Форум программистов [Powered by Invision Power Board]

Код



#ifdef AHM_EXPORTS
#define AHM_API extern "C" __declspec(dllexport)
#else
#define AHM_API extern "C" __declspec(dllimport)
#endif

namespace ahm {

...
    class Unit {
    public:
        ...
    };


    /**
     * The class HardwareModel gives access 
     * to the functionality of the abstract hardware model.
     * It mainly gives access to hardware units.
     *
     */    

    class HardwareModel {
    public:
        typedef enum eClassInfo { VERSION=2 } EClassInfo;
        /**
         *  Request access to a hardware unit.
         *  @param hardware unit locater (for example entry in hardware unit config DB)
         *  @return Unit object or 0 (if not available)
         */
     
        virtual ahm::Unit * getUnit(iop::string locatehw)=0;
        
        /**
         * dispose allocated resources for this hardware model
         * ATTENTION: Use this to free resources, when no longer needed.
         *            After dispose calls to the HardwareModel object may cause crashes.
         */
        virtual void dispose()=0;
        
        /**
        * Retrieve version string of hardware model 
        */        
        virtual iop::string version() = 0;
        
        /*** VERSION 2 ... */

        /** set file name of ahmconfig.xml */
        virtual void setConfigFileName(iop::string szfnConfig) = 0;
        /** set file name of ahmconfig.xml */
        virtual iop::string configFileName() = 0;
    };

....

}; // namespace ahm


/**
 * Published DLL entry point
 * Call this to get the singleton hardware model
 *
 */
AHM_API ahm::HardwareModel *  theHardwareModel();

Код



ahm::Unit* pRoot;
    HMODULE hLib;

    hLib = LoadLibrary("ahmcore.dll");
    if (hLib) {
        ahm::HardwareModel* (*hmf)(void);
        ahm::HardwareModel* hm;
        (FARPROC &) hmf = GetProcAddress(hLib, "theHardwareModel");
        if (hmf == NULL) return 0;
        hm = (*hmf)();
        if (hm == NULL) return 0;
        pRoot = hm->getUnit("DEMO-DMI6000B");
        if (pRoot != NULL) {
           
        }
    }