MapForums

Hi everyone:
I want the postal code of a region on which the user clicks to be returned. So I use the 'OnBeforeClickControl1()' event handler and what I do is the following:

void CMapPointTest1View::OnBeforeClickControl1(long Button, long Shift, long X, long Y, BOOL FAR* Cancel)
{

m_location=m_map.XYToLocation(X,Y);
m_location.GoTo();
m_location.Select();
CStreetAddress sa = m_location.GetStreetAddress();
CString postalcode=sa.GetPostalCode();
}
m_location is a CLocation object, m_map is a CMap1 object.
But the CString 'postalcode' is empty! WHY ???

Hi geouser,

When you click somewhere in your region, you have to check if it is a GOOD ADDRESS. If not, you have to look for the NEAREST one. Thus, you can get the street, the postal code, and so on.

Look in this forum for the REVERSE GEOCODING discussion.
I remember, I've seen here a good article about getting nearest address.

Hope this will help

Ciao

__________________
Mohamed
www.AtlasCouscous.com

I think a spiral approach was used in finding the nearest good location.

exactly! From what I know so far it should be a loop searching for good results. And it seems to work. But even the good locations do not return a postal code from the CFindResults object. Anyway: Good location or not, it should be possible to have the postal code or - better - the FIPS code for any spot in the US. If you click somewhere in the desert of Nevada with no popular place around, there must be a FIPS code for that region.....
geouser

FIPS ?

First Intersection Partly Somewhere?

Hi: Federal Information Processing Standard (FIPS) codes for counties used by the U. S. Census Bureau, see http://www.census.gov/geo/www/fips/f...a/national.txt
every county has one. IM searching for the possibility to have the county returned after the user clicks on the map.
geouser

Thanks. Good information.