HDF4 -- Questions About the Software

PLATFORM SPECIFIC

• Windows: Using MFC, getting unresolved external symbol errors for __argv, __argc, __mbctype
• Windows: Instructions for building with VS .NET (with and without MFC)

I am trying to use the MFC library. In the project c/c++ code generation type, I have changed the runtime library to Multithreaded DLL.

When I then compile the program it links with the multi threaded libraries but I get the following errrors:

nafxcw.lib(appcore.obj) : error LNK2001: unresolved external symbol ___argv
nafxcw.lib(appcore.obj) : error LNK2001: unresolved external symbol ___argc
nafxcw.lib(filelist.obj) : error LNK2001: unresolved external symbol __mbctype

The solution: When you use the multithreaded dll's in visual c++.NET, you need to specify that you are using MFC in a shared dll. This is specified in the project settings.

A user provided the following instructions for building with VS .NET (thank you!): A Console Application (at the prompt)

Go to Tools - Options and select Project
    Go to C/C++ directories and select Show directories for
        - include : there they need to add the /include
    In the same drop down box they select Show directories for
        -lib: there they need to add the /lib
After that they need to go to Project - Properties
    First change the configuration from "Debug" to "Release" using the 
"Configuration Manager"
    Then select: "Linker - Inputs". At the line "Additional 
dependencies" they  need to click and add the following lines:
        /hd415.lib
        /hm415.lib   
        ws2_32.lib
That is all for the single threaded libs. If they want to use the lib, 
they should include at the top of the source file
#include "mfhdf".lib" and never "hdf.lib"

Go to Tools - Options and select Project
    Go to C/C++ directories and select Show directories for
        - include : there they need to add the /include
    In the same drop down box they select Show directories for
        -lib: there they need to add the /lib
After that they need to go to Project - Properties
    There first go the Project - General and change "Use of MFC" to "Use 
MFC in a shared DLL"
    Change the configuration from "Debug" to "Release"  using the 
Configuration Manager
    Then go to C/C++ - Code generaton and change "Runtime library" to 
"Multithreaded DLL" (is by default Multithreaded)
    Then go to Linker inputs and at the line "Additional dependencies" 
they  need to click and add the following lines:
        /hd415m.lib
        /hm415m.lib   
        ws2_32.lib
   Furthermore, the dll files should be copied to c:\windows\system
   Then just include the header-file in the source file and everything 
should work.