Change you project settings to Unicode support.Use
SetWindowText()
function to set the text.
m_UniCodeButton.SetWindowText(_T("\x03B1\x03B2\x03B3"));
This will print Greek Small letters Alpha, Beeta, Gamma letters on Button.
Refer the following PDF for Unicode values of Greek letters
http://unicode.org/charts/PDF/U0370.pdf[
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