当文档被修改时,如何在标题上加上标志'*'

重载CDocument类的虚函数virtual SetModifiedFlag:

void CTest2Doc::SetModifiedFlag(BOOL bModified){ CString strTitle = GetTitle(); CString strDirtyFlag = " *"; // note space before the '*' // so we don't break Save As dialog if (!IsModified() && bModified) { SetTitle(strTitle + strDirtyFlag); } else if ( IsModified() && !bModified ) { int nTitleLength = strTitle.GetLength(); int nDirtyLength = strDirtyFlag.GetLength(); SetTitle( strTitle.Left(nTitleLength - nDirtyLength) ); } UpdateFrameCounts(); CDocument::SetModifiedFlag(bModified);}