@remarks After using this constructor, you must create either one or two
subwindows with the splitter window as parent, and then
call one of Initialize(),
SplitVertically() and
SplitHorizontally() in order to set the
pane(s).
@remarks After using this constructor, you must create either one or two
subwindows with the splitter window as parent, and then
call one of Initialize(),
SplitVertically() and
SplitHorizontally() in order to set the
pane(s).