Spacer is a blank, non-interactive item that has a minimum size you can set. The minimum width is useful for allocating flexible amounts of space between Item s within the same row of a Form. The minimum height is useful for enforcing a particular minimum height of a row. The application can set the minimum width or height to any non-negative value. The implementation may enforce implementation-defined maximum values for the minimum width and height.
For more information about Spacer see: