[OpenLayers-Users] Getting paramaters from events

[Aaron Racicot]

The callback gets called in the context of the object (i.e. Marker in your
case) and therefore you have access to the Marker data members as part of
the callback via this.  Marker does not have an x or y member, but it does
have a lonlat that you can access.

 

            this.lonlat.lon and this.lonlat.lat (or just lonlat.lon for that
matter)

 

If you want the click xy then you can access evt.xy.x and evt.xy.y

 

Hope that helps.

 

A

 

+----------------------------------------+
 Aaron Racicot - GIS Programmer  
 360.221.2441 - aaronr at ecotrust.org         
+----------------------------------------+
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+----------------------------------------+ 

-----Original Message-----
From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] On
Behalf Of Keith
Sent: Tuesday, March 06, 2007 9:29 AM
To: users at openlayers.org
Subject: [OpenLayers-Users] Getting paramaters from events

 

I'm having trouble passing parameters through an event call.  

 

According to the browse repository:  you should be able to retrieve previous
parameters from the callback function ( in this case "this.x/y"  ).

 

I haven't had any luck with this so far though (this.x/y are "undefined").
Can anybody provide me with the appropriate way of retrieving parameters (as
passing them isn't an option).

 

I've included the "dumbed-down" debug code below.

 

 

<!---------------------------------------------------------------------->

            

function addMarker(x,y,layer) {

                                                

            marker = new OpenLayers.Marker(

                        new OpenLayers.LonLat(x,y),

                        new
OpenLayers.Icon("/kamap/mapserver/images/AQUA.png",new
OpenLayers.Size(20,34))

            );

                                    

            layer.addMarker(marker);

            marker.events.register("mousedown", marker, mousedown);

}

                        

<!----------------------------------------------------------------------->

 

function mousedown(evt) {

 


                document.write("DEBUG LINE : " + this.x);

                document.write("____DEBUG LINE : " + this.y);

                                    

}

<!---------------------------------------------------------------------->

 

 

 

Thanks,

 

Keith Weber
Tech Support
Archetype, Inc.
205.443.6560 office
334.669.2522 mobile
kweber at archetypecorp.com

 

 


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