170 lines
7.1 KiB
C++
170 lines
7.1 KiB
C++
//----------------------------------------------------------------------------
|
|
//
|
|
// Microsoft Windows
|
|
// Copyright (C) Microsoft Corporation, 1997
|
|
//
|
|
// File:
|
|
//
|
|
// Contents:
|
|
//
|
|
// Classes:
|
|
//
|
|
// Functions:
|
|
//
|
|
// History:
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
#include "stdinc.h"
|
|
|
|
#pragma warning(disable:4229) // No warnings when modifiers used on data
|
|
|
|
//----------------------------------------------------------------------------
|
|
// Delay loading mechanism. [Stolen from shdocvw.]
|
|
//
|
|
// This allows you to write code as if you are
|
|
// calling implicitly linked APIs, and yet have these APIs really be
|
|
// explicitly linked. You can reduce the initial number of DLLs that
|
|
// are loaded (load on demand) using this technique.
|
|
//
|
|
// Use the following macros to indicate which APIs/DLLs are delay-linked
|
|
// and -loaded.
|
|
//
|
|
// DELAY_LOAD
|
|
// DELAY_LOAD_HRESULT
|
|
// DELAY_LOAD_SAFEARRAY
|
|
// DELAY_LOAD_UINT
|
|
// DELAY_LOAD_INT
|
|
// DELAY_LOAD_VOID
|
|
//
|
|
// Use these macros for APIs that are exported by ordinal only.
|
|
//
|
|
// DELAY_LOAD_ORD
|
|
// DELAY_LOAD_ORD_VOID
|
|
//
|
|
// Use these macros for APIs that only exist on the integrated-shell
|
|
// installations (i.e., a new shell32 is on the system).
|
|
//
|
|
// DELAY_LOAD_SHELL
|
|
// DELAY_LOAD_SHELL_HRESULT
|
|
// DELAY_LOAD_SHELL_VOID
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
|
|
#define ENSURE_LOADED(_hinst, _dll, pszfn) (_hinst ? TRUE : NULL!=(_hinst = LoadLibraryA(#_dll)))
|
|
|
|
#define DELAY_LOAD_ERR(_hinst, _dll, _ret, _fn, _args, _nargs, _err) \
|
|
static _ret (* __stdcall _pfn##_fn) _args = NULL; \
|
|
_ret __stdcall _fn _args \
|
|
{ \
|
|
if (!ENSURE_LOADED(_hinst, _dll, #_fn)) \
|
|
{ \
|
|
AssertMsg((BOOL)_hinst, "LoadLibrary failed on " ## #_dll); \
|
|
return (_ret)_err; \
|
|
} \
|
|
if (_pfn##_fn == NULL) \
|
|
{ \
|
|
*(FARPROC*)&(_pfn##_fn) = GetProcAddress(_hinst, #_fn); \
|
|
AssertMsg((BOOL)_pfn##_fn, "GetProcAddress failed on " ## #_fn); \
|
|
if (_pfn##_fn == NULL) \
|
|
return (_ret)_err; \
|
|
} \
|
|
return _pfn##_fn _nargs; \
|
|
}
|
|
|
|
#define DELAY_LOAD_VOID(_hinst, _dll, _fn, _args, _nargs) \
|
|
void __stdcall _fn _args \
|
|
{ \
|
|
static void (* __stdcall _pfn##_fn) _args = NULL; \
|
|
if (!ENSURE_LOADED(_hinst, _dll, #_fn)) \
|
|
{ \
|
|
AssertMsg((BOOL)_hinst, "LoadLibrary failed on " ## #_dll); \
|
|
return; \
|
|
} \
|
|
if (_pfn##_fn == NULL) \
|
|
{ \
|
|
*(FARPROC*)&(_pfn##_fn) = GetProcAddress(_hinst, #_fn); \
|
|
AssertMsg((BOOL)_pfn##_fn, "GetProcAddress failed on " ## #_fn); \
|
|
if (_pfn##_fn == NULL) \
|
|
return; \
|
|
} \
|
|
_pfn##_fn _nargs; \
|
|
}
|
|
|
|
#define DELAY_LOAD(_hinst, _dll, _ret, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, _ret, _fn, _args, _nargs, 0)
|
|
#define DELAY_LOAD_HRESULT(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, HRESULT, _fn, _args, _nargs, E_FAIL)
