Window open after host dies

[mottosso]

The QML window shouldn't remain open when the currently active host stops sending heartbeats.

[BigRoy]

This is likely resolved since 1.0.0 release. If not maybe we need to elaborate the problem some more.

[mottosso]

It's only resolved in Maya, so far.

Odds are we'll have to implement a similar mechanism for other hosts, which is to put in a callback that quits QML on host exit. In Maya, this has been implemented as a scriptJob. Nuke and others may have a similar feature.

[BigRoy]

For Qt based hosts could we connect it to the aboutToQuit signal of the host Application?

http://doc.qt.io/qt-5/qcoreapplication.html#aboutToQuit

from Qt import QtWidgets

def on_application_quit():
    try:
        _state["currentServer"].popen.kill()

    except KeyError:
        # No server started
        pass

    except OSError:
        # Already dead
        pass

QtWidgets.QApplication.instance().aboutToQuit.connect(on_application_quit)

Just tested this in Maya. This is a working replacement for the scriptjob method.

[mottosso]

That's a good idea!