Using Qt designer to set transparent background for qgis plugin dialog

[bemlun]

I'm studying Qt designer to create UI for Qgis plugin. I'm wondering how to set transparent background for the dialog. In the image below there's an example to understand what I have in my mind. I'd like a dialog with just the slider, with transparent background, and, if it's possible, without the title bar. Thank you all

[SGaist]

Hi and welcome to devnet,

You will have to write that in code. Set the Qt::FramelessWindowHint on your window flags. Since you are using python it will by Qt.FramelessWindowHint

You can play with the Widgets WindowFlags example.

As for transparency, you can set the Qt::WA_TranslucentBackground attribute.

@Denni-0 please refrain from answering with your hatred of Designer if you don't have anything related to the question to say.