If you are giving the user a small list of choices then stick with the radiobuttons. However, if you will want want to use the combobox for long lists. An user can select one option. I prefer the type of combobox with an instruction inside as a header.
In 13. Frames, you'll learn to add an action to the ComboBox.use Prima qw(Application Themes Buttons ComboBox Label); require "/home/reinier/mcMessage.pl"; # code 7. Messagewindow $mw = Prima::MainWindow-> create( text=> "Combobox", size => [375, 250], icon => Prima::Icon-> load('icon.png'), skin => 'flat', );# If the collection in a combo box is long enough, a scroll bar will appear to accommodate it. $cb1 = $mw-> insert( "ComboBox", pack => { fill => 'none', side => 'top', pad => 15 }, size => [200, 30], name => 'Please, select a color', items => [ 'Apricot', 'Beige', 'Black', 'Blue', 'Brown', 'Cyan', 'Green', 'Grey', 'Lavender', 'Lime', 'Magenta' ], style => (cs::DropDown), ); $mw-> insert('Prima::Button' => pack => { fill => 'none', side => 'top', pad => 15 }, size => [100, 30], text => 'Evaluate', onClick => sub { mcMessage(300, 100, "Values", "Name widget: " . $cb1->name . "\nSelected option: " . $cb1->text); } ); run Prima;