qDesktopWidget.primaryScreen() doesn't exist

[Irwin Rodriguez]

Hi, I was using the trick below to center a window but got an error that says: Calling Method without definition !: primaryscreen

 

I'm looking at the source code and realized the method primaryScreen actually belongs to QGuiApplication which inherits from QCoreApplication which inherits from QObject but QDesktopWidget isn't part of that inheritance chain because it comes from qWidget and that's why Ring is complaining with.

Is there any alternative to center the window?

thanks!

[Mahmoud Fayed]

Hello Irwin

See this example: https://github.com/ring-lang/ring/blob/master/samples/AQuickStart/GUILib/gui44.ring

Greetings,

Mahmoud

[Ilir Liburn]

Hello Irwin,

look under ring/documents/booksLibraryController.ring how to center the window.

You can see how PrimaryScreen was replaced also here

https://github.com/ring-lang/ring/commit/c4f275cc7e97982289b720902b7189250ebe9dea

Greetings,
Ilir

On 3/21/23, Irwin Rodriguez <rodrigu...@gmail.com> wrote:
> Hi, I was using the trick below to center a window but got an error that

> says: *Calling Method without definition !: primaryscreen*
>
> [image: image.png]
>
> I'm looking at the source code and realized the method *primaryScreen
> *actually
> belongs to* QGuiApplication* which inherits from *QCoreApplication* which
> inherits from *QObject *but *QDesktopWidget *isn't part of that inheritance
> chain because it comes from *qWidget *and that's why Ring is complaining

> with.
>
> Is there any alternative to center the window?
>
> thanks!
>

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