captionbutton RefreshButton method
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Applies to
acCaptionButton component and all successors of TacCustomCaptionButton (acAppAutoRun, acTrayIcon, acFormHelp, acFormTopmost and acFormRoller).  

procedure RefreshButton;  

The RefreshButton method repaints the custom caption button on the title bar. For example, RefreshButton method automatically executes when caption text changes.  

See also
RefreshNCArea method.