Make an element look active when it loses focus

Flanagan

Hi, do you know how can I make an element look active when it loses focus?

I have a QTreeWidget and I need the selection to look blue even though I have gone to another application. My app has fusion style.

I tried to change stylesheet but the left triangle and the color... :

I'd rather do it differently.
Maybe it could somehow make the widget not lose focus, or at least make it appear not to lose focus?

mrjj

Hi
Its not possible to make it not lose focus when switching to another app.

Can i ask why its so important to you that your app does not follow the normal visual guidelines?
Its by design the selection color is grey when not having focus.

Flanagan

@mrjj

It is a program that I am going to use on a second screen while I have the focus on another app.

I am going to make the selection in the Qt app with global hotkeys while I am using another application and I wanted to see the selection in blue like when I use the app normally but of course, the app does not have the focus and it looks gray.

mrjj

Hi
Ok that way.
Well on Windows the fusion style seems not to use palette so the old trick

QPalette p = palette();
p.setColor(QPalette::Inactive, QPalette::Highlight, p.color(QPalette::Active, QPalette::Highlight));
setPalette(p);

Seems to have no effect.

I also tried with a QStyledItemDelegate but i cant tell where it get that blue
selection color from with Fusion as it it seems to ignore all palette.
https://code.woboq.org/qt5/qtbase/src/widgets/styles/qfusionstyle.cpp.html

So I think your best bet is the stylesheet even if not perfect.

Flanagan

@mrjj it worked!

I'm using PySide2

palette = self.palette()
palette.setColor(QtGui.QPalette.Inactive, QtGui.QPalette.Highlight, palette.color(QtGui.QPalette.Active, QtGui.QPalette.Highlight))
palette.setColor(QtGui.QPalette.Inactive, QtGui.QPalette.HighlightedText, palette.color(QtGui.QPalette.Active, tGui.QPalette.HighlightedText))
self.setPalette(palette)

Thanks!

mrjj

@Flanagan
Oh so on your platform, it did allow to color the inactive as active?
Cool. Thank for reporting back.

Ps. What platform ? linux or also windows ?

Flanagan

@mrjj Yep, I'm using Windows, it works even the other way, Active to Inactive

Video proof:
https://mega.nz/file/OlwCjKCZ#fcPYipywn2_XcOfV4Ai3zytRMz1f8InCiMNs4H5UcX8

mrjj

@Flanagan
Ok thats odd i could not get it to do it on win 10 . :)
Im using Qt 15.0
What version does this work in ?
In any case, im happy it still worked.

Flanagan

@mrjj I use Windows 10 and PySide2 5.15.
https://www.qt.io/blog/qt-for-python-5.15.0-is-out

xD it's odd that it doesn't work for you.

mrjj

@Flanagan
Yep, I assume i did something wrong then since you have same Qt version so should also work with c++ :)

Tried again and now it worked :)
Seems i was messing up something with a stylesheet.