bontepaarden at gmail.com
Sat Jan 25 14:50:10 PST 2014
Thanks to Tamas Szekeres we are now using his binaries from
http://www.gisinternals.com/sdk/ with MapWinGIS, our mapping ActiveX.
This has drastically simplified our build process and we are very grateful
for Tamas' help.
We're now struggling with some minor issues regarding our 'old' C++ code
and the new binaries for GDAL, GEOS, Proj4, etc.
Several of them I managed to solve, but I'm struggling with this one.
We have code to read a prj file and get the Proj4 string:
void ProjectionTools::GetProj4FromPRJFile(char * prjfileName, char **
FILE * pFile;
pFile = fopen (prjfileName,"r");
if (pFile == NULL)
// Doesn't exist
pFile = NULL;
OGRSpatialReference* oSRS = new OGRSpatialReference();
char **papszPrj = CSLLoad(prjfileName);
if (papszPrj == NULL)
OGRErr eErr = oSRS->importFromESRI(papszPrj);
if (eErr != OGRERR_NONE)
OGRErr eErr = oSRS->importFromProj4(*papszPrj);
CSLDestroy( papszPrj );
char * pszProj4 = NULL;
eErr = oSRS->exportToProj4( &pszProj4 );
delete oSRS; <-- going wrong now
*prj4 = new char[_tcslen(pszProj4)+1];
This code was working for years, but now it crashes on delete oSRS;.
I've been searching for examples of how to use exportToProj4() in C++ but
can only find Python examples.
And I'm not a C++ developer, just a C# developer :)
How should I now free oSRS?
Thanks for any advice.
*Paul Meems *
Release manager, configuration manager
and forum moderator of MapWindow GIS.
Owner of MapWindow.nl - Support for
Dutch speaking users.
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