Version: 1.1.1 (using KDE KDE 3.1.1) Installed from: SuSE RPMs Compiler: gcc version 3.3 20030226 (prerelease)(SuSE Linux) OS: Linux It seems that umbrello forbids the creation of more than one objects of the same class in a collaboration or sequence diagram. Say, if you created a1: A and want to create a2: A umbrello comes up with a message that class name A is already in use.As far as I know it is perfectly ok to have two objects of the same class in one collaboration/sequence diagram. If I just haven't found the right way to achieve what I wanted, may be the UI needs some improvement.
The answer is that you drag in classes from the left hand tree view. For the user interface issue I'm not sure what the best way to handle this is. Probably replace the dialogue box for adding a new class to the diagram with one that has a combo box which lets you choose an already existing class if you wish. It should also have a text field to set the instance name. Thanks for pointing out the issue.
this would really mean major changes at the moment, so after KDE 3.2 is released
It works for me: - Create new_class in list view - Drag new_class to the diagram area - Give the object a name using the popup menu (right mouse button) - Again drag new_class from list view to diagram area - Give this object a name as above