Declaring Variable

[eirnanG]

how to declare an Int or String in CPP or Header File that can be use and display in QML?

MOved to Qt Quick, as it's no C++ prtoblem, more a Qt Quick problem, Gerolf

[koahnig]

You can declare int and string in c++ like this:
@
#include <string>
void foo ()
{
int i;
std :: string str;
...
}
@

[eirnanG]

hw cn i use or call that in qml..

[Eddy]

If you use the qml tag on the right, you get a lot of info from devnet.
This one can interest you:
http://developer.qt.nokia.com/doc/qt-4.7/qdeclarativemodels.html

[eirnanG]

aside from using List.. is there any function that i can use?

[Eddy]

"Here is a tutorial that uses a string :":http://developer.qt.nokia.com/wiki/Introduction_to_Qt_Quick_for_Cpp_developers#2bbc678dfb658d1ac1f900544fdfd9d8

You can use a similar approch using int.

What is it that you don't understand exactly?

[Chuck Gao]

You can also have a look at the basic type in QML :-)

[changsheng230]

The key is

1. declare your Int or QString like the following :
   @
   class Foo : public QObject
   {
   Q_OBJECT
   public:
   Q_PROPERTY(int myInt READ myInt WRITE setMyInt)
   Q_PROPERTY(int myString READ myString WRITE setMyString)
   };
   @

2. Expose your C++ Object to QML :
   @
   int main(int argc, char *argv[])
   {
   QApplication app(argc, argv);
   QDeclarativeView view;
   Foo foobar;
   view.rootContext()->setContextProperty("myObject", &foobar;);
   view.setSource(QUrl::fromLocalFile("passInt.qml"));
   view.show();
   return app.exec();
   }
   @

3. Use Exposed Int or String in QML:

@
Item {
width: myObject.myInt
height: myObject.myInt *2
}
@

[mlong]

For completeness, you probably want to use the NOTIFY signal in your Q_PROPERTY declarations.

@
public:
Q_PROPERTY(int myInt READ myInt WRITE setMyInt NOTIFY myIntChanged)
Q_PROPERTY(int myString READ myString WRITE setMyString NOTIFY myStringChanged)
@

And be sure to emit myIntChanged(value) in setMyInt(), etc.

[eirnanG]

@all thanks for your replies.. ill try it asap when i got home... thanks again..