Possible to have permanent, unselectable first item in QComboBox?

Qt_User72653

A look over the documentation came up with nothing, but, I'm looking for a way to basically have a 'title' for the a QComboBox that will always show, even when another value is selected. I'm essentially using it as a drop-down list of buttons so as soon as an item is clicked on it will send a signal, so the first index should never change.

I could implement this with event filtering and so on but if there's a simpler way, that'd be great.

J.Hilk

@Qt_User72653
There are a couple of ways to do that, I'll list those who come to my mind:

Use a QPushButton and give it a menu (QPushButton::setMenu(QMenu* menu)) of QActions instead
Set the ComboBox as editable, make the lineedit part read only and use setText
Subclass QComboBox and overwrite the PaintEvent
Subclass QComboBox and change the behaviour any other way than with the paintevent

jsulm

@Qt_User72653 Why do you want a "title" inside the combobox?
Isn't it quite confusing for the user if he/she selects a value, but instead of that value this "title" is shown?
I as user would think that it is simply not working.

Qt_User72653

@J.Hilk Thanks, I'll try these out.

VRonin

I'll add: Use a model (like QStandardItemModel) via QComboBox::setModel and make sure the flag() method of the model returns Qt::NoItemFlags for the first item

Qt_User72653

@jsulm It's not really the selected or clicked value that's important, because clicking on one of the items is going to open up a new window. It's basically a drop-down box of buttons, with the item displayed in the combobox being the header for the list of buttons.

Actually, now that I've reviewed it, a QPushButton with a menu is exactly what I need.

JonB

@VRonin said in Possible to have permanent, unselectable first item in QComboBox?:

I'll add: Use a model (like QStandardItemModel) via QComboBox::setModel and make sure the flag() method of the model returns Qt::NoItemFlags for the first item

Often a combobox starts with a first item like "Pick one of the following". Presumably this would be just the right/easy way to implement that?