gendriver.h

GenDriver即簡單的資料流驅動程式

// Declare the external entry points here. Use declspec so we don't 
// need a .def file. Bracketed with extern C to avoid mangling in C++.
//
#ifdef __cplusplus
extern "C" {
#endif //__cplusplus
__declspec(dllexport) DWORD GEN_Init (DWORD dwContext);
__declspec(dllexport) BOOL  GEN_Deinit (DWORD dwContext);
__declspec(dllexport) DWORD GEN_Open (DWORD dwContext, DWORD dwAccess, 
                                      DWORD dwShare);
__declspec(dllexport) BOOL  GEN_Close (DWORD dwOpen);
__declspec(dllexport) DWORD GEN_Read (DWORD dwOpen, LPVOID pBuffer, 
                                      DWORD dwCount);
__declspec(dllexport) DWORD GEN_Write (DWORD dwOpen, LPVOID pBuffer, 
                                       DWORD dwCount);
__declspec(dllexport) DWORD GEN_Seek (DWORD dwOpen, long lDelta, 
                                      WORD wType);
__declspec(dllexport) DWORD GEN_IOControl (DWORD dwOpen, DWORD dwCode, 
                                           PBYTE pIn, DWORD dwIn,
                                           PBYTE pOut, DWORD dwOut, 
                                           DWORD *pdwBytesWritten);
__declspec(dllexport) void GEN_PowerDown (DWORD dwContext);
__declspec(dllexport) void GEN_PowerUp (DWORD dwContext);
#ifdef __cplusplus
} // extern "C"
#endif //__cplusplus

// Suppress warnings by declaring the undeclared.
#ifndef GetCurrentPermissions
DWORD GetCurrentPermissions(void);
DWORD SetProcPermissions (DWORD);
DWORD GetCallerProcess(void);
PVOID MapPtrToProcess (PVOID, DWORD);
#endif //GetCurrentPermissions

DWORD GetConfigData (DWORD);
//
// Driver instance structure  
//
typedef struct {
    DWORD dwSize;
    INT nNumOpens;
} DRVCONTEXT, *PDRVCONTEXT;