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.

class Grid
int left
int top
int width
int height


child Widget

the widget to add

left int

the column number to attach the left side of child to

top int

the row number to attach the top side of child to

width int

the number of columns that child will span

height int

the number of rows that child will span