This is question for those who already tried Cascades for Blackberry. Can you use standard QML items, like?
Rectangle {
anchors.fill: parent
color: "lightblue"
}
I fail to run this code on a BB10 simulator.
You can't do that with Cascades because it does not use Qt QML. Instead, if you want to completely avoid Cascades, you can use Qt for Playbook wich lets you use Qt QML.
If you choose that your application won't look like the rest of native apps on BB10 though.