151 lines
3.6 KiB
C++
151 lines
3.6 KiB
C++
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/*****************************************************************************\
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* MODULE: dllini.cxx
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*
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* Dll entry/exit routines.
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*
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*
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* Copyright (C) 1997-1998 Hewlett-Packard Company.
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* Copyright (C) 1997-1998 Microsoft Corporation.
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*
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* History:
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* 10-Oct-1997 GFS Created
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* 22-Jun-1998 CHW Cleaned
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*
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\*****************************************************************************/
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#include "libpriv.h"
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/*********************************************************** local routine ***\
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* dll_ThunkError
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*
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*
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\*****************************************************************************/
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BOOL dll_ThunkError(VOID)
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{
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LPTSTR pszMsg;
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int nFmt;
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pszMsg = NULL;
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nFmt = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
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NULL,
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GetLastError(),
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR)&pszMsg,
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0,
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NULL);
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if (pszMsg && (nFmt > 0)) {
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// Display the string.
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//
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MessageBox(NULL, pszMsg, g_szMsgThunkFail, MB_OK | MB_ICONINFORMATION);
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// Free the buffer.
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//
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GlobalFree(pszMsg);
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}
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return FALSE;
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}
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/*********************************************************** local routine ***\
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* dll_ProcessAttach
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*
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* Called when the process attaches to the dynalink. This is the place
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* that is good to allocate global resouces.
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*
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\*****************************************************************************/
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_inline BOOL dll_ProcessAttach(
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BOOL bThk,
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HINSTANCE hModule)
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{
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BOOL bRet;
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// Set the global hInstance.
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//
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g_hLibInst = hModule;
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bRet = InitStrings();
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if (bRet && (bThk == FALSE))
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bRet = dll_ThunkError();
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return bRet;
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}
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/*********************************************************** local routine ***\
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* dll_ProcessDetach
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*
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* Called when a process detaches from the DLL. This is only called once,
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* so all resources allocated on behalf of the dynalink are freed.
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*
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\*****************************************************************************/
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_inline BOOL dll_ProcessDetach(
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BOOL bThk,
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HINSTANCE hModule)
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{
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if (bThk == FALSE)
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dll_ThunkError();
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FreeStrings();
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return TRUE;
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}
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/****************************************************** entry/exit routine ***\
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* DllMain
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*
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* This routine is called upon startup of the dynalink. If all goes well
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* then return TRUE. By returning FALSE you prevent the dynalink from
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* loading.
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*
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* The parameters to this function double under DOS and NT. The meanings are
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* slightly different however.
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*
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* Parameter DOS NT
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* -------- ----------------- -------------
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* hHandle Instance handle Module handle (same as instance)
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* nAttach Dynalink Data*Seg Attach type.
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* pContext Command Line args pointer to context structur.
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*
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*
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\*****************************************************************************/
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BOOL APIENTRY DllMain(
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HINSTANCE hModule,
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int nAttach,
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PCONTEXT pContext)
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{
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BOOL bRet;
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BOOL bThk;
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UNREFPARM(pContext);
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// Connect the thunk.
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//
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bThk = thk_ThunkConnect32(g_szDll16, g_szDll32, hModule, nAttach);
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switch (nAttach) {
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case DLL_PROCESS_ATTACH:
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bRet = dll_ProcessAttach(bThk, hModule);
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break;
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case DLL_PROCESS_DETACH:
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bRet = dll_ProcessDetach(bThk, hModule);
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break;
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case DLL_THREAD_ATTACH:
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case DLL_THREAD_DETACH:
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bRet = TRUE;
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break;
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}
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return bRet;
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}
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