Enable/Disable toolbar buttons on the fly

Question

Hi All Is there anyway to enable/disable the toolbar buttons on the fly as like in MFC/Delphi which helps centralizing this process?Let's i have a toolbar button ToolbarButtonSave which can be enabled/disabled inside the Edit control TextChanged event handler?I'm looking for a way which Toolbar can ask itself to enable/disable its buttons as in MFC? Thanks and Regards Krishna