How to apply qss to a custom class

[IknowQT]

We have created a usrCntrListWidget class that inherits from Qlistwidget.
I declared in qss to apply qss. The declaration is:

usrCntrListWidget
{
border: 4px solid #B8BCBF;
}

I declared this, but the style is not applied.

But

QListWidget
{
border: 4px solid #B8BCBF;
}

If declared as , the style is applied.

[Pl45m4]

@IknowQT said in How to apply qss to a custom class:

usrCntrListWidget
{
border: 4px solid #B8BCBF;
}

 QListWidget#usrCntrListWidget
{
 border: 4px solid #B8BCBF;
}

[Dan203]

QListWidget[objectName="usrCntrListWidget"]
{
    border: 4px solid #B8BCBF;
}

[IknowQT]

@Dan203

I ran the program after applying it to qss, but the style does not change.
But in qt designer style edit the style is applied.

[Dan203]

@IknowQT

Hmmm… I just used it yesterday and it worked. Only reason I replied is because I had literally just used it. I'm not a qss expert so I honestly don’t know why it didn’t work for you. 🤷‍♂️

[Pl45m4]

@IknowQT said in How to apply qss to a custom class:

usrCntrListWidget
{
border: 4px solid #B8BCBF;
}

 QListWidget#usrCntrListWidget
{
 border: 4px solid #B8BCBF;
}

[Dan203]

@Pl45m4

This is the better way to do it 👍

[JonB]

@IknowQT
You asked the same question and I gave you the answer in https://forum.qt.io/topic/134744/promote-the-main-widget-to-another-widget/2, which you ignored. Seems pointless answering, shame.