How to insert a specific symbol in the QT widget

const QChar MathSymbolSquereRoot(0x221A);
const QChar MathSymbolPi(0x03A0);
const QChar MathSymbolDelta(0x0394);
const QChar MathSymbolSigma (0x03A3);

I want to make buttons with specific mathematical symbols, such as square root, delta, sigma, pi, etc. How to do this? I am using Qt 5 and unicode. Thank you

Just need any Unicode documentation and define the required constants:

< pre>const QChar MathSymbolSquereRoot(0x221A);
const QChar MathSymbolPi(0x03A0);
const QChar MathSymbolDelta(0x0394);
const QChar MathSymbolSigma(0x03A3);

Please Remember, you must use a font that supports these Unicode characters!