size of QChar

[babu198649]

hi
The QChar doc says

The QChar class provides a 16-bit Unicode character.

But it seems a single character is stored as one byte.

QChar ch('a');
QByteArray arr(QString(ch).toAscii());
qDebug()<<arr.size();//The OutPut is 1.

QChar ch('a');
QByteArray arr(QString(ch).toAscii());
qDebug()<<arr.size();//The OutPut is 1.

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I had expected the size to be 2 bytes.

[lvi]

From QString::toAscii:

Returns an 8-bit ASCII representation of the string as a QByteArray.

[babu198649]

i have already used it in example of first post.

[lvi]

I mentioned it to explain why size() returns 1.

QString::toAscii() returns the 8-bit ascii representation of the character.

So

QString(ch).toAscii();

QString(ch).toAscii();

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takes your 2-byte Unicode character and returns the 1-byte ascii version of it, hence arr.size() gives 1.

[babu198649]

takes your 2-byte Unicode character and returns the 1-byte ascii version of it

where is the other byte.

[lvi]

where is the other byte.

Gone :-)
Information is lost in the conversion.