Widget Layout

Every widget consists of several graphical components. These can be divided into two large groups:

• Normal components

• Containers

The primary difference between containers and normal components is that containers may hold other components and containers inside them.

Each container has one or more panes in which child components may be placed. For example, a Panel container has a single pane that is always visible and has no decoration. A Tabbed Panel container may have any number of panes (tabs) containing child components. Every pane has a separate layout and may contain any number of child components or containers.

The basic component of a widget is its root panel. This component is a container for all other components of a widget. When a widget is running, its root panel occupies all available space within the widget's window.

Every pane in a container has its own layout of child components. There are two layout types:

• Grid Layout
• Absolute Layout

The layout may be changed by modifying Layout property of a pane.

If you want to create a resizeable widget, please use Grid Layout.

The constraints of a widget component define its position and size within its parent container. Constraints also define how components change size and position when the widget window is resized.

Every layout provides its own constraints for each widget component excluding root pane.

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