gecko-dev/cmd/winfe/qahook.cpp

93 строки
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
//
// Necessary hooks for QA partner to access custom objects within
// Communicator
//
#include <windows.h>
#include <windowsx.h>
#include "qahook.h"
static HANDLE hSharedMemory = NULL;
static CSharedData *pData = NULL;
//
// *open existing* shared memory chunk
// once you have the pointer to the new segment
// use this pointer to access data, e.g.:
//
// if(pData->m_dwBytesUsed > 0)
// {
// // use pData->m_buf here
// }
//
CSharedData *
OpenExistingSharedMemory(void)
{
#ifdef WIN32
DWORD dwSize;
LPCTSTR szObjectName = SHARED_MEMORY_CHUNK_NAME;
if (pData != NULL)
return pData;
hSharedMemory = OpenFileMapping(
FILE_MAP_WRITE /*PAGE_READWRITE*/,FALSE,szObjectName);
if(hSharedMemory == 0)
{
return NULL;
}
pData = (CSharedData *)MapViewOfFile(
hSharedMemory,FILE_MAP_ALL_ACCESS,0,0,0);
if(pData == NULL)
{
return NULL;
}
dwSize = pData->m_dwSize;
return pData;
#else
return NULL;
#endif // WIN32
}
//
// to close shared memory segment
//
void
CloseSharedMemory(void)
{
#ifdef WIN32
if (pData != 0)
{
UnmapViewOfFile(pData);
pData = 0;
}
if(hSharedMemory != 0)
{
CloseHandle(hSharedMemory);
hSharedMemory = 0;
}
#else
return;
#endif // WIN32
}