Joris Huizer wrote:
> Why not like > > > + SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, > &pulScrollLines, 0); > > + gcWheelDelta = GET_WHEEL_DELTA_WPARAM(wParam); > > + if (gcWheelDelta >= WHEEL_DELTA && pulScrollLines) > > + nPos += pulScrollLines * (-gcWheelDelta / WHEEL_DELTA) * 8; > > just seems simpler;
It doesn't work quite that way. GET_WHEEL_DELTA_WPARAM() can return both positive and negative numbers so the abs() is still essential.
It's a question of taste whether to put it on to:
gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
or on to:
nPos += pulScrollLines * (-gcWheelDelta / WHEEL_DELTA) * 8;
Me, I like the first one but I don't really care one way or the other.
- Hannu Valtonen [EMAIL PROTECTED]
