Qt Toolkit - group index

# Geometry Management

These classes provide automatic geometry management of widgets.

Classes:

- QBoxLayout (Lines up child widgets horizontally or vertically)
- QGManager (One-dimensional geometry management)
- QGridLayout (Lays out child widgets in a grid)
- QHBoxLayout (Lines up child widgets horizontally)
- QLayout (The base class of geometry specifiers)
- QVBoxLayout (Lines up child widgets vertically)