> -----Original Message----- > On Jul 13, 2004, at 2:49 PM, Jonathan Karlen wrote: > > > I need to build a world map in .NET. The onClick event of an > > ImageButton object supplies the X and the Y. The image map I was given > > to work on is all in polygrams so just knowing the X and the Y doesn't > > do necessarily accomplish anything unless X and Y match a point exactly > > on the polygram. Databasing each pixel on the map and its > > corresponding > > country isn't exactly a streamlined process. It does, but you need to extrapolate a bit - from a polygon you can run a test to see in which the pixel falls - .net has some geometric functions for tracking a line in 2D space, so this is doable, though I've never had need.