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.
the widget to add
the column number to attach the left side of child to
the row number to attach the top side of child to
the number of columns that child will span
the number of rows that child will span
See Implementation
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.