[solved] Combobox UserRole ?
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How can i get the enum values of Parity ?
I expect to get 0, 2 and 3
Problem is, i do not understand the USerrole stuff.@ ui->cb_test->addItem("NO", QSerialPort::NoParity);
ui->cb_test->addItem("EVEN", QSerialPort::EvenParity);
ui->cb_test->addItem("ODD", QSerialPort::OddParity);@@void MainWindow::on_cb_test_currentIndexChanged(int index)
{
qDebug() << index;
qDebug() << ui->cb_test->itemData(index, 0);
}@thank you
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Hi,
@qDebug() << ui->cb_test->itemData(index, 0);@
You are using the wrong role here. By default itemData gets the data from Qt::UserRole so what you put in using addItem. Here you are requesting the data from Qt::DisplayRole
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do you have a suggestion how i can solve my problem ?
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@qDebug() << ui->cb_test->itemData(index);@
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the output of the above is:
@QVariant(int, 0)
QVariant(int, 2)
QVariant(int, 3) @I want to use this combobox to set QSerialPort parity:
@myQSerielPort->setParity(ui->cb_test->itemData(index); @
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And that's the correct output.
If you want to retrieve the value you have to convert the QVariant back to your enum
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Ahhhhh :), OK thank you
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You're welcome,
Since you have everything working now, please update the thread title prepending [solved] so other forum users may know a solution has been found :)
