$main->AddCombobox(     
        -name   => "Dropdown",
        -width  => 120,
        -height => 110,
        #-tabstop=> 1,
        -pos => [5,160],
        -text => "Hello World",
        -InsertItem =>"Test",
        -InsertItem =>"Test2",
        -InsertItem =>"Test2",
        );