'Declaration Public Delegate Sub UltraWebToolbar.VisibleChangingEventHandler( _ ByVal sender As Object, _ ByVal vce As VisibleChangingEvent _ )
public delegate void UltraWebToolbar.VisibleChangingEventHandler( object sender, VisibleChangingEvent vce )
This is a cancelable event.
VisibleChangingEventTarget Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2