如何調試「語法錯誤：_stdcall」？

Question

我想利用這個代碼來定義與讀卡器進行通信所需的API。以下是頭文件（完整）。 [AtUsbHid.h]

它拋出幾個錯誤，但我想如果語法問題就解決了，其餘的將水到渠成。

我確信__export用__declspec取代，因爲這原本是用VC++編譯6，和我使用VS2005，有可能是我丟失的東西。

錯誤C2059：語法錯誤： '__stdcall'

#ifndef _ATUSBHID_H_ 
#define _ATUSBHID_H_ 

// Error codes. 
#define ERROR_USB_DEVICE_NOT_FOUND   0xE0000001 
#define ERROR_USB_DEVICE_NO_CAPABILITIES 0xE0000002 

// name of the DLL to be loaded 
#define AT_USB_HID_DLL "AtUsbHid" 

// Implement the DLL export/import mechanism and allow a C-written program 
// to use our DLL. 
#ifdef ATUSBHID_EXPORTS 
#define ATUSBHID_API extern "C" __declspec(dllexport) 
#else 
#define ATUSBHID_API extern "C" __declspec(dllimport) 
#endif 


// This macro function calls the C runtime's _beginthreadex function. 
// The C runtime library doesn't want to have any reliance on Windows' data 
// types such as HANDLE. This means that a Windows programmer needs to cast 
// values when using _beginthreadex. Since this is terribly inconvenient, 
// this macro has been created to perform the casting. 
typedef unsigned(__stdcall *PTHREAD_START)(void *); 

#define chBEGINTHREADEX(psa, cbStack, pfnStartAddr, \ 
    pvParam, fdwCreate, pdwThreadId)     \ 
     ((HANDLE)_beginthreadex(      \ 
     (void *)  (psa),      \ 
     (unsigned)  (cbStack),     \ 
     (PTHREAD_START) (pfnStartAddr),   \ 
     (void *)  (pvParam),     \ 
     (unsigned)  (fdwCreate),    \ 
(unsigned *)(pdwThreadId))) 

// Allow applications not built with Microsoft Visual C++ to link with our DLL. 
#define STDCALL __stdcall 

// These macros make calling our DLL functions through pointers easier. 
#define DECLARE_FUNCTION_POINTER(FUNC) PF_##FUNC lp##FUNC=NULL; 
#define LOAD_FUNCTION_POINTER(DLL,FUNC) lp##FUNC = (PF_##FUNC)GetProcAddress(DLL, #FUNC); 
#define ADDR_CHECK(FUNC) if (lp##FUNC == NULL) {fprintf(stderr,"%s\n", "Error: Cannot get address of function."); return FALSE;} 
#define DYNCALL(FUNC) lp##FUNC 


/////////////////////////////////////////////////////////////////////////////// 
typedef BOOLEAN (STDCALL *PF_findHidDevice)(const UINT VendorID, const UINT ProductID); 
typedef void (STDCALL *PF_closeDevice)(void); 
typedef BOOLEAN (STDCALL *PF_writeData)(UCHAR* buffer); 
typedef BOOLEAN (STDCALL *PF_readData)(UCHAR* buffer); 
typedef int  (STDCALL *PF_hidRegisterDeviceNotification)(HWND hWnd); 
typedef void (STDCALL *PF_hidUnregisterDeviceNotification)(HWND hWnd); 
typedef int  (STDCALL *PF_isMyDeviceNotification)(DWORD dwData); 
typedef BOOLEAN (STDCALL *PF_setFeature)(UCHAR* buffer); 
typedef int  (STDCALL *PF_getFeatureReportLength)(); 
typedef int  (STDCALL *PF_getInputReportLength)(); 
typedef int  (STDCALL *PF_getOutputReportLength)(); 

/////////////////////////////////////////////////////////////////////////////// 

// Exported functions prototypes. 

/////////////////////////////////////////////////////////////////////////////// 
ATUSBHID_API BOOLEAN STDCALL findHidDevice(const UINT VendorID, const UINT ProductID); 

// Closes the USB device and all handles before exiting the application. 
ATUSBHID_API void STDCALL closeDevice(void); 

ATUSBHID_API BOOLEAN STDCALL writeData(UCHAR* buf); 

ATUSBHID_API BOOLEAN STDCALL readData(UCHAR* buffer); 

ATUSBHID_API int  STDCALL hidRegisterDeviceNotification(HWND hWnd); 

ATUSBHID_API void STDCALL hidUnregisterDeviceNotification(HWND hWnd); 

ATUSBHID_API int  STDCALL isMyDeviceNotification(DWORD dwData); 

ATUSBHID_API BOOLEAN STDCALL setFeature(UCHAR *buffer); 

ATUSBHID_API int  STDCALL getFeatureReportLength(void); 

ATUSBHID_API int  STDCALL getOutputReportLength(void); 

ATUSBHID_API int  STDCALL getInputReportLength(void); 

/////////////////////////////////////////////////////////////////////////////// 

#ifndef ATUSBHID_EXPORTS 


DECLARE_FUNCTION_POINTER(findHidDevice); 
DECLARE_FUNCTION_POINTER(closeDevice); 
DECLARE_FUNCTION_POINTER(writeData); 
DECLARE_FUNCTION_POINTER(readData); 
DECLARE_FUNCTION_POINTER(hidRegisterDeviceNotification); 
DECLARE_FUNCTION_POINTER(hidUnregisterDeviceNotification); 
DECLARE_FUNCTION_POINTER(isMyDeviceNotification); 
DECLARE_FUNCTION_POINTER(setFeature); 
DECLARE_FUNCTION_POINTER(getFeatureReportLength) 
DECLARE_FUNCTION_POINTER(getOutputReportLength) 
DECLARE_FUNCTION_POINTER(getInputReportLength) 

// this function call all function available in the DLL * 
static bool loadFuncPointers(HINSTANCE hLib) 
{ 
    LOAD_FUNCTION_POINTER(hLib, findHidDevice); 
    ADDR_CHECK(findHidDevice); 

    LOAD_FUNCTION_POINTER(hLib, closeDevice); 
    ADDR_CHECK(closeDevice); 

    LOAD_FUNCTION_POINTER(hLib, writeData); 
    ADDR_CHECK(writeData); 

    LOAD_FUNCTION_POINTER(hLib, readData); 
    ADDR_CHECK(readData); 

    LOAD_FUNCTION_POINTER(hLib, hidRegisterDeviceNotification); 
    ADDR_CHECK(hidRegisterDeviceNotification); 

    LOAD_FUNCTION_POINTER(hLib, hidUnregisterDeviceNotification); 
    ADDR_CHECK(hidUnregisterDeviceNotification); 

    LOAD_FUNCTION_POINTER(hLib, isMyDeviceNotification); 
    ADDR_CHECK(isMyDeviceNotification); 

    LOAD_FUNCTION_POINTER(hLib, setFeature); 
    ADDR_CHECK(setFeature); 

    LOAD_FUNCTION_POINTER(hLib, getOutputReportLength); 
    ADDR_CHECK(getOutputReportLength); 

    LOAD_FUNCTION_POINTER(hLib, getInputReportLength); 
    ADDR_CHECK(getInputReportLength); 

    LOAD_FUNCTION_POINTER(hLib, getFeatureReportLength); 
    ADDR_CHECK(getFeatureReportLength); 

    return true; 
} 

#endif 

#endif // _ATUSBHID_H_ 

Answer 1

解決它，謝謝！我不得不將頭文件包含在StdAfx.h文件中並設置預編譯頭標記。

謝謝！