深入浅出MFC“文档/视图”架构(3)――文档
2009-02-11 20:00:34 来源:WEB开发网打开文档的函数CDocument::OnOpenDocument完成的工作包括如下几步:
(1)打开文件对象;
(2)调用DeleteDontents();
(3)建立与此文件对象相关联的CArchive对象;
(4)调用应用程序文档对象的Serialize()函数;
(5)关闭CArchive对象、文件对象。
BOOL CDocument::OnSaveDocument(LPCTSTR lpszPathName)
{
CFileException fe;
CFile* pFile = NULL;
pFile = GetFile(lpszPathName, CFile::modeCreate |
CFile::modeReadWrite | CFile::shareExclusive, &fe);
if (pFile == NULL)
{
ReportSaveLoadException(lpszPathName, &fe,
TRUE, AFX_IDP_INVALID_FILENAME);
return FALSE;
}
CArchive saveArchive(pFile, CArchive::store | CArchive::bNoFlushOnDelete);
saveArchive.m_pDocument = this;
saveArchive.m_bForceFlat = FALSE;
TRY
{
CWaitCursor wait;
Serialize(saveArchive); // save me
saveArchive.Close();
ReleaseFile(pFile, FALSE);
}
CATCH_ALL(e)
{
ReleaseFile(pFile, TRUE);
TRY
{
ReportSaveLoadException(lpszPathName, e,
TRUE, AFX_IDP_FAILED_TO_SAVE_DOC);
}
END_TRY
DELETE_EXCEPTION(e);
return FALSE;
}
END_CATCH_ALL
SetModifiedFlag(FALSE); // back to unmodified
return TRUE; // success
}
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