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mouse wheel

Started by aCeOfSpAdEs Jul 18, 2003 at 1:23 PM 2 replies 950+ views

Original Post

Jul 18, 2003 at 1:23 PM

does anyone know how I can read input from the wheel on my mouse? I have no problem with the buttons, but can''t find anything on the wheel. thanks ----------------------------------------- when all else fails... crack open a cold one.

Buster

Jul 18, 2003 at 1:26 PM

z-axis

aCeOfSpAdEs

Author

aCeOfSpAdEs

Jul 18, 2003 at 1:27 PM

ahhhh. i see.

thanks

-----------------------------------------

when all else fails...
crack open a cold one.

Namethatnobodyelsetook

118

Namethatnobodyelsetook

Jul 18, 2003 at 2:19 PM

When using the wheel and DInput, the delta per wheel turn is completely driver/vendor defined. There is no way to query what resolution it is, as far as I was able to tell.

What I do is memorize the smallest change I''ve seen and divide by that. For example, on my machine moving the wheel one click reports a delta of 64 or -64. I memorize "64". Now if someone changes by two clicks (128 or -128) that get converted to 2 or -2.

It''s a dirty hack in a way, but it''s a quick self calibration that does work.

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