Type Alias GSettingsGetMapping

pub type GSettingsGetMapping = Option<unsafe extern "C" fn(value: *mut GVariant, result: *mut gpointer, user_data: gpointer) -> gboolean>;

GSettingsGetMapping: @value: the #GVariant to map, or %NULL @result: (out): the result of the mapping @user_data: (closure): the user data that was passed to g_settings_get_mapped()

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.

Returns: %TRUE if the conversion succeeded, %FALSE in case of an error

Aliased Type

enum GSettingsGetMapping {
    None,
    Some(unsafe extern "C" fn(*mut _GVariant, *mut *mut c_void, *mut c_void) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut _GVariant, *mut *mut c_void, *mut c_void) -> i32)

Some value of type T.