getHelp
Returns a formatted, translated help text for the given context. To obtain the text produced by --help, call g_option_context_get_help (context, TRUE, NULL). To obtain the text produced by --help-all, call g_option_context_get_help (context, FALSE, NULL). To obtain the help text for an option group, call g_option_context_get_help (context, FALSE, group).
Return
A newly allocated string containing the help text
Since
2.14
Parameters
mainHelp
if true, only include the main group
group
the #GOptionGroup to create help for, or null