CSliderCtl and Arrow Keys?

[Ken Goguen]

Is there an easy way to have the CSliderCtl behave the same way when you use the arrow keys as it does when you click/drag it with the mouse? It moves the slider up and down, but how do I trap the message, the CSliderCtl only sends NM_OUTOFMEMORY, NM_RELEASEDCAPTURE, and NM_CUSTOMDRAW. I want the arrow keys to perform the same tasks I do when I handle the M_RELEASEDCAPTURE message. Ken Goguen

[Joaquin M Lopez Munoz]

I haven't tried this myself, but I think it should work:

1. Derive CMySliderCtrl from CSliderCtrl.
2. add a member variable int m_pos and handlers for WM_KEYDOWN and WM_KEYUP.
3. in OnKeyDown, store the current position in m_pos. In OnKeyUp, compare the position with the one you stored. If they're different, issue the appropriate NM_RELEASEDCAPTURE with WM_NOTIFY. Check for repeat counts (holding the key pressed) in OnKeyDown for improved results.

Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

[Ken Goguen]

Seems to work well. Thanks, -kg Ken Goguen