|
|
#define DELAY_LOAD_SAFEARRAY(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, SAFEARRAY *, _fn, _args, _nargs, NULL)
|
|
#define DELAY_LOAD_DWORD(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, DWORD, _fn, _args, _nargs, 0)
|
|
#define DELAY_LOAD_UINT(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, UINT, _fn, _args, _nargs, 0)
|
|
#define DELAY_LOAD_INT(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, INT, _fn, _args, _nargs, 0)
|
|
|
|
#define DELAY_LOAD_ORD_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, _err) \
|
|
_ret __stdcall _fn _args \
|
|
{ \
|
|
static _ret (* __stdcall _pfn##_fn) _args = NULL; \
|
|
if (!ENSURE_LOADED(_hinst, _dll, "(ordinal " ## #_ord ## ")")) \
|
|
{ \
|
|
TraceMsg(TF_ERROR, "LoadLibrary failed on " ## #_dll); \
|
|
return (_ret)_err; \
|
|
} \
|
|
if (_pfn##_fn == NULL) \
|
|
{ \
|
|
*(FARPROC*)&(_pfn##_fn) = GetProcAddress(_hinst, (LPSTR) _ord); \
|
|
\
|
|
/* GetProcAddress always returns non-NULL, even for bad ordinals. \
|
|
But do the check anyways... */ \
|
|
\
|
|
if (_pfn##_fn == NULL) \
|
|
return (_ret)_err; \
|
|
} \
|
|
return _pfn##_fn _nargs; \
|
|
}
|
|
|
|
#define DELAY_LOAD_ORD_VOID(_hinst, _dll, _fn, _ord, _args, _nargs) \
|
|
void __stdcall _fn _args \
|
|
{ \
|
|
static void (* __stdcall _pfn##_fn) _args = NULL; \
|
|
if (!ENSURE_LOADED(_hinst, _dll, "(ordinal " ## #_ord ## ")")) \
|
|
{ \
|
|
TraceMsg(TF_ERROR, "LoadLibrary failed on " ## #_dll); \
|
|
return; \
|
|
} \
|
|
if (_pfn##_fn == NULL) \
|
|
{ \
|
|
*(FARPROC*)&(_pfn##_fn) = GetProcAddress(_hinst, (LPSTR) _ord); \
|
|
\
|
|
/* GetProcAddress always returns non-NULL, even for bad ordinals. \
|
|
But do the check anyways... */ \
|
|
\
|
|
if (_pfn##_fn == NULL) \
|
|
return; \
|
|
} \
|
|
_pfn##_fn _nargs; \
|
|
}
|
|
|
|
#define DELAY_LOAD_ORD(_hinst, _dll, _ret, _fn, _ord, _args, _nargs) DELAY_LOAD_ORD_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, 0)
|
|
|
|
//
|
|
// And now the DLLs which are delay loaded
|
|
//
|
|
|
|
// --------- SHDOCVW.DLL ---------------
|
|
|
|
// NOTE: These may not remain private.
|
|
HINSTANCE g_hinstSHDOCVW = NULL;
|
|
|
|
DELAY_LOAD_ORD(g_hinstSHDOCVW, SHDOCVW.DLL, DWORD, SHRestricted2A, 158,
|
|
(BROWSER_RESTRICTIONS rest, LPCSTR pszUrl, DWORD dwReserved), (rest, pszUrl, dwReserved));
|
|
|
|
DELAY_LOAD_ORD(g_hinstSHDOCVW, SHDOCVW.DLL, DWORD, SHRestricted2W, 159,
|
|
(BROWSER_RESTRICTIONS rest, LPCWSTR pwzUrl, DWORD dwReserved), (rest, pwzUrl, dwReserved));
|
|
|
|
DELAY_LOAD_ORD_ERR(g_hinstSHDOCVW, SHDOCVW.DLL, HRESULT, CDDEAuto_Navigate, 162,
|
|
(BSTR str, HWND* phwnd, long lTransID), (str, phwnd, lTransID), E_FAIL);
|
|
|
|
#ifdef UNIX
|
|
DELAY_LOAD_ORD(g_hinstSHDOCVW, SHDOCVW.DLL, HRESULT, SHAddSubscribeFavorite,163, (HWND hwnd, LPCWSTR pwszURL, LPCWSTR pwszName, DWORD dwFlags, SUBSCRIPTIONTYPE subsType, SUBSCRIPTIONINFO* pInfo), (hwnd, pwszURL, pwszName, dwFlags, subsType, pInfo));
|
|
#endif /* UNIX */
|
|
|
|
#pragma warning(default:4229)
|
|
|