03-10-2009 12:30 PM
03-15-2009 06:14 PM
You should be able to send an existing message to your application using an ApplicationMenuItem and ApplicationMenuItemRepository.
Basically, you place your own context menu item in the Message application. When the user click the MENU key, he sees your menu item, "Translate SMS" (or whatever). When the user selects your menu item, your implementation of ApplicationMenuItem is called, passing your application an Object called "context". You would then cast this object to the "Message" type and extract the text from the message for translation.
See the API docs for Message, ApplicationMenuItem, ApplicationMenuItemRepository.