Is MathML workable in Qwt?

[AlekseyK]

Created very simple MathML formula with this editor, inserted it into my code:

logitLabel->setPlainText(logitFormula(1, 2, 3, 4));
 
QString SetupPanel::logitFormula(double arg1, double arg2, double arg3, double arg4) const
{
  QString formula = QString(
    "<math><mn>%1</mn><mo>+</mo><mfrac><mn>%2</mn><mrow><mn>1</mn><mo>+</mo>"
    "<msup><mi>e</mi><mrow><mn>%3</mn><mo>&#x000B7;</mo><mi>X</mi><mo>+</mo>"
    "<mn>%4</mn></mrow></msup></mrow></mfrac></math>")
    .arg(QString::number(arg1))
    .arg(QString::number(arg2))
    .arg(QString::number(arg3))
    .arg(QString::number(arg4));
 
  return formula;
}

logitLabel->setPlainText(logitFormula(1, 2, 3, 4));

QString SetupPanel::logitFormula(double arg1, double arg2, double arg3, double arg4) const
{
  QString formula = QString(
    "<math><mn>%1</mn><mo>+</mo><mfrac><mn>%2</mn><mrow><mn>1</mn><mo>+</mo>"
    "<msup><mi>e</mi><mrow><mn>%3</mn><mo>&#x000B7;</mo><mi>X</mi><mo>+</mo>"
    "<mn>%4</mn></mrow></msup></mrow></mfrac></math>")
    .arg(QString::number(arg1))
    .arg(QString::number(arg2))
    .arg(QString::number(arg3))
    .arg(QString::number(arg4));

  return formula;
}

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However formula looks strange in application:
bad_formula.png

That is how it looks in editor:
good_formula.png

What is wrong here: MathML implementation in Qwt, formula editor, need to simplify formula or what? Is MathML ready for production here or need to search for other possibilities to render formulas?

[AlekseyK]

Some solution could be found here: http://www.qtcentre.org/threads/5429...ath-expression

Hope Qwt author will see the problem and able to add necessary patches to official sources repository.