adding special symbol unicode to qstring

[wagmare]

hi freinds/Experts,

I am adding special symbols to QString using

uint32_t val = 0x221A;  //Roots
    QString symbolText  = QChar(val);
    widget->setText(symbolText);

uint32_t val = 0x221A;  //Roots
    QString symbolText  = QChar(val);
    widget->setText(symbolText);

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but for some range i not able to add those special characters

ex: 0x22F6 to 0x22FB , 0x2A0B to 0x2A1C.
these special mathematical symbols i have to add into my widget text.
for these ranges the output is always a empty box.

is it a problem with 32 bit char
QString is not supporting it
the way i implemented is wrong.

please help me.

[ChrisW67]

If you mean you see a character in the widget but it looks like a box instead of "SQUARE ROOT" (http://www.fileformat.info/info/unic...221a/index.htm) then it is likely that the font you are using does not contain a glyph for that Unicode code point. This replacment symbol is often, but not always, the "WHITE SQUARE" glyph (http://www.fileformat.info/info/unic...25a1/index.htm)

[wagmare]

thanks chris . your answer is right. i have to give options to select font also.