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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am new to the list and welcome any advice in this area.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I want to develop a mapping interface that can plot my own location plus the location of others (where the location of others is transmitted directly between one another, not via a central server).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>To do this I searched around and came across TangoGPS, I changed the interface a bit and added the new functionality I required (by adapting the “Friends” functionality, cutting out the Curl code and replacing it with some socket code). After doing this, I came across an email thread that lead me to find out about the problems that lead to the creation of FoxtrotGPS.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I was looking around because I have hit a stumbling block. Whenever I update the location of a different person it redraws the chosen icon in a new location, but doesn’t remove the existing icon from the previous location. The icons representing the previous locations aren’t removed unless the map is physically dragged using a left mouse click. I need the new location of a person to be updated and the previous location to be removed immediately as soon as new coordinates are received via the respective socket. Using my limited understanding of GTK+ I have not been able to achieve this after trying for quite some time.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So this has lead me to look around, and at the same time I have come across osm-gps-map too, which looks potentially very useful for what I want to do. I dl’d the source, compiled and ran the example... I then tried integrating some of the osm-gps-map functionality into my own application, but ran into problems during compilation. I have however seen some other emails suggesting FoxtrotGPS may already have integrated with osm-gps-map in some way, is that correct? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>...So before continuing it seemed like a good time to take stock. For what I want to achieve, I’m trying to determine whether I am best:<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>1) Sticking with what I have and trying to solve the icon redrawing problem.<o:p></o:p></p><p class=MsoNormal>2) Trying to invest some more time into integrating osm-gps-map into what I have.<o:p></o:p></p><p class=MsoNormal>3) Throwing out my interface changes and migrating to FoxtrotGPS (in which case I’d need to learn about how to work with the XML UI).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’d be really grateful if any of you guys could give me your opinion on any of this.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Ben<o:p></o:p></p></div></body></html>