Knowledge Base Nr: 00167 treectrl.cpp - http://www.swe-kaiser.de

MFC: CTreeCtrl snippets

  
//tree füllen
void CM3uExplorerDlg::DoFillTree()
{
    m_tree.DeleteAllItems();

    HTREEITEM ti;
    HTREEITEM ti2;

    CFileFind finder;
    char szLine[200];
    CString str, str2;

    FILE* fp = fopen("E:/projects/internet/my_home/kaiserreich/cgi-bin/k_MusikCDdata.txt", "rt");
    if (fp)
    {
        while (fgets(szLine, sizeof(szLine), fp))
        {
            //199#199# Frank Sinatra# "Thank you, Frank!"
            chop(szLine);
            str = szLine;

            str2.Format("p:/musik/%s", (const char*)str.Left(3));
            BOOL bFound = finder.FindFile(str2);
            if (bFound) //mp3-verzeichnis existiert
            {
                int nPos1 = str.Find("# ");
                int nPos2 = str.Find("# ", nPos1+2);
                str2.Format("%s:  %s", (const char*)str.Mid(nPos1+2, nPos2-nPos1-2)
                                    , (const char*)str.Mid(nPos2+2) );

                ti = m_tree.InsertItem(str2, TVI_ROOT, TVI_LAST);

                int nCDNr = atoi((const char*)str.Left(3));
                m_tree.SetItemData(ti, nCDNr);

                 /*
                #EXTM3U
                #EXTINF:-1, Lutz Goerner - Folgen der Trunksucht - Gernhardt
                P:/musik/327/327_01_Lutz_Goerner_Gedichte_2_2.mp3
                #EXTINF:-1, Lutz Goerner - Lob der Schwarzen Kirschen - Karsch
                P:/musik/327/327_02_Lutz_Goerner_Gedichte_2_2.mp3
                */
                str.Format("E:/projects/internet/my_home/kaiserreich/k_mp3lists/%03d.m3u", nCDNr);
                FILE* fp2 = fopen(str, "rt");
                if (fp2)
                {
                    fgets(szLine, sizeof(szLine), fp2);  //header überlesen:
                    while (fgets(szLine, sizeof(szLine), fp2))
                    {
                        chop(szLine);
                        str = szLine;
                        int nPos1 = str.Find (" ");
                        int nPos2 = str.Find (" - ");
                        str.Format("%s", (const char*)str.Mid(nPos2+3));

                        fgets(szLine, sizeof(szLine), fp2);  //filename
                        chop(szLine);
                        m_arMP3files.Add(szLine);

                        ti2 = m_tree.InsertItem(str, ti, TVI_LAST);
                        m_tree.SetItemData(ti2, m_arMP3files.GetSize()-1);
                    }
                    fclose(fp2);
                }

            }
        }
        fclose(fp);
    }

    m_tree.SortChildren(TVI_ROOT);
}


//über alle items loopen
void CM3uExplorerDlg::DoLoadTree(const char* lpszActFile)
{
    HTREEITEM hCurrent = m_tree.GetNextItem(TVI_ROOT, TVGN_CHILD);
    while (hCurrent != NULL)
    {
        BOOL bAllSelected = TRUE;

        HTREEITEM hCurrent2 = m_tree.GetNextItem(hCurrent, TVGN_CHILD);
        while (hCurrent2 != NULL)
        {
            if (m_tree.GetCheck(hCurrent2) == FALSE)
                bAllSelected = FALSE;

            hCurrent2 = m_tree.GetNextItem(hCurrent2, TVGN_NEXT);
        }

        if (bAllSelected)
        {
            m_tree.SetCheck(hCurrent, TRUE);
            m_tree.Expand(hCurrent, TVE_COLLAPSE);
        }

        hCurrent = m_tree.GetNextItem(hCurrent, TVGN_NEXT);
    }
}


//inhalt des trees in file speichern (als winamp playlist)
void CM3uExplorerDlg::DoSaveTree()
{
    const char* lpszFilter = "M3U Listen (*.m3u)|*.m3u|"
                          "Alle Files|*.*|"
                          "|";

    CFileDialog dlg(FALSE, "m3u", "", OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, lpszFilter);

    if (dlg.DoModal() != IDOK)
        return;

    CString strFilename = dlg.GetPathName();

    FILE* fp = fopen(strFilename, "wt");
    if (!fp)
    {
        AfxMessageBox("Datei kann nicht erzeugt werden!");
        return;
    }

    fprintf(fp, "#EXTM3U\n");

    HTREEITEM hCurrent = m_tree.GetNextItem(TVI_ROOT, TVGN_CHILD);
    while (hCurrent != NULL)
    {
        BOOL bSaveAll = m_tree.GetCheck(hCurrent);

        HTREEITEM hCurrent2 = m_tree.GetNextItem(hCurrent, TVGN_CHILD);
        while (hCurrent2 != NULL)
        {
            if (m_tree.GetCheck(hCurrent2) || bSaveAll)
            {
                fprintf(fp, "#EXTINF:-1, %s\n", (const char*)m_tree.GetItemText(hCurrent2));
                fprintf(fp, "%s\n", (const char*)m_arMP3files.GetAt(m_tree.GetItemData(hCurrent2)));
            }

            hCurrent2 = m_tree.GetNextItem(hCurrent2, TVGN_NEXT);
        }

        hCurrent = m_tree.GetNextItem(hCurrent, TVGN_NEXT);
    }

    fclose(fp);
}