113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
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#ifndef __FDI_D_H_INCLUDED__
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#define __FDI_D_H_INCLUDED__
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#include "fdi.h"
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// FDI.DLL delay-load class
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class CFdiDll
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{
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public:
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#define DELAY_FDI_HFDI(_fn, _args, _nargs) \
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HFDI _fn _args { \
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HRESULT hres = Init(); \
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HFDI hfdi; \
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if (SUCCEEDED(hres)) { \
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hfdi = _pfn##_fn _nargs; \
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} \
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return hfdi; } \
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HFDI (FAR DIAMONDAPI* _pfn##_fn) _args;
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#define DELAY_FDI_BOOL(_fn, _args, _nargs) \
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BOOL _fn _args { \
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HRESULT hres = Init(); \
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BOOL bRet; \
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if (SUCCEEDED(hres)) { \
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bRet = _pfn##_fn _nargs; \
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} \
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return bRet; } \
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BOOL (FAR DIAMONDAPI* _pfn##_fn) _args;
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HRESULT Init(void);
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CFdiDll(BOOL fFreeLibrary = TRUE);
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~CFdiDll();
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BOOL m_fInited;
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BOOL m_fFreeLibrary;
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HMODULE m_hMod;
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DELAY_FDI_HFDI(FDICreate,
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(PFNALLOC pfnalloc,
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PFNFREE pfnfree,
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PFNOPEN pfnopen,
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PFNREAD pfnread,
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PFNWRITE pfnwrite,
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PFNCLOSE pfnclose,
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PFNSEEK pfnseek,
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int cpuType,
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PERF perf),
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(pfnalloc, pfnfree, pfnopen, pfnread, pfnwrite, pfnclose, pfnseek, cpuType, perf));
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DELAY_FDI_BOOL(FDICopy,
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(HFDI hfdi,
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char *pszCabinet,
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char *pszCabPath,
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int flags,
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PFNFDINOTIFY pfnfdin,
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PFNFDIDECRYPT pfnfdid,
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void *pvUser),
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(hfdi, pszCabinet, pszCabPath, flags, pfnfdin, pfnfdid, pvUser));
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DELAY_FDI_BOOL(FDIIsCabinet,
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(HFDI hfdi,
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int hf,
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PFDICABINETINFO pfdici),
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(hfdi, hf, pfdici));
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DELAY_FDI_BOOL(FDIDestroy,
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(HFDI hfdi),
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(hfdi));
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};
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inline CFdiDll::CFdiDll(BOOL fFreeLibrary)
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{
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m_fInited = FALSE;
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m_fFreeLibrary = fFreeLibrary;
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}
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inline CFdiDll::~CFdiDll()
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{
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if (m_fInited && m_fFreeLibrary) {
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FreeLibrary(m_hMod);
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}
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}
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inline HRESULT CFdiDll::Init(void)
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{
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if (m_fInited) {
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return S_OK;
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}
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m_hMod = LoadLibrary(TEXT("CABINET.DLL"));
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if (!m_hMod) {
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return HRESULT_FROM_WIN32(GetLastError());
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}
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#define CHECKAPI(_fn) \
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*(FARPROC*)&(_pfn##_fn) = GetProcAddress(m_hMod, #_fn); \
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if (!(_pfn##_fn)) return E_UNEXPECTED;
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CHECKAPI(FDICreate);
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CHECKAPI(FDICopy);
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CHECKAPI(FDIIsCabinet);
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CHECKAPI(FDIDestroy);
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m_fInited = TRUE;
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return S_OK;
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}
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#endif
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