Ribbon for WinForms | ComponentOne
C1.Util.Win Namespace / Win32 Class / GET_WHEEL_DELTA_WPARAM Method
The value to be converted.

In This Topic
    GET_WHEEL_DELTA_WPARAM Method (Win32)
    In This Topic
    Retrieves the wheel-delta value from the specified WPARAM value.
    Syntax
    'Declaration
 

    Public Shared Function GET_WHEEL_DELTA_WPARAM( _
   ByVal wParam As IntPtr _
) As Integer
    public static int GET_WHEEL_DELTA_WPARAM( 
   IntPtr wParam
)

    Parameters

    wParam
    The value to be converted.

    Return Value

    The return value is the high-order word representing the wheel-delta value. It indicates the distance that the wheel is rotated, expressed in multiples or divisions of WHEEL_DELTA, which is 120. A positive value indicates that the wheel was rotated forward, away from the user; a negative value indicates that the wheel was rotated backward, toward the user.
    Remarks
    Use: WM_MOUSEWHEEL - zDelta
    See Also

    Reference

    Win32 Class
    Win32 Members