIndex property is linked with the appropriate client property. 


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