I sat down today to teach someone QML and it didn't work as expected. I'm on
Linux usually, this person was on Windows 8, using a 32 bit Mingw. I'm pretty
confident in my QML abilities, now with mobile apps on both App stores, and
many other utilities not published.
At issue is the simple property of using ids. When using parent, it works, but
anything using the id ("something" in this example) fails.
We tried ApplicationWindow, Window, Rectangle as the root element. When using
the Window, we get "Unable to assign QQuickWindowQmlImpl to QQuickItem". In all
other root elements it fails silently.
Am I losing my mind? Code below -
import QtQuick 2.4
import QtQuick.Controls 1.3
import QtQuick.Window 2.2
import QtQuick.Dialogs 1.2
Window {
id: something
width: 500;
height: 200
color: "lightgray"
visible: true
Text {
id: helloText
text: "Hello world!"
y: 30
anchors.horizontalCenter: something.horizontalCenter // won't be
horizontally centered unless "parent"
font.pointSize: 24;
font.bold: true
Rectangle{
anchors.fill:something // won't appeat unless "parent"
color:"red"
}
}
}
-----
Starting
C:\Projects\build-Tutorial-Desktop_Qt_5_4_1_MinGW_32bit-Debug\debug\Tutorial.exe...
QML debugging is enabled. Only use this in a safe environment.
qrc:/main.qml:21:26: Unable to assign QQuickWindowQmlImpl to QQuickItem
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