Class/Name of this control

Hey,

A basic question.

(See the attached image) What is the name of the vertical bar control (with two other child windows either side) that allows the user to resize both windows by clicking and draging. Quite a common control but the best name I can find is "Split Plane" for Internet Explorer.

I have the feeling I will have to code my own version, as it doesn't appear to be a common/windows control (and maybe there will be someone else's source somewhere on the net).

Cheers

Splitters are not controls. There is an example of jow to code a splitter in MSDN's "Scribble" demo project.