@@ -214,8 +214,6 @@ Gets the mouse-wheel motion delta, when handling mouse-wheel events EVENT_MOUSEW
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@@ -214,8 +214,6 @@ Gets the mouse-wheel motion delta, when handling mouse-wheel events EVENT_MOUSEW
.. ocv:function:: int getMouseWheelDelta(int flags)
.. ocv:function:: int getMouseWheelDelta(int flags)
.. ocv:cfunction:: CV_GET_WHEEL_DELTA(flags)
:param flags: The mouse callback flags parameter.
:param flags: The mouse callback flags parameter.
For regular mice with a scroll-wheel, delta will be a multiple of 120. The value 120 corresponds to a one notch rotation of the wheel or the threshold for action to be taken and one such action should occur for each delta.
For regular mice with a scroll-wheel, delta will be a multiple of 120. The value 120 corresponds to a one notch rotation of the wheel or the threshold for action to be taken and one such action should occur for each delta.
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@@ -224,6 +222,8 @@ Some high-precision mice with higher-resolution freely-rotating wheels may gener
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@@ -224,6 +222,8 @@ Some high-precision mice with higher-resolution freely-rotating wheels may gener
For EVENT_MOUSEWHEEL positive and negative values mean forward and backward scrolling, respectively.
For EVENT_MOUSEWHEEL positive and negative values mean forward and backward scrolling, respectively.
For EVENT_MOUSEHWHEEL, where available, positive and negative values mean right and left scrolling, respectively.
For EVENT_MOUSEHWHEEL, where available, positive and negative values mean right and left scrolling, respectively.
With the C API, the macro CV_GET_WHEEL_DELTA(flags) can be used alternatively.
.. note::
.. note::
Mouse-wheel events are currently supported only on Windows.
Mouse-wheel events are currently supported only on Windows.
