[SOLVED] C# "Tag" equivalent for QT button

vincenzo.pappano

In C# I can populate a Tag field for a push button -- for instance the button text has a description and the button tag stores a modbus address. How can I achieve a similar result in QT? What is the recommended practice?

Christian Ehrlicher

You can add custom properties to your object: https://doc.qt.io/qt-5/properties.html#reading-and-writing-properties-with-the-meta-object-system

vincenzo.pappano

@Christian-Ehrlicher: Perfect!

Set value

QObject *object = ui->btnErrorCode;
object->setProperty("ModbusAddress", 3054);

Retrieve value in button handler

QObject *object = sender();
QVariant vAddress = object->property("ModbusAddress");
uint16_t address = vAddress.toUInt();

SGaist

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