gLanguageSelector is a tool to make easy selecting language, without code.
It is a .NET control.
You do not have to use this tool. You can code your own language selecting scenario. An example is available in sample project.
Put it on a form, adjust dimensions to see all languages and set BackgroudColor for a better look.
More information about multi language system: Look here.
View before configuration file
Languages are defined in a configuration file. If configuration file is not loaded yet, gLanguageSelector looks like above.
View after configuration file
After configuration file is loaded, it looks like above. Check that language names are in visible area, adjust dimensions if necessary.
Note that configuration file is loaded by gGlobalSettings control or by your code.
More information about configuration file is here.