[messages] [Technical Support & Bugs] map fails to drag--drag stack sometimes only moves top

scs sstrait1 at san.rr.com
Tue Oct 5 23:57:02 MST 2010

I can't drag the map around any more. Help with my terminology or with
ways to get help would even be useful.  Also, trying to move stacks of
sometimes moves only the top one.

I hadn't run Vassal in a week or two
prior to the problem appearing. During that time I recieved various
updates, (not Vassal, but maybe Java) and tried editing a build file for
a Stalingrad variant--not the Stalingrad build file.
The Stalingrad module and the VASSAL Vengine.jar
still match my backups in date, size, and md5 checksum. It's possible
I've corrupted something more obscure, I guess.

I dont't know if the problem is the module, VASSAL, Java, the OS
(Ubuntu Linux), my roller-mouse, or what. I'm mostly a command-line
user and programmer, so lessons in GUI-oriented terminology may be

Because the problem was not provoked by running anything new from
I'm not urging anyone to go very far trying to duplicate it.  I am very
interested, however, in any reports or fixes from people who have seen
same thing or something they suspect is related.

====Details of the problem==============

If I try to drag the map to show a different part of it, a black
rectangular outline is displayed, with one
corner where I originally clicked and the opposite corner at the current
location. If I release the mouse button the rectangle is gone and the
map is
exactly as it was when I started trying to drag. I don't know if some
while the rectangle is showing will do something dramatic and useless to
e.g. zoom, turn it solid black, etc.

A specific sequence:

1. Start Vassal
2. double-click on the Stalingrad module
3. start a game off-line
4. open as the Russian player
5. click on R41 (Minor city of Gorki)
6. drag mouse toward top left or other directions--no effect except
   display of rectangle
7. drag Russian armored stack toward Gorki.
8. expand stack
9. unexpand stack
10. try to drag it further--only the top unit drags.

I can drag the maps around successfully in Google Maps, Yahoo Maps, and
OpenStreetMap.org, all using Firefox. I could test dragging on a Java
application if someone suggests one.

Model--a generic "white-box" machine from a local store.
Operating System: Ubuntu 10.04.1 LTS (Lucid)
CPU: Intel E3200
Memory: 1 gigabyte
video card: ?
Vassal version: 3.1.14
java version: "1.6.0_18"
Vassal module: Stalingrad 1.11
Mouse: Contour RollerMouse

OpenJDK Runtime Environment (IcedTea6 1.8.1) (6b18-1.8.1-0ubuntu1)
OpenJDK Client VM (build 16.0-b13, mixed mode, sharing)

My whole Vassal error log:

06 Oct 2010 05:50:52.692 0 -- Starting
06 Oct 2010 05:50:52.693 0 -- OS Linux
06 Oct 2010 05:50:52.693 0 -- Java version 1.6.0_18
06 Oct 2010 05:50:52.693 0 -- VASSAL version 3.1.14
06 Oct 2010 05:50:52.810 0 -- Manager
06 Oct 2010 05:50:58.022 0 -- Loading module file
06 Oct 2010 05:50:58.023 0 -- Loading module Stalingrad
06 Oct 2010 05:50:58.025 0 /usr/lib/jvm/java-6-openjdk/jre/bin/java
-Xms256M -Xmx512M -DVASSAL.id=1 -Duser.home=/home/scs -cp
lib/Vengine.jar VASSAL.launch.Player
06 Oct 2010 05:50:59.582 1 -- Stalingrad version 1.11
06 Oct 2010 05:50:59.582 1 

06 Oct 2010 05:54:23.004 1 -- Exiting
06 Oct 2010 05:54:27.979 0 -- Exiting

Thanks very much.

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