String qtf = GenerateSomeQtf();

FileSel fsHtml;
fsHtml.Type(t_("HTML files"), "*.html")
	  .AllFilesType();

if(!fsHtml.ExecuteSaveAs(t_("Export to html")))
	return;

String fname = ~fsHtml + "." + "html";
FileOut out(fname);
if(!out) { return; }

Index<String> css; //??
const VectorMap<String, String> links;  //??
String basedir = fsHtml.GetActiveDir();

SaveStream(out, EncodeHtml(ParseQTF(qtf), css, links, basedir));