Partial text selection in QTreeView

[Giert]

I'm having difficulty allowing the user to select parts of the text in a QTreeView, and not have the selection confined to a single index. The default behavior of these item views is to select whole indexes.

I've tried to use a custom delegate with a QLabel as a persistent editor, which works well for individual indexes. Unfortunately I haven't been able to make selections work across multiple indexes.

This has been discussed before, but I couldn't find a clear solution.

Qt 4.8 on ancient hardware

[JonB]

@Giert
QTreeView has a selectionBehaviour and a selectionMode. What do you mean by

select parts of the text in a QTreeView, and not have the selection confined to a single index. The default behavior of these item views is to select whole indexes.

?

[Giert]

@JonB I want the user to be able to select the text itself, rather than the whole index. The goal is both selection of only parts of a longer text, and to be able to select parts of several indexes at once.

Kind of like any text editor or browser.

[SGaist]

Hi and welcome to devnet,

@Giert said in Partial text selection in QTreeView:

This has been discussed before, but I couldn't find a clear solution.

Can you link to these discussions ?

[Bonnie]

I was thinking of using a QLabel when I see this topic title, but apparently the OP has already done that.
I don't think there's more can be done.
AFAIK, you cannot select texts across multiple labels / widgets. They are not like elements in a webpage.
Once I was implementing a chat view, and my conclusion was, if I want to be able to select texts across multiple chat records, I cannot use item views, but html content based widgets, like QTextEdit / QWebView.

[Giert]

@Bonnie that's really unfortunate. There is a lot of keyword highlighting in the application, and the current implementation, QPlainTextEdit, runs into serious performance issues, even with a lowered text block limit. Thanks anyway!

[Giert]

@SGaist of course!

This OP gave up, as I'm about to do

while this discussion gave me hope of handling mouse events in the view myself

This discussion didn't really go anywhere at all