[Shapelib] Including shapelib.dll in Visual C++ 2008 Express project

Sanak geosanak at gmail.com
Sun Jun 21 07:42:43 EST 2009

Hi Raphael,

It seems that the original Visual C++ shapelib project preprocessor
definitions are invalid. (generated shapelib.lib and shapelib.dll symbols
are incompatible)

Please try as follows,
1. modify shapelib project C/C++ preprocessor definition from VC property
2. modify each source files(dbfopen.c/shpopen.c/shptree.c) C/C++
preprocessor definition from VC property page
3. rebuild shapelib project.
4. import generated shapelib.lib to your project and build.



2009/6/21 raphael_mws <r.speck at minewolf.com>

> Hi folks,
> I am having a real hard time including the shapelib.dll in my VC++ 2008
> project. I did the following:
> - recompile the Visual C++ shapelib project from
> http://dl.maptools.org/dl/shapelib/contrib/DotNetArchive.zip. This worked
> fine, and I got the output dll and lib files.
> - include the shapefil.h in my .cpp file successfully
> - tried various possibilities to get the shapelib.dll in the correct PATH.
> Actually, it should be found by the compiler, I even tried putting it into
> C:\WINDOWS\system32 to make sure that's not the problem.
> - experimented with various combinations of __declspec( dllimport ) to
> import the functions from the dll
> When I try to compile, I always get the following error:
> "error LNK2019: Verweis auf nicht aufgelöstes externes Symbol "_SHPOpen" in
> Funktion "_wmain"."
> (in English: unreferenced extern symbol "... )
> Can anybody please give me a hint what I might be doing wrong? Or, even
> better, send me a sample VC project using shapelib.dll?
> Thanks and kind regards,
> Raphael
> --
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> Sent from the ShapeLib mailing list archive at Nabble.com.
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