Partial text selection in QTreeView
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wrote on 4 Nov 2020, 11:45 last edited by
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
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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
wrote on 4 Nov 2020, 11:53 last edited by@Giert
QTreeViewhas a selectionBehaviour and a selectionMode. What do you mean byselect 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.
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@Giert
QTreeViewhas a selectionBehaviour and a selectionMode. What do you mean byselect 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.
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wrote on 4 Nov 2020, 12:23 last edited by@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.
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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 ?
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wrote on 5 Nov 2020, 02:43 last edited by Bonnie 11 May 2020, 03:03
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. -
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.wrote on 5 Nov 2020, 08:16 last edited by@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!
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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 ?
5/7