internal static bool NotifyPreviewKeydown(TextSurfaceEventListener listener, char c)
{
if (listener.IsRegisterPreviewKeyDownChar(c))
{
if (listener.PreviewRegisteredKeyDown != null)
{
TextDomEventArgs e = new TextDomEventArgs(c);
listener.PreviewRegisteredKeyDown(listener, e);
return(e.PreventDefault);
}
}
return(false);
}