QtXlsxWriter cannot write email link into excel cell

[ghost]

codes as follows: ///////////////////////////////////////////////////////////////////////// QXlsx::Document doc;

// <a href="mailto:[email protected]">mail address QString mailLink("<a href="mailto:[email protected]">mail address"); bool success = doc.write(1, 1, mailLink);

doc.saveAs("demo.xlsx"); /////////////////////////////////////////////////////////////////////////

although the success is true, but when open demo.xlsx, the first cell in it has no contents!!! Is there someone know the reason???