public delegate bool BooleanHandler( 
   object instance,
   EventArgs args
)

Parameters

instance

The instance.

args

The System.EventArgs instance containing the event data.

Return Value

Target Platforms: 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

Reference

BooleanHandler Members
Concept.Components.Wpf Namespace