treecombobox ParentShowHint property
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Applies to
acEdit, acNumberEdit, acIPEdit, acLabeledComboBox, acMRUComboBox, acImagesComboBox and TacTreeComboBox components as subproperty of AttachedLabel structure.  

property ParentShowHint: Boolean;  

The ParentShowHint property determines where an attached label looks to find out if its Help Hint should be shown.  
Use ParentShowHint to ensure that all the controls on a form either uniformly show their Help Hints or uniformly do not show them.  
If ParentShowHint is true, the control uses the ShowHint property value of its parent. If ParentShowHint is false, the control uses the value of its own ShowHint property.  
To provide Help Hints for only selected controls on a form, set the ShowHint property for those controls that should have Help Hints to true, and ParentShowHint becomes false automatically.  

Enable or disable all Help Hints for the entire application using the ShowHint property of the application object.  

See also
ShowHint and Hint properties;  
acFormHelp and acFormHints components.