protected static bool RaiseBeginningEvent(DrawOperation op)
{
var e = new DrawOperationBeginningEventArgs(op);
BeginningEvent.Raise(e);
return(!e.Cancel);
}
protected static void RaiseEndedEvent(DrawOperation op)
{
EndedEvent.Raise(new DrawOperationEventArgs(op));
}
protected static void RaiseBeganEvent(DrawOperation op)
{
BeganEvent.Raise(new DrawOperationEventArgs(op));
}