How to create a listbox with custom listbox items?
I need to create a (vertical) listbox of custom listbox items (a frame around 2 push buttons and a label). I'm having trouble doing this with QListWidget as it needs a QListWidget item, which itself can't draw my special grouping of UI widgets (2 buttons and a label). I ended up creating a sub-class of QListWidgetItem and have it also inherit from QFrame (because my UI is a frame with 2 buttons and a label inside it) so I can initialize my UI (via setupUI). However, QListWidget only offers ViewModes ListMode and Icon Mode, which I don't believe will work for my scenario.
Can anyone suggest a better way to setup a listbox with custom listbox items like I want? I tried to search through forums for something similar but didn't find it so apologies if there is an existing thread out there.
Would QML and a ListView be an acceptable solution?
Another alternative is a custom delegate with QListView.
Or how about a simple QVBoxLayout inside a QScrollArea?
Thanks for the suggestions, ZapB. I'm not familiar with QML so not sure if that is a good choice.
I'm reading up on the custom delegate with QListView method now. The alternative of a QVBoxLayout in a scroll area is more appealing because there's not much of a learning curve there but then I would have to implement my own listbox class.
Just to reiterate, I need to create a list box with custom list box items. The listbox items will consist of a frame around 2 push buttons and a label so I will need to override the input. There can be up to 256 of these items in a list box and users will be able to add, remove and select them freely. I'll probably need to incorporate a context menu for the "selected" item. Also, I will need to be able to support drag into these list box items.
So with the above info, do you know if there is a better choice between the last 2 options? Any unnecessary overhead with one vs the other, etc.?
If I go with the delegate solution, would QItemDelegate sub-class for the list box items be the way to go? What kind model do I setup - standard? Sorry, I'm not terribly familiar with how model/view system works (which is why the last suggestion was appealing).
Thanks again for your help.
For QML it depends on how much you want your items to match the system theme. QML is probably the easiest option but there are not yet pre-defined desktop components available. However, it is very easy to do and to add animations etc. It also comes with support for current item highlighting etc.
If QML is a no-go for you then I would go for the custom delegate approach I think since 256 is quite a lot of widgets to display at once. Using a delegate, the QListView will handle creation and deletion of the delegates for you.
To see how ot use your own delegate take a look at this "example":http://doc.qt.nokia.com/latest/itemviews-stardelegate.html. How you map your model onto the delegate is up to you but normally you would provide a different Role for each piece of data to be shown within a single delegate.
Thanks again, ZapB!