$Main = Win32::GUI::Window->new(
   -name  => 'Main',
   -title => $appname,
   -pos   => [10,10],
   -menu     => $MainMenu,
   -maxsize => [500, 660],
   -onTerminate => \&Exit_Click,
   -onMinimize => \&DoHideMe_Click,
   -onTimer     => sub{TimedOperation_Timer()},
   -size  => [500,650], );