about CreateFileMapping on wince

最新推荐文章于 2020-12-31 00:09:29 发布

weixin_30663391

最新推荐文章于 2020-12-31 00:09:29 发布

阅读量84

点赞数

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/sea918/archive/2010/04/21/1717553.html

本文详细介绍了如何创建和映射文件映射到内存，用于存储和访问范围信息，包括如何通过窗口消息获取和更新该信息。

HANDLE hMapFile;
LPVOID lpMapAddress;
//SendMessage(g_hwndScope, SCM_GETSCOPEINFO, 0, (LPARAM)psi);
hMapFile = CreateFileMapping (INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof(SCOPEINFO), (LPCTSTR)TEXT("MAP_FILE_GETSCOPEINFO"));
if (hMapFile == NULL)
{
}
lpMapAddress = MapViewOfFile(hMapFile,FILE_MAP_ALL_ACCESS, 0, 0, 0);
if (lpMapAddress)
{
     memcpy((SCOPEINFO*)lpMapAddress, psi, sizeof(SCOPEINFO));
     SendMessage(g_hwndScope, SCM_GETSCOPEINFO, 0, (LPARAM)psi);
     memcpy(psi, (SCOPEINFO*)lpMapAddress, sizeof(SCOPEINFO));
     UnmapViewOfFile(lpMapAddress);
}
if (hMapFile)
{
     CloseHandle(hMapFile);
}

hMapFile = CreateFileMapping (INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof(SCOPEINFO), TEXT("MAP_FILE_GETSCOPEINFO"));
           if (hMapFile == NULL)
           {
               bRet = ScopeControl::GetScopeInfo(hwnd, (SCOPEINFO*)lParam);
           }
           lpMapAddress = MapViewOfFile(hMapFile,FILE_MAP_ALL_ACCESS,0,0,0);
           if (lpMapAddress)
           {
               bRet = ScopeControl::GetScopeInfo(hwnd, (SCOPEINFO*)lpMapAddress);
           }
           if (hMapFile)
           {
               CloseHandle(hMapFile);
           }

转载于:https://www.cnblogs.com/sea918/archive/2010/04/21/1717553.html