scrolling with second mouse wheel doesn't work

[Tomasz Kontusz]

Second mouse wheel seems to be ignored in KiCad.

Typically it scrolls horizontally, and that's what I expected from using it with shift (as first wheel scrolls vertically with shift).

[Dick Hollenbeck (dickelbeck)]

Someone, please check the wxWidgets documentation, see if it is even supported.
Tomasz, if you can find someone to make you a patch or you can do it yourself. I don't see any problem adding this patch. But since not many folks have such a mouse, it is not likely to get done without your efforts.

[Tomasz Kontusz (tomasz-kontusz)]

As for not many folks having a mouse like that: most touchpads support horizontal scrolling too :-)

But back to the problem:
It looks like wxWidgets 2.9 added support for 2-axis scroll wheels, with a slight change in API in 2.9.4 (see http://docs.wxwidgets.org/2.9.5/classwx_mouse_event.html#a6e455a3fa3708031d8571e42489d453e). I wrote a patch that uses this API if KiCad is compiled with wx >=2.9, that I tested with 2.9.5 and 2.8.12.

With GTK wxWidgets < 2.9 horizontal scrolling works, shift pressed or not - I guess it uses the scrollbar event if the mouse wheel one was not consumed.

[Povilas Kanapickas (p12)]

Dick, could you commit this patch? Are there any problems with it?

[Blair Bonnett (bcb)]

Tomasz's patch was committed a year and a half ago in r4505 [1].

However, the wxWidgets version check in it is dodgy meaning it will only be used for wxWidgets 2.9, not the 3.0 that is now the minimum version required for KiCad. I have fixed this up as part of some work removing pre-3.0 specific code; I have posted a patch to the mailing list which will hopefully be applied shortly.

[1] http://bazaar.launchpad.net/~kicad-product-committers/kicad/product/revision/4505

[Blair Bonnett (bcb)]

The wxWidgets version check has been fixed. I believe that this issue is now fixed as well.