Variables in QML?

[eirnanG]

Can i declare a variable in QML??

....because I want to create a qml that can call other qml with a condition (like if else)
or i must do it in cpp?

thanks! :D

[bergo.torino]

No, you cannot. You have to export your variable from C++ layer down to the QML by using QDeclarativeContext::setContextProperty().

[baysmith]

Use properties. See http://developer.qt.nokia.com/doc/qt-4.7/propertybinding.html

[eirnanG]

i think i should start making my cpp..

@bergo thanks! i will study that code. :D
@bradley thanks for the link. =)

[mikhas]

You can also create a component and then use an instance of it:

@
SomeThing {
id: instanceOfSomeThing
}

...

instanceOfSomeThing.someProperty = someValue
@

someProperty can also be used in conditions.

[EDIT: code formatting, Volker]

[eirnanG]

@mikhas thanks! that code helps a lot :)

[AlterX]

You can also create a .js (shared o stateful) and use it.

[Alicemirror]

AlterX,

I think this is the best way to solve the problem. I am developing stuff in this direction and what is really helpful is js associated with the usage of the loader element.

You can create a QML document of the type
@
import "MyScript.js" as Script

Item {
id: myItem
...
Loader {
id: myLoader
[... set loader properties ...]
source: Script.getDocumentToLoad()
}
}
@
Then in the .js script you create the function like
@
function getDocumentToLoad() {

if(myTimeOfDay() > 12) {
    return "AfternoonWidget.qml"
else
    return "MorningWidget.qml"

}
@

Hope this can help you.

[AlterX]

@Alicemirror: Yes it is... ;-)