It is often beneficial to set several related components, such as buttons in modal dialogues to be the same size so they can be easily recognized as offering simliar functionality. You can also adjust the resizing behavior of components to ensire that component relationships are maintained at runtime.
To set components to the same size:
The IDE sets the selected components to be the same size and adds small graphical to indicate the component relationships.
To set component resizing behavior:
The IDE sets the components auto-resizing behavior to resize horizontally at runtime. The alignment guidelines and anchoring indicators are updated to indicate the new component relationships.