portdriver.h

读dspf2812的内部程序

//--------------------------------------------------------------------------------
#ifndef _PORTDRIVER_H
#define _PORTDRIVER_H
//---------------------------------------------------------------------------------
class PortDriver{
    HINSTANCE PortLib;
public:
    bool LibraryOk;
    PortDriver();
    int (_stdcall *InportBYTE)(int);
    int (_stdcall *OutportBYTE)(int,int);
    int (_stdcall  *InportWORD)(int );
    int (_stdcall  *OutportWORD)(int ,int );
    long (_stdcall  *InportDWORD)(int );
    long (_stdcall  *OutportDWORD)(int ,long );
    ~PortDriver();
    };
//---------------------------------------------------------------------------------
PortDriver::PortDriver()
{
    LibraryOk=true;
    PortLib=LoadLibrary("PortArt.dll");
    if(!PortLib)LibraryOk=false;
    if(PortLib){
	InportBYTE=(int (_stdcall *)(int))
            GetProcAddress(PortLib,"InportBYTE");
        if(!InportBYTE)LibraryOk=false;
        OutportBYTE=(int (_stdcall *)(int,int))
            GetProcAddress(PortLib,"OutportBYTE");
        if(!OutportBYTE)LibraryOk=false;
        InportWORD=(int (_stdcall *)(int))
            GetProcAddress(PortLib,"InportWORD");
        if(!InportWORD)LibraryOk=false;
        OutportWORD=(int (_stdcall *)(int,int))
            GetProcAddress(PortLib,"OutportWORD");
        if(!OutportWORD)LibraryOk=false;
        InportDWORD=(long (_stdcall *)(int))
            GetProcAddress(PortLib,"InportDWORD");
        if(!InportDWORD)LibraryOk=false;
        OutportDWORD=(long (_stdcall *)(int,long))
            GetProcAddress(PortLib,"OutportDWORD");
        if(!OutportDWORD)LibraryOk=false;
        }
    if(!LibraryOk){
          ShowMessage("Dyminate-Link-Library :PortArt.Dll Load Failure!");
          }
    }
//---------------------------------------------------------------------------------
PortDriver::~PortDriver()
{
    if(LibraryOk)FreeLibrary(PortLib);
    }
//---------------------------------------------------------------------------------
#endif
//---------------------------------------------------------------------------------