GLib.OptionErrorFunc

function onOptionErrorFunc(context: GLib.OptionContext, group: GLib.OptionGroup, data: void): void {
}

The type of function to be used as callback when a parse error occurs.

context: The active GLib.OptionContext
group: The group to which the function belongs
data: User data added to the GLib.OptionGroup containing the option when it was created with GLib.OptionGroup.new