Tag Archives: dll library

Building the Audio Library

  • Making sure that the release version of the code runs as well – it does. And a massive 19kb of executable. Of course, it’s not statically linked… That makes it 6,234kb
    • C/C++
      • General
        • Additional Include Directories: $(DXSDK_DIR)\Include
      • Language
        • Treat WChar_t as Built in Type: Yes (/Zc:wchar_t)
    • Linker
      • General
        • Additional Library Directories: C:\Program Files %28×86%29\Microsoft DirectX SDK %28June 2010%29\Lib\x86
      • Input
        • Additional Dependencies:
          • winmm.lib
          • dxerr.lib
          • X3DAudio.lib (only needed for DLL compilation)
  • Making library
    • Following directions here: http://msdn.microsoft.com/en-us/library/vstudio/ms235627.aspx
    • For a DLL library, you *must* select the when creating your console application’s (that is actually not a console application, but never mind that…) “export variables” checkbox option. Still figuring out how to use this.
    • For my first attempt in accessing the DLL, I’ve created the following method (The #defines are generated, I’ve included them for all to marvel at):
        #define DXAUDIOINTERFACEDLL_API __declspec(dllexport)
        #define DXAUDIOINTERFACEDLL_API __declspec(dllimport)
        DXAUDIOINTERFACEDLL_API BasicAudio* getBasicAudio(void);
      • I think this produces an exported method that returns a pointer to the BasicAudio class. Not sure though. It may, though now I’m getting the following link errors:
        • 1>DynamicLibConsoleTest.obj : error LNK2019: unresolved external symbol “public: void __thiscall BasicAudio::destroy(void)” (?destroy@BasicAudio@@QAEXXZ) referenced in function _wmain
        • etc…
        • 1>C:\Phil\MSVC Dev\MultichannelOr3dAudio\DxAudioInterfaceLibrary\Debug\DynamicLibConsoleTest.exe : fatal error LNK1120: 6 unresolved externals
      • Which means the public inner methods are not available. Maybe the answer is to make a wrapper class for all the methods? Ugly, but something to try..
      • Building wrapper class DXAUDIOINTERFACEDLL_API CDxAudioInterfaceDLL
      • Done. Compiles and links now, but doesn’t run. Ah. I was declaring a local pointer to the internal BasicAudio class. Not pretty, but it does seem to work…
  • Testing against Static console app – check
  • Testing against Dynamic console app – check
  • Switching to Release build
  • Testing against Static console app – check
  • Testing against Dynamic console app – check
  • Checked everything into Subversion. Calling it a day.