[ms4w-users] Problem with layer ordering

[Bart van den Eijnden (OSGIS)]

You are asking this to the wrong list. MS4W is about the installer 
environment only.

Try the mapserver-users list.

http://mapserver.gis.umn.edu/community/mailinglists/mapserver-users/

Best regards,
Bart

Russell H. DeGrove schreef:
> I am trying to change the order layers are rendered in.  I'm using 
> SWIG for C#. 
>  
> Code is as follows
>  
> // "mObj" is a mapObject.
> // "list" is a list of "Layer" objects which aren't layerObjs 
> but which do reference layerObj names
> // "list" is in the order I want, and when this code is reached I've 
> verified that every Layer in "list" has a corresponding layerObj in mObj
>  
>         intarray arr = new intarray( list.Count );
>         int arrIndex = 0;
>         bool hasDiff = false;
>
>         foreach ( Layer reqLay in list )
>         {
>             // find the layer object by the request layer's ID
>             layerObj lObj = mObj.getLayerByName( reqLay.ID );
>             if ( lObj == null )
>             {
>                 throw new ApplicationException( "SetLayerOrdering must 
> not be called until new layers are merged into the map state." );
>             }
>  
>             // is layer order different from the original order
>             if ( arrIndex != lObj.index )
>             {
>                 hasDiff = true;
>             }
>  
>             // add the index to the intarray
>             arr.setitem( arrIndex++, lObj.index );
>         }
>  
>         // set drawing order if any differences are found
>         if ( hasDiff )
>         {
>             mObj.setLayersDrawingOrder( arr.cast() );
>         }
>  
> I can step through the code and see that  mObj.setLayersDrawingOrder 
> gets called when there are changes but the subsequent map rendering 
> does not reflect the change in ordering.  Can anyone suggest what I 
> might be doing wrong?
> ------------------------------------------------------------------------
>
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>   


-- 
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl