C++ QString to QByteArray Conversion

J.Hilk

@RuWex

https://doc.qt.io/qt-6/qstring.html#toLatin1

RuWex

@J-Hilk
what wrond did I do?

jsulm

@RuWex said in C++ QString to QByteArray Conversion:

what wrond did I do?

How should we know?
You asked a question and got a link to a method which does what you asked - did you read it?

RuWex

@jsulm
yes but @J-Hilk give me link :
Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct

Qt Needs YOUR vote: https://bugreports.qt.io/browse/QTQAINFRA-4121
why:(

jsulm

@RuWex said in C++ QString to QByteArray Conversion:

but @J-Hilk give me link

He did not. This link is part of his signature...

RuWex

its not work:

mainwind->WriteSerial(line[i]::toLatin1());
what wrong?

jsulm

@RuWex said in C++ QString to QByteArray Conversion:

what wrong?

Your code.
toLating1() is not a static method...

RuWex

the error is:

jsulm

@RuWex Please learn C++ basics!

mainwind->WriteSerial(line[i].toLatin1());

RuWex

@jsulm ou, I tried it before but its not work too:(

jsulm

@RuWex said in C++ QString to QByteArray Conversion:

I tried it before but its not work too:(

It would be really nice if you would post the error you get instead of simply saying that it did not work...

J.Hilk

@RuWex give us more information than "it does not work too", please.

RuWex

@J-Hilk , @jsulm
ok
I understand the problem
the function toLatin1() is used to string
and here, because it is line[i]- its just one char, so it wants me to convert from char to QByteArray....

RuWex

a little question...
I did it:

QString letter= (QString)line[i];
               mainwind->WriteSerial(letter.toLatin1());

there is better way to do it?

J.Hilk

@RuWex

    QSerialPort dev;
    char i{0x64};
    dev.write(&i, 1);
    dev.write(QByteArray::number(i));