Explorer style tree views on Vista

Published Wednesday May 30th, 2007
4 Comments on Explorer style tree views on Vista
Posted in Qt, Uncategorized

vista delegate

Vista introduced a new optional “Explorer” style for some of its item views. While Qt 4.3.0 uses this style for its item view classes, the selection background of the the delegate itself still retains the appearance from XP since it is not currently decorated by the style. While we consider revising this for a future version of Qt, it is in fact already possible to get the themed selection backgrounds by using the following custom delegate as shown in our modified dirview example above. The image below shows the same application without row selection and a single column.


single column tree

A few notes about this delegate:
– It requires the Vista SDK and must be linked against gdi32.lib, but it should not have extra runtime dependencies.
– On platforms other than Windows Vista the standard item delegate decorations are used.
– It is primarily designed for tree views, but can be used with other views as well.
– Hover appearance is currently disabled when row selection is used since it would require some extra updates from the widget.

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Posted in Qt, Uncategorized


Chris B says:

Both links go to vistadelegate.h.

Jens says:

Thanks. Corrected now.

AlKu says:

Wow, that’s awesome! Thank you.
I’d probably now start to dig the Doc to find a way to provide the Hover feature, so I better ask before I start to write 1000 lines for this – does it require alot of work (for me) to implement the hover feature? If so (or not), can you point me to the right direction?

AlKu says:

Oh, never mind. I just noticed that tree views do get hover effects and that’s all I need for now πŸ™‚ Though your code should also maybe check if QWindowsVistaStyle is used so that it doesn’t interfere with custom styles or the other styles… just a thought πŸ™‚

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