Creates a new Rebar object; can also be called as
PARENT->AddRebar(%OPTIONS). Class specific %OPTIONS are:
-bandborders => 0/1 (default 0)
display a border to separate bands.
-fixedorder => 0/1 (default 0)
band position cannot be swapped.
-imagelist => Win32::GUI::ImageList object
-varheight => 0/1 (default 1)
display bands using the minimum required height.
[TBD]
[TBD]
[TBD]
[TBD]
Sent when the height of the Rebar control has changed.