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#include "cabinet.h"
#include <desktray.h>
#include "uemapp.h"
#pragma warning(disable:4229) // No warnings when modifiers used on data
// Delay loading mechanism. 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
//
// These macros produce code that looks like
#if 0
BOOL GetOpenFileNameA(LPOPENFILENAME pof){ static BOOL (*pfnGetOpenFileNameA)(LPOPENFILENAME pof);
if (ENSURE_LOADED(g_hinstCOMDLG32, "COMDLG32.DLL")) { if (pfnGetOpenFileNameA == NULL) pfnGetOpenFileNameA = (BOOL (*)(LPOPENFILENAME))GetProcAddress(g_hinstCOMDLG32, "GetOpenFileNameA");
if (pfnGetOpenFileNameA) return pfnGetOpenFileNameA(pof); } return -1;}#endif
/**********************************************************************/
#ifdef DEBUG
void _DumpLoading(LPTSTR pszDLL, LPTSTR pszFunc){ if (g_dwDumpFlags & DF_DELAYLOADDLL) { TraceMsg(TF_ALWAYS, "DLLLOAD: Loading %s for the first time for %s", pszDLL, pszFunc); }}#define ENSURE_LOADED(_hinst, _dll, pszfn) (_hinst ? _hinst : (_DumpLoading(TEXT(#_dll), pszfn), _hinst = LoadLibrary(TEXT(#_dll))))
#else
#define ENSURE_LOADED(_hinst, _dll, pszfn) (_hinst ? _hinst : (_hinst = LoadLibrary(TEXT(#_dll))))
#endif // DEBUG
#define DELAY_LOAD_ERR(_hinst, _dll, _ret, _fn, _args, _nargs, _err) \
_ret __stdcall _fn _args \{ \ static _ret (* __stdcall _pfn##_fn) _args = NULL; \ if (!ENSURE_LOADED(_hinst, _dll, TEXT(#_fn))) \ { \ /*ASSERT_MSG((BOOL)_hinst, "LoadLibrary failed on " ## #_dll);*/ \ TraceMsg(TF_ERROR, "LoadLibrary failed on " ## #_dll); \ return (_ret)_err; \ } \ if (_pfn##_fn == NULL) \ { \ *(FARPROC*)&(_pfn##_fn) = GetProcAddress(_hinst, #_fn); \ /*ASSERT_MSG(NULL != _pfn##_fn, "GetProcAddress failed on " ## #_fn);*/ \ if (_pfn##_fn == NULL) \ return (_ret)_err; \ } \ 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_BOOL(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, BOOL, _fn, _args, _nargs, FALSE)
#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, TEXT(#_fn))) \ { \ /*AssertMsg((BOOL)_hinst, "LoadLibrary failed on " ## #_dll);*/ \ TraceMsg(TF_ERROR, "LoadLibrary failed on " ## #_dll); \ return; \ } \ if (_pfn##_fn == NULL) \ { \ *(FARPROC*)&(_pfn##_fn) = GetProcAddress(_hinst, #_fn); \ /*AssertMsg(NULL != _pfn##_fn, "GetProcAddress failed on " ## #_fn);*/ \ if (_pfn##_fn == NULL) \ return; \ } \ _pfn##_fn _nargs; \ }
//
// For private entrypoints exported by ordinal.
//
#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, TEXT("(ordinal ") TEXT(#_ord) TEXT(")"))) \ { \ 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(_hinst, _dll, _ret, _fn, _ord, _args, _nargs) DELAY_LOAD_ORD_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, 0)
#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, TEXT("(ordinal ") TEXT(#_ord) TEXT(")"))) \ { \ 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; \}
#pragma warning(default:4229)
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