I'm building a Qt Gui application for monitoring data from serial port.I'm using qextserialport
library. Here's the problem I ran into.
void MainWindow::onDataAvailable()
{
QString data_ser,data_trimmed;
port->readLine(data_ser.data(),0);
data_trimmed = data_ser.trimmed();
ui->textEdit->append(data_trimmed);
}
readLine
method's first argument should be of type char*
.How to convert QChar*
returned by data_ser.data()
into char*
.I could have used std::string
instead of QString
but qt gui objects are better compatible with QString and I need the trimmed
method too.
Here's the error i'm getting :
no matching member function for call to 'readLine'. no known conversion from 'QChar *' to 'char *' for 1st argument.
How to solve this??
You can't, or at least you do not want to (of course in C++ you can cast QChar* to char* but that will not make it work). Just read data into QByteArray, then convert that to QString.