Implements the calculation of a box sizer's dimensions and then sets
the size of its children (calling \helpref{wxWindow::SetSize}{wxwindowsetsize}
if the child is a window). It is used internally only and must not be called
-by the user. Documented for information.
+by the user (call Layout() if you want to resize). Documented for information.
\membersection{wxBoxSizer::CalcMin}\label{wxboxsizercalcmin}