QTableWidget Headers don't hangle accentuated characters

[alexisdm]

You have to set utf8 as the default for decoding literal strings to QString with

QTextCodec::setCodecForCStrings(QTextCodec::codecForName("utf8"));

QTextCodec::setCodecForCStrings(QTextCodec::codecForName("utf8"));

To copy to clipboard, switch view to plain text mode 

preferably before you create any widget.