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|
//---------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation 1993-1995
//
// File: dll.c
//
// This file contains the library entry points
//
// History:
// 12-23-93 ScottH Created
// 9-22-95 ScottH Ported to NT
//
//---------------------------------------------------------------------------
#include "proj.h"
#include <rovdbg.h> // debug assertion code
// Global data
//
int g_cProcesses = 0;
BOOL g_bAdminUser;
#ifdef WIN32
CRITICAL_SECTION g_csDll = { 0 };
#endif // WIN32
/*----------------------------------------------------------
Purpose: Initialize the DLL
Returns:
Cond: --
*/
BOOL PRIVATE Dll_Initialize(void)
{
BOOL bRet = TRUE;
InitCommonControls();
return bRet;
}
/*----------------------------------------------------------
Purpose: Register window classes per process
Returns:
Cond: --
*/
BOOL PRIVATE InitWindowClasses(
HINSTANCE hinst)
{
return TRUE;
}
/*----------------------------------------------------------
Purpose: Terminate DLL
Returns: --
Cond: --
*/
BOOL PRIVATE Dll_Terminate(
HINSTANCE hinst)
{
return TRUE;
}
/*----------------------------------------------------------
Purpose: Unregister window classes per process
Returns:
Cond: --
*/
void PRIVATE TermWindowClasses(
HINSTANCE hinst)
{
}
/*----------------------------------------------------------
Purpose: Attach a process to this DLL
Returns: --
Cond: --
*/
BOOL PRIVATE Dll_ProcessAttach(HINSTANCE hDll)
{
BOOL bSuccess = TRUE;
#ifdef WIN32
if (g_cProcesses == 0)
{
InitializeCriticalSection(&g_csDll);
#ifndef WIN95
g_bAdminUser = IsAdminUser();
#endif // WIN95
}
#endif // WIN32
if (bSuccess)
{
g_hinst = hDll;
#ifdef DEBUG
// We do this simply to load the debug .ini flags
//
RovComm_ProcessIniFile();
TRACE_MSG(TF_GENERAL, "Process Attach [%d] (hDll = %lx)", g_cProcesses, hDll);
DEBUG_BREAK(BF_ONPROCESSATT);
#endif
if (g_cProcesses++ == 0)
{
bSuccess = Dll_Initialize();
}
if (bSuccess)
{
// (Only do this if we succeeded above)
//
// Register the window classes again (they are per-process)
//
bSuccess = InitWindowClasses(hDll);
}
}
return bSuccess;
}
/*----------------------------------------------------------
Purpose: Detach a process from the DLL
Returns: --
Cond: --
*/
BOOL PRIVATE Dll_ProcessDetach(HINSTANCE hDll)
{
BOOL bSuccess = TRUE;
ASSERT(hDll == g_hinst);
DEBUG_CODE( TRACE_MSG(TF_GENERAL, "Process Detach [%d] (hDll = %lx)",
g_cProcesses-1, hDll); )
DEBUG_CODE( DEBUG_BREAK(BF_ONPROCESSDET); )
if (--g_cProcesses == 0)
{
bSuccess = Dll_Terminate(g_hinst);
}
#ifdef WIN32
if (g_cProcesses == 0)
{
DeleteCriticalSection(&g_csDll);
}
#endif // WIN32
TermWindowClasses(hDll);
return bSuccess;
}
//
// Per-instance data
//
#pragma data_seg(DATASEG_PERINSTANCE)
HINSTANCE g_hinst = 0;
#pragma data_seg()
// **************************************************************************
// WIN32 specific code
// **************************************************************************
#ifdef WIN32
#ifdef DEBUG
BOOL g_bExclusive=FALSE;
#endif
/*----------------------------------------------------------
Purpose: Enter an exclusive section
Returns: --
Cond: --
*/
void PUBLIC Dll_EnterExclusive(void)
{
EnterCriticalSection(&g_csDll);
#ifdef DEBUG
g_bExclusive = TRUE;
#endif
}
/*----------------------------------------------------------
Purpose: Leave an exclusive section
Returns: --
Cond: --
*/
void PUBLIC Dll_LeaveExclusive(void)
{
#ifdef DEBUG
g_bExclusive = FALSE;
#endif
LeaveCriticalSection(&g_csDll);
}
/*----------------------------------------------------------
Purpose: Win32 Libmain
Returns: --
Cond: --
*/
BOOL APIENTRY LibMain(
HANDLE hDll,
DWORD dwReason,
LPVOID lpReserved)
{
switch(dwReason)
{
case DLL_PROCESS_ATTACH:
Dll_ProcessAttach(hDll);
break;
case DLL_PROCESS_DETACH:
Dll_ProcessDetach(hDll);
break;
case DLL_THREAD_ATTACH:
#ifdef DEBUG
ENTER_X()
{
// We do this simply to load the debug .ini flags
//
RovComm_ProcessIniFile();
TRACE_MSG(TF_GENERAL, "Thread Attach [%d] (hDll = %lx)",
g_cProcesses, hDll);
}
LEAVE_X()
DEBUG_BREAK(BF_ONTHREADATT);
#endif
break;
case DLL_THREAD_DETACH:
#ifdef DEBUG
ENTER_X()
{
TRACE_MSG(TF_GENERAL, "Thread Detach [%d] (hDll = %lx)",
g_cProcesses, hDll);
}
LEAVE_X()
DEBUG_BREAK(BF_ONTHREADDET);
#endif
break;
default:
break;
}
return TRUE;
}
#else // WIN32
// **************************************************************************
// WIN16 specific code
// **************************************************************************
BOOL CALLBACK LibMain(HINSTANCE hinst, UINT wDS, DWORD unused)
{
return Dll_ProcessAttach(hinst);
}
BOOL CALLBACK WEP(BOOL fSystemExit)
{
return Dll_ProcessDetach(g_hinst);
}
#endif // WIN32
|
