Unit
acTrayIcon  

Hierarchy
TObject  
|  
TPersistent  
|  
TComponent  
|  
TacComponent  
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TacFormHookComponent  
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TacHFormHookComponent  
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TacCustomAppHookComponent  
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TacHFormHookComponentWatchCaption  
|  
TacCustomCaptionButton  
|  
TacTrayIcon