Bug 63115

Your first point is valid.  This seems to be a problem only since adding 
synchronous messages. 
 
I'm not sure why you would want to extend the vertical line lenght unless the 
messages were lower down on the lines so it makes sence that they can only 
be extended by dragging the messages downwards. 
 
Thanks 
Jonathan Riddell 
 

It becomes a problem when a message arrow will span more than
the default/current vertical line length. I will give a small example. 
I have two objects TEST and GAME. Then I place a message arrow
(named start) between
the two objects: 
TEST--start-->GAME
Then the execution is directed to the "start" method of
the GAME obejct. Then the start method calls several other
objects such that 
TEST--start-->GAME
                --------->object1
                <---------
                --------->object2
                <--------- 
                --------->object3
                <---------
   <------------                  
This means 
that the message arrow "start" between TEST and GAME will span
more than the default vertical line. Then it would be nice just
to resize the "start" message downwards, further down than
the default length.
   
I have to place another message arrow just to extend the 
vertical line.
Then I can resize the "start" message such that is spans over
all the message calls made from within the "start" message. Finally
I delete the noname message, and the operation is completed. 

Thomas Olsen 

Thanks for the clarification, I think I understand now. 
 
The current CVS includes synchronous and asynchronous messages 
 
http://uml.sourceforge.net/developers/umbrello-synchronous-messages.png 
 
which are resizeable vertically and should solve that problem of yours. 
 
(Note to self, need to fix those arrow ends.) 

Sorry that I have not been precise enough. I already use the CVS version (from
20/8) and the message arrows in the above example are synchronous message arrows.

If I click on the synchronous message (the whole graphic object) then the
vertical lines can be extended. If I click at the bottom arrow which return the
thread of execution (the bottom of the synchronous message graphic object) then
the synchronous message can be resized vertically as you say, but only until the
end of the verical line. When the line stops it is not possible in my version
to resize any further and that is the problem in the above example.

I hope this makes it more clear what I mean. 

Ah I see, the vertical lines don't grow when changing the size of the 
synchronous messages.  Funny you'd think I'd have noticed that.  Thanks for 
your patience. 
 
/me adds to my TODO list. 
 
Jonathan 

can now create sequence diagram messages when the object widget is 
selected.