alias Gio::SettingsGetMapping

Overview

The type of the function that is used to convert from a value stored in a #GSettings to a value that is useful to the application.

If the value is successfully mapped, the result should be stored at @result and %TRUE returned. If mapping fails (for example, if @value is not in the right format) then %FALSE should be returned.

If @value is %NULL then it means that the mapping function is being given a "last chance" to successfully return a valid value. %TRUE must be returned in this case.

Alias Definition

GLib::Variant, Pointer(Void)? -> Bool

Defined in:

lib/gi-crystal/src/auto/gio-2.0/gio.cr