If I try to bind the +ssg alias to either mwheelup or mwheeldown the alias doesn't work. I can bind it to any keyboard key no problem, but mousewheel causes problems. The result is that upon turning the wheel in the proper direction my weapon model switches to SSG and its firing animation appears, but the game fires a regular SG instead (I can tell because of the fire rate / sound / only 1 shell being subtracted from my ammo total / spread).

Additional info:

- I use windows 7
- I tried two different mice ("MS Intellimouse Explorer 3.0", as well as some random "Vesicare" mouse), and both gave the same negative result.

Has anyone encountered this and knows the solution?

How does your +/-ssg alias look like?

I can only guess but it might be related to the fact that using the mousewheel is usually comparable to dozens of button clicks in less than a second and the client might get confused of the amount of requests it must do as weapon scripts have more than one step. Try using other weapon scripts in the wheel and see if they bug as well.

Should work. I've used mousewheel to shoot since 2000 or something. Works in every client i've tested:
Here are the aliases i use with ezQuake:

Just a idea.

Try making +alias and -alias

Example

+ssg "impulse 3 2;+attack"
-ssg "impulse 2; -attack"
bind mwheelup "+ssg"

Those aliases worked Mushi - thanks! I wonder why the client executes those properly, but the default ones contained in nQuake seem flawed when used with mouse wheels.

I also thank everyone else who took their time to read my message and give their answers - thank you!

Unlike keypresses and button clicks, mouse wheel events don't have an on/off state and cannot be used for momentary actions.

Now it makes sense, thanks!