Creates a RowColumn widget. Returns the widget name.
Options
-horizontal (CS)
Sets the orientation to horizontal.
-numColumnsinteger (CS)
Sets the number of columns of objects in a rowcolumn, checkbox,
or radiobox to integer.
-packing NONE | COLUMN | TIGHT (CS)
Sets how items contained in a RowColumn widget are packed.
NONE
No packing is performed. The x and y attributes
of each entry are left alone, and the column
widget attempts to become large enough to enclose
all entries.
COLUMN
All entries are placed in identically sized boxes.
The boxes are based on the largest height and width
values of all the children widgets. The value of
numColumns determines how many boxes are placed
in the major dimension, before extending in the
minor dimension.
TIGHT
Given the current orientation (horizontal or
vertical) entries are placed one after the other
until the RowColumn must wrap. A RowColumn will
wrap when there is no room left for a complete
child in that dimension. Wrapping occurs by
beginning a new row or column in the next available
space. Wrapping continues as often as necessary,
until all of the children are laid out. In the
vertical dimension (columns), the boxes are set to
the same width; in the horizontal dimension (rows)
the boxes are set to the same depth. Each entry's
position in the major dimension is left unaltered;
its position in the minor dimension is set to the
same value as the greatest entry in that particular
row or column. The position in the minor dimension
of any particular row or column is independent of
all other rows or columns.
-spacinginteger (CS)
Sets the spacing between objects inside a row column to integer.