How To return C++ Enum to QML?

[rhuang]

Hi there,

I have a use case

Class B : public QObject
{
Q_OBJECT
Q_ENUMS(Enum)
public :
enum Enum { }
}

Class A : public QObject
{
public :
B::Enum foo( );
}

on QML side:
var ret = a.foo( );
console.log(ret) // print out QVariant(B::Enum)
if ( ret == B.success ) // success is one of enum value; always failed if returned value is success.

But if I use Q_PROPERTY( B::Enum lastError READ lastError CONSTANT ); it works fine.

So my question is that Enum can't be return type of a method/a slot from C++ to QML?

[ommharidaas]

I guess you need to access Enum declared in your cpp code from yout QML code.

Q_ENUMS(Enum)
public :
enum Enum { }

you just had let know ur qml that u have such enum in your code.

But u ought to expose that type to the qml code.

Q_PROPERTY( B::Enum lastError READ lastError CONSTANT )

what you did maynot be the exact solution.
add below in your cpp code.

qmlRegisterType(const char * uri, int versionMajor, int versionMinor, const char * qmlName)

In your case
qmlRegisterType<Enum>("Enum", 1, 0, "Enum");

You should be able to directly access Enum::Whatever_value.

Check and let me know.