Indicate number of columns in a two dimensional group.
If you use this tag, the total number of children must
be dividable by the number of columns.
The children will be positioned in a two dimensional
array, e.g. allowing easy creation of button fields
(maybe for calculator).
The children of your group are always read line
When MUI layouts two-dimensional groups, it does
actually two layout calculations, one for the rows
and one the columns. Parameters like weights and
dimensions are handled this way:
- – the minimum width of a column/row is the maximum
minimum width of all objects in this column/row.
- – the maximum width of a column/row is the minimum
maximum width of all objects in this column/row.
- – the weight of a column/row is the sum of all
objects in this column/row.