gs error

Gunilla Arendt <>
Thu Apr 6 14:33:31 CEST 2006


Hi,

Yes, it is a message from the GS application itself. GS is logically
divided into a frontend and a backend, the frontend handling
communication with the user and the backend communication with Tcl/Tk.
With the backend gone, calls to for example gs:read/2 will return a
value (an error tuple) but all windows are gone and no new windows can
be created. Call gs:start/0 to start a new backend.

The problem seems to be that a 'configure' event should be created for
a window, but there for some reason is no configure option stored in
the database for that window object. I'm not sure why this happens,
if I can find the time I will take a closer look at the code later.
If you have some more specific information about when the problem
occurs, or if you are able to reproduce it, please let me know.

Regards, Gunilla


 wrote:
> Hello sir ,
> 
>  
> 
>             I've developed a mini project using erlang . This project 
> makes use of many graphical windows which have been developed using the 
> graphical server ' gs ' .
> 
> At some instances when I'm moving the windows ( resizing or changing the 
> position ) , all the windows are simply vanishing . 
> 
> At this point  I'm getting the following error :
> 
>  
> 
>             
> 
> gs error:
> 
> =ERROR REPORT==== 6-Apr-2006::09:37:10 ===
> 
> Error in process <0.35.0> on node '' <mailto:''> 
> with exit value: 
> {{badmatch,[]},[{gstk_db,opt,3},{gstk_window,event,5},{gstk,doit,2},{gstk,loop,1}]}
> 
>  
> 
> user backend died reason 
> {{badmatch,[]},[{gstk_db,opt,3},{gstk_window,event,5},{gstk,doit,2},{gstk,loop,1}]}
> 
>  
> 
>  
> 
>            It would be highly appreciative if you could suggest what 
> could be the cause for this error .
> 
> Here I would like to mention that    I've handled the configuration( 
> resizing or changing the position ) of the windows using { gs,W, 
> configure,_,_ }  . 
> 
>           Is this an error from the graphical server ( gs ) itself ?
> 
>            What does 'user backend died reason' mean ?  
> 
>  
> 
>  
> 
>  
> 
> Thanks & Regards ,
> 
> Vikash
> 
> 
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