Deciding the height of a rectangle

[Circuits]

I am working on this virtual keyboard panel (background rectangle basically) and the height is set to:

styleKeyboardPanel.keyHeight * 4 + styleKeyboardPanel.keySpacing * 3 + styleKeyboardPanel.padding 

I am not sure how to get it to just fill the whole screen. I could add 500 to that and it fills the screen but I feel like there is probably a keyword for what I want. If the question is too vague let me know and I can post some code.

[jsulm]

@Circuits I'm not sure I understand your question.
But you can use https://doc.qt.io/qt-5/qguiapplication.html#screens to get the list of available screens and then https://doc.qt.io/qt-5/qscreen.html to get the size of the screen.

[Circuits]

That's okay, turns out that the functionality I thought I was looking actually isn't going to work, thanks anyway!