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[SOLVED] QComboBox with QIntValidator - better workaround
When working with the QSerialPort Terminal example,I encountered a QComboBox with a "Custom" option - allowing the user to insert custom values checked by a validator:
In short, the combo box includes a Custom item and when that is selected (checked every time currentIndexChanged signal is emitted), the lineEdit is cleared and the validator is set.
However, there's a problem here. If after selecting Custom (which triggers the code that clears the lineEdit) I were to reselect Custom, the "Custom" value will be copied to the lineEdit and the validator stops working. This means that I can enter any incorrect string after that.
That second selection doesn't cause another currentIndexChanged signal, which makes sense since we didn't really change the selected index. I considered removing the Custom option from the combo when in combo box, but that DOES emit the index changed signal and creates a bigger mess as the first item is then selected by default.
I was wondering if there's a nice "complete" workaround for this Custom value scenario as the version in that sample obviously has this bug.
Anyone got any tips for this?
Saugglocke last edited by
simply switching from currentIndexChanged to activated should do the trick:
@ connect(ui->baudRateBox, SIGNAL(activated(int)),
Thank you very much, Saugglocke - this solved my issue!