QDomDocument doesn't accept parentheses when parsing an xml file

[hind]

When there is a parenthesis contained in a node of xml file the QDomDocument::setContent gives error "error occurred while parsing element". The error column is right where the parenthesis is. Remove all parentheses and there is no error.

Codes:

QFile file(QApplication::applicationDirPath()+"/a.xml");
file.open(QIODevice::ReadOnly | QIODevice::Text);
QDomDocument doc;
doc.setContent(&file);
file.close();

QFile file(QApplication::applicationDirPath()+"/a.xml");
file.open(QIODevice::ReadOnly | QIODevice::Text);
QDomDocument doc;
doc.setContent(&file);
file.close();

To copy to clipboard, switch view to plain text mode 

xml file:

<root>
    <node(>
    </node(>
</root>

<root>
    <node(>
    </node(>
</root>

To copy to clipboard, switch view to plain text mode 

I have googled but found no restriction to parentheses usage in xml file. And I can save nodes with parentheses successfully, with QDomDocument::save. How can I retrieve it?

[ChrisW67]

QDomDocument is telling you that the input is malformed because parentheses are not permitted in an XML element Name: http://www.w3.org/TR/REC-xml/#sec-starttags

[hind]

Well it looks like my manual does not mention that. And it's strange that the QDomDocument allows it when saving the doc to xml files.
So what should I do if the users insist putting parentheses in the element names?

[wysota]

Convert them to another set of characters before passing the data to QDomDocument.

[d_stranz]

Or train your users to correctly specify XML element names. Refuse to permit anything except allowed characters in XML strings and put up an error dialog if the user types a character that isn't allowed by the standard.