virtual ZRESULT mouseWheel( core::IProcParams* pProcParams, 
                            DWORD nFlags, 
                            short zDelta, 
                            DWORD& nRetFlags);

Description

Mouse wheel scrolling event handler for an interactive tool.

The event handler is supplied with argument nFlags that specify which mouse buttons are pressed (if any). A ret-val argument nRetFlags can be used to indicate whether viewport(s) need to be updated and/or redrawn.

Parameters:

pProcParams

Procedure parameters to act on.

nFlags

Bitwise-or combination of MK_LBUTTON/MK_CONTROL/MK_SHIFT and so on values which indicate input flags at the moment of mouse movement.

zDelta

Wheel scroll signed offset value.

nRetFlags

Optional ret-val arguent that can be filled with some ZRESULT_* bits to force view redrawing.

See Also:

Interface overview and methods

mouseMove method