Class wheel_event

Boost C++ Libraries

Class wheel_event

boost::ui::wheel_event — Mouse wheel event class.

Synopsis

// In header: <boost/ui/event.hpp>


class wheel_event : public boost::ui::mouse_event {
public:
  // construct/copy/destruct
  wheel_event();

  // public member functions
  bool horizontal() const;
  bool vertical() const;
  coord_type delta_x() const;
  coord_type delta_y() const;
};

Description

See Also:

Scroll wheel (Wikipedia)

`wheel_event` public construct/copy/destruct

```
wheel_event();
```

`wheel_event` public member functions

```
bool horizontal() const;
```
Returns true only if wheel move is horizontal.
```
bool vertical() const;
```
Returns true only if wheel move is vertical.
```
coord_type delta_x() const;
```
Returns wheel horizontal move delta.
```
coord_type delta_y() const;
```
Returns wheel vertical move delta.