diff -r 48780e181b38 -r 578be2adaf3e Symbian3/PDK/Source/GUID-6690CEFF-AE08-4881-AF52-70C097EB2871.dita --- a/Symbian3/PDK/Source/GUID-6690CEFF-AE08-4881-AF52-70C097EB2871.dita Tue Jul 20 12:00:49 2010 +0100 +++ b/Symbian3/PDK/Source/GUID-6690CEFF-AE08-4881-AF52-70C097EB2871.dita Fri Aug 13 16:47:46 2010 +0100 @@ -1,39 +1,39 @@ - - - - - -Unavailable -items -

Situations often occur where a certain function cannot be used. In these -cases, the corresponding items in the Options menu must either be hidden, -or there must be an error message given when the user tries to access a function -that cannot be accomplished. The Symbian user interface does -not use dimming of menu items.

-

This is a trade-off issue: removing unnecessary options makes the Options -menus shorter, but at the same time it changes the menu from situation to -situation, preventing users from learning the function locations. It may even -cause frustration if the users expect some function to be found in the menu, -but it is sometimes not there.

- + + + + + +Unavailable +items +

Situations often occur where a certain function cannot be used. In these +cases, the corresponding items in the Options menu must either be hidden, +or there must be an error message given when the user tries to access a function +that cannot be accomplished. The Symbian user interface does +not use dimming of menu items.

+

This is a trade-off issue: removing unnecessary options makes the Options +menus shorter, but at the same time it changes the menu from situation to +situation, preventing users from learning the function locations. It may even +cause frustration if the users expect some function to be found in the menu, +but it is sometimes not there.

+
    +
  • In case the user has no reason to search for a certain function in +the given situation, it should be hidden. As an extreme example, the Delete +option is not needed when there are no items to be deleted.

  • +
  • If the user searches for a function, even though it cannot be used +in the current situation, it is often better to display the option and give +an appropriate message if the user tries to access that function.

      +
    • An example of this is Digital Rights Management (DRM) protected files: +for example, sending commands shall be visible in the user interface although +sending such a file would not be allowed. Appropriate DRM-specific notifications +are displayed if the user attempts to select one of the options that the user +is not allowed to perform on DRM-protected media objects. This is to facilitate +end-user's learning of the DRM concept.

    • +

  • +
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