Cube desktop changer in KDE 4

In GNOME on 11.1, I could hold down Ctrl - Alt and then drag with my mouse to “open” the cube.

Is there a similar mouse combo for KDE 4 on 11.2? I know of the Ctrl-F11 key, but since I switch windows with the mouse, I would always have to take my right hand off the mouse to hit the F11 key…? A mouse drag is way more intuitive to me…

“start menu” > Personal Settings > Desktop > Screen Edges.

Click one of the little cube things on the side and select the Desktop Cube - Cube option. Or perhaps just the ‘Switch desktop on edge’ option at the bottom in the same window… not sure, never use it since it greatly annoys me.