How to change drop-down background color on qcombobox hover?

Question

I need to change the drop-down button background of the QComboBox when the mouse hover on QComboBox.

I dont get how to do that?

If I wrote

QComboBox::drop-down:hover

it would be wrong because it is selector to hower ower drop-down button not ower QComboBox.

UPD: I mean about this button:

::drop-down - The drop-down button of a QComboBox.

ANSWER:

The desired behavior couldnt be reached via QSS. It needs to be implemented manually using events.

@eyllanesc, according to qt documentation drop-down button of the QComboBox - it is the button over which placed the down-arrow element. — AeroSun, Oct 12 '18 at 16:24
@Redanium, the main trouble is that I dont have idea how to receive access to the drop-down button from the QComboBox::hover{} — AeroSun, Oct 12 '18 at 16:25
@AeroSun You could show me an image where that element is pointed and maybe this way I can help you. — eyllanesc, Oct 12 '18 at 16:27
from `Qt` doc `QComboBox::drop-down:hover { image: url(dropdown_bright.png) }` — Redanium, Oct 12 '18 at 16:31
@Redanium, no I need other behavior. Your code change the drop-down when the mouse hover drop-down. But I need to change drop-down when the mouse hover QComboBox — AeroSun, Oct 12 '18 at 16:37
@AeroSun we call this `QComboBox::down-arrow` you want to change..so try this `QComboBox::down-arrow:hover{}` — Redanium, Oct 12 '18 at 16:38
@Redanium, the down-arrow is a separate element - it is the black triangle inside drop-down button on UPD post — AeroSun, Oct 12 '18 at 16:41

score 1 · Answer 1 · answered Oct 12 '18 at 16:10

1

Refer to QComboBox Styling

If I'm not misteken you should impelement your own method void QComboBox::mouseMoveEvent(QMouseEvent *event) when the mouse hovers the combobox we change its stylesheet QComboBox::StyleSheet

QComboBox{
 ...
 backround:red;
 ...
}

and after, when the mouse gets out of our combobox ,we reset the stylesheet to default.

QComboBox{
}

answered Oct 12 '18 at 16:10

Redanium

879
5
18

So just using styling I couldnt reach the desired behavior? – AeroSun Oct 12 '18 at 16:21
So I was right :) – Redanium Oct 12 '18 at 17:08

How to change drop-down background color on qcombobox hover?

1 Answers1