the widget to add
the child of @grid that @child will be placed next to, or %NULL to place @child at the beginning or end
the side of @sibling that @child is positioned next to
the number of columns that @child will span
the number of rows that @child will span
Adds a widget to the grid.
The widget is placed next to @sibling, on the side determined by @side. When @sibling is %NULL, the widget is placed in row (for left or right placement) or column 0 (for top or bottom placement), at the end indicated by @side.
Attaching widgets labeled [1], [2], [3] with @sibling == %NULL and @side == %GTK_POS_LEFT yields a layout of [3][2][1].