mouse buttons - my view from X11 upwards into Qt

todd rme toddrme2178 at
Mon Feb 21 21:11:05 GMT 2011

On Sun, Feb 20, 2011 at 4:57 PM, Rick Stockton <
rickstockton at> wrote:

>  Within Qt, the Devs have recognized that Button8 and Button9 are
> frequently implemented "backwards". Thus they assigned the more cryptic
> names "XButton1" and "XButton2".

Are you sure about this?  I thought xbutton1 and xbutton2 where the
"buttons" for the x-axis, that is the scroll wheel.  In other words,
xbutton1 is scroll up and xbutton 2 is scroll down (or vice versus).

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