[Interest] Accessing existing enums from QML

[Kristoffersen, Even (NO14)]

>Subject: [Interest] Accessing existing enums from QML
>
>Hi,
>my C++ code makes heavy use of quite simple enums which are defined in some namespace, outside of any class >(and therefore also outside of any class which derives from QObject). It's done like this:
>
>  namespace Imap {
>    typedef enum { FLAG_ADD, FLAG_REMOVE } FlagsOperation;
>  }

You can add a wrapper class for the enum inside the namespace for your Qt C++/QML code, non-Qt C++ won't change:

namespace Imap
{
#ifdef QT_VERSION
	#include <QObject>
	class ImplementDirectExpositionOfEnumsToQmlPrettyPlease : public QObject
	{
	    Q_OBJECT
	    Q_ENUMS(FlagsOperation)
	public:
	    explicit ImplementDirectExpositionOfEnumsToQmlPrettyPlease(QObject* parent = 0) : QObject(parent) { }
#endif

	    typedef enum { FLAG_ADD, FLAG_REMOVE } FlagsOperation;

#ifdef QT_VERSION
	}
#endif
}

(choose a handy class name that is short, but easy to search & replace when the work-around is no longer needed)
It's not the prettiest solution, but it will get you by until there is support for non-qobject enums exposed to QML.


-Even