c++ - MFC。保存和加载 CMFCRibbonRichEditCtrl

Question

我正在寻找匹配项并用颜色突出显示它们。在此之后我只显示它们。我需要用突出显示的词重新显示整个文本。我试图通过 std::stringstream 和 StreamIn + StreamOut 来做，但是颜色丢失了。

void RichText::saveInStringstream() 
{ 
    EDITSTREAM es = { 0, 0, editStreamOutCallback }; 
    es.dwCookie = reinterpret_cast<DWORD_PTR>(&m_rtf);   
    m_richEdit.StreamOut(SF_RTF, es); 
} 


DWORD CALLBACK RichText::editStreamOutCallback(DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb) 
{ 
    std::stringstream *rtf = reinterpret_cast<std::stringstream *>(dwCookie); 
    rtf->write(reinterpret_cast<char *>(pbBuff), cb); 
    *pcb = cb; 
    return 0; 
}

Answer 1

我仍然找到了解决方案，但使用的是 CMemFile。

void RichStream::Save(CMFCRibbonRichEditCtrl &richEdit)
{    
    file.SeekToBegin();

    EDITSTREAM es = { 0, 0, editStreamOutCallback };
    es.dwCookie = reinterpret_cast<DWORD_PTR>(&file);

    richEdit.StreamOut(SF_RTF, es);      
}

void RichStream::Load(CMFCRibbonRichEditCtrl &richEdit)
{   
    file.SeekToBegin();

    EDITSTREAM es = { 0, 0, editStreamInCallback };
    es.dwCookie = reinterpret_cast<DWORD_PTR>(&file);    

    richEdit.StreamIn(SF_RTF, es);
}

DWORD CALLBACK RichStream::editStreamOutCallback(DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)
{
    CMemFile* pFile = (CMemFile*)dwCookie;

    pFile->Write(pbBuff, cb);

    *pcb = cb;

    return 0;   
}

DWORD CALLBACK RichStream::editStreamInCallback(DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)
{
    CMemFile* pFile = (CMemFile*)dwCookie;

    *pcb = pFile->Read(pbBuff, cb);

    return 0;
}