QTreeView remove decoration/expand button for all items

Question

I want to have my QTreeView always expanded all of the items. In that case, all expand button / decoration are unnecessary and I want get rid of them. How can I delete all of them? setRootIsDecorated will only delete that buttons on first level...

score 20 · Accepted Answer · answered Apr 15 '13 at 15:41

20

This is what I've done in the past for this problem, it's a bit of a hack but it's worked pretty well. In this case none.png doesn't exist.

treeView->setStyleSheet( "QTreeView::branch {  border-image: url(none.png); }" );

answered Apr 15 '13 at 15:41

Chris

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please tell me where I can look up the names of these style sheets, like how did you find out that this decoration thing is called QTreeView::branch? I want to find out what other things' names are, too. – Pavel Nov 01 '16 at 08:53
@Pavel Late but for other readers: https://doc.qt.io/qt-5/stylesheet-reference.html – Tilman Vogel Jan 05 '22 at 11:35

score 8 · Answer 2 · answered Apr 10 '17 at 02:53

8

See https://forum.qt.io/topic/4767/how-to-get-rid-of-expande-collapse-qtreewidgetitem-indicator

This got rid of the top level ones for me: self.setRootIsDecorated(False).

I didn't try the item polocy mentioned so I'm not sure this answer can be considered complete. If anyone can verify, feel free to edit this with the confirmation. Until then consider this answer an info-share.

answered Apr 10 '17 at 02:53

Rafe

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Worked like a charm for me. – Elad Weiss Apr 17 '18 at 08:56

QTreeView remove decoration/expand button for all items

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