As we know,use
Ctrl+Alt+Left/Right arrow key combination can switch between 3D desktop workspaces.This tutorial shows how to do this using mouse middle-wheel which is more convenient.
First,make sure you have installed compiz fusion and enabled 3D desktop.
CompizConfig Settings Manager in
Desktop tab,and check
Then,click on it and go into its configuration window.Click buttons after
Move Prev.Enable them and set to Button 5 and Button 4
Now,move the cursor to desktop and try the mouse-middle-wheel.When you move the cursor in windows,mouse-middle-wheel still do the function that scrolling down/up the scroll-bar.