Adds a widget to the grid.
The position of child
is determined by left
and top
. The number of 'cells' that child
will occupy is determined by width
and height
.
this | |
child |
the Actor to add |
left |
the column number to attach the left side of |
top |
the row number to attach the top side of |
width |
the number of columns that |
height |
the number of rows that |