ScreenShot with Qt using Rocky Linux 9

RezaA

Hi all,
I have an application on Linux.
I make a screenshot as follows :

QScreen *screen = QGuiApplication::primaryScreen();
QPixmap pixmap = screen->grabWindow(0);
bool result = pixmap.save("sc,"PNG");

This works correctly when I use CentOS-7 but when using Rocky Linux 9, I have a black screenshot.
Is there anyway to resolve this problem ?

Thanks in advance !

SGaist

Hi and welcome to devnet,

Which desktop environment are you using ?
With which window manager ?