Method 1
Create two fields, 'origForm' and 'formCheck'. 'origForm' is computed when composed with the formula: Form. The 'formCheck' field is a hidden editable field with a translation formula of:
@If(@IsNewDoc=0 & origForm <> Form; @Prompt([OK]; ""; "You cannot use the view menu to compose new documents. Use the Compose menu or buttons. You will not be permitted to save this document"); "");
Method 2
1. Take all the forms out of the Compose menu. This will remove them from the View menu.
2. Add buttons for Compose. You can set up a Menu form or document with buttons on it, from which all Compose and View statements are executed. You can put this menu in a separate database or if you put in in the same database, create one instance, and then hide the form from the Compose menu.