About X11's WM_HINTS.UrgencyHint and KF5's NET::DemandsAttention

Hello everyone,

I'm a LXQt contributor and I've been working on getting it rid of Xlib calls
by using KF5's WindowSystem (thank you very much fot that :) ).

The problem I'm having now is that I can't get the taskbar to indicate a
window needs attention by using the KWindowInfo class.

This is how it worked before:

XWMHints *hints = XGetWMHints(QX11Info::display(), _wid);
bool urgencyHint = hints->flags & UrgencyHint;

And that's how I've been trying:

KWindowInfo info(wid, NET::WMState | NET::XAWMState);
bool urgencyHint = info.hasState(NET::DemandsAttention);

Isn't NET::DemandsAttention supposed to read WM_HINTS? What am I missing?

Thanks in advance!

Paulo Lieuthier