Undo the setContextProperty

[gautam]

Can we undo the setContextProperty() operation ? I use setContextProperty to bind a particular property to the QML. I want to add a feature wherein I should be able to undo this binding "effect" dynamically ?

thanks.

[th.thielemann]

Within my team we talked about such a feature. If the Qt object is gone, the QML can try to access an invalid reference. It is the same as using a invalid pointer to an not existing object.
From my point of view it is not necessary to handle this situation.
What is your reason?

[dheerendra]

@CPP
Export2QML *obj = new Export2QML;
contxt->setContextProperty("abc",obj);
viewer.show();
contxt->setContextProperty("abc",NULL);@

@QML

        if (abc != null) {
        abc.display();
        }else {
            console.log("Object is null")
        }@