[gdal-dev] Reading VMAP Files.

[Chris Howell]

Hi All,

A few vital stats before getting to the problem.

OS: Windows Vista
GDAL Version: GDAL 1.5.0

The problem I am currently encountering is this. I have a VMAP 
datasource, and when I try to open it via FWTools and the following 
command.

ogrinfo -ro gltp:/vrf/C:/Path_To_dataource. OGR opens fine the 
datasource as expected an reports layers / families in the file WHICH is 
Great.

The problem is. In our application when I attempt to open the VMAP file 
in code, via the following.

OGRDataSource* pOGRDataSource = 
OGRSFDriverRegistrar::Open(strDataSourceName.c_str());

Where strDataSourceName = gltp:/vrf/C:/Path_To_dataource

The pointer to the data source is ALWAYS null! I've checked and 
rechecked that the paths' are the same.

What I want to do is. Open the datasource in code, take the pointer to 
the data source, get all of the layers that are presented via ogrinfo. 
and give them back to the user as to which layer to open in the VMAP 
datasource.

Any light someone could shed no this would be greatly appreciated.

Cheers
Chris Howell
Software Engineer
the PYXIS innovation -/Common Ground for Digital Earth
/Kingston, Ontario
w: www.pyxisinnovation.com
p:613-389-6619
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