WIDGET_BASE: Create a base widget container for other widgets.
WIDGET_BROWSER: Create a web browser widget.
WIDGET_BUTTON: Create a button widget.
WIDGET_COMBOBOX: Create an editable droplist widget.
WIDGET_CONTROL: Realize, manage, and destroy widgets.
WIDGET_DISPLAYCONTEXTMENU: Display a context-sensitive menu.
WIDGET_DRAW: Create a drawable widget.
WIDGET_DROPLIST