How to use Q_FLAGS with bitwise operations in QML?

[Clever&Smart]

Hello,

I have to expose a Q_FLAGS to qml and I would like to use it with bitwise operations e.g.:

//Some.qml
 
if(result.directions & FlickResult.LEFT)
{
   slider.value-=0.5
}
 
if(result.directions & FlickResult.RIGHT)
{
   slider.value+=0.5
}

//Some.qml

if(result.directions & FlickResult.LEFT)
{
   slider.value-=0.5
}

if(result.directions & FlickResult.RIGHT)
{
   slider.value+=0.5
}

To copy to clipboard, switch view to plain text mode 

On C++ side everything is fine but on QML side I just receive a QVariant(Flick:irections)) as value for "result.directions". It seems that the encapsulated value cannot be used with bitwise operations.

Does anyone how Q_FLAGS can be used with bitwise operations in QML?

---

Added after 1 34 minutes:

I have found a workaround for my problem.

Instead of trying to expose the Q_Flag type I exposed an integer instead.
I converted the q_flag to int like this

int FlickGestureResult::getDirections() const
{
    return int(m_gestureDirections);
}

int FlickGestureResult::getDirections() const
{
    return int(m_gestureDirections);
}

To copy to clipboard, switch view to plain text mode 

[Clever&Smart]

Finally I got it

The problem was caused by my enum declaration and a mixed up macro usage:

enum class GestureState
{
  NoGesture,
  GestureStarted,
  GestureUpdated,
  GestureFinished,
};
Q_ENUMS(GestureState)//mixed up, has to be Q_ENUM (without s) for Qt >= 5.5

enum class GestureState
{
  NoGesture,
  GestureStarted,
  GestureUpdated,
  GestureFinished,
};
Q_ENUMS(GestureState)//mixed up, has to be Q_ENUM (without s) for Qt >= 5.5

To copy to clipboard, switch view to plain text mode 

typedef enum
{
  NoGesture,
  GestureStarted,
  GestureUpdated,
  GestureFinished,
}GestureState;
Q_ENUMS(GestureState) //ok with this enum and Qt <5.5

typedef enum
{
  NoGesture,
  GestureStarted,
  GestureUpdated,
  GestureFinished,
}GestureState;
Q_ENUMS(GestureState) //ok with this enum and Qt <5.5

To copy to clipboard, switch view to plain text mode 

[anda_skoa]

The second should be ok for all Qt5, the difference to the above is that this is a classic enum and the other is a C++11 enum class.

Cheers,
_