doforumda, Qt 4.7 is part of Maemo 5 PR 1.3, so it makes life easier. However, I don’t remember if the package qt4-declarative-qmlviewer is installed by default, so you may need to install it.

Then, to pure QML apps, you need to run in the terminal:
qmlviewer helloworld.qml

what does it mean pure QML apps?

You actually don’t need to run on terminal. You can use the qml viewer to open a qml file.

note: “pure qml” means a project that only contains qml and javascript files – no c++ application around it.

So i have to install Qt 4.7 on N900 to run QML apps??

If you have PR1.3 you are good to go. You just need to install the qmlviewer application.

how would i know that i have PR1.3?

doforumda wrote:

how would i know that i have PR1.3?

Go to Application Menu -> Settings -> About Product. Check if the version is 20.2010-36-2.

my version is 10.2010.19-1

You need update. See this [tablets-dev.nokia.com] link.