[GRASS-dev] Tk implemantation of a query function

Moritz Lennert mlennert at club.worldonline.be
Mon Oct 23 12:36:14 EDT 2006

On Mon, October 23, 2006 17:27, Thierry Gonon wrote:
> Hi everybody,
> I'm a beginner in programmation and my goal (as wanted by my boss) is to
> add a function to make the building of a query easier and more friendly
> that it is actually (so that people who don't know SQL syntax can build
> queries !!).
> I've made a first script in bash, that works quite well (for postgres, but
> I'm planning to extend it to other databases used by GRASS). And now,
> Im'trying to make it more friendly, thru Tk. My problem is the following
> error :
> Error in startup script: can't read "GRASS_WISH": no such variable
>     while executing
> "exec $GRASS_WISH "$0" "$@""
> If I only write "exec $GRASS_WISH" in this line, the error is that it
> opens a new window and freeze everything...
> I think my problems are very small... But can someone helps me ??
> I join my code to help !

I think your second line should end with a backslash:

#Version 0.5 (15 octobre 2006)\
exec $GRASS_WISH "$0" "$@"

The backslash makes sure the line with 'exec' is only visible to the
shell, but not to tcltk (for which it is the continuation of the commented
line 2).


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