Assign kwin shortcut to mouse button

[jtourville]

I really like the expose-like desktop effect in kwin called "Present Windows". Does anyone know if it is possible to assign that function to a mouse button? I can see where to give it a new shortcut key, or even a screen corner, but not a mouse button. Thanks!

[warnec]

I heard it is going to be present in KDE 4.3, but I'm not sure. I'll check it when stable final version is available ;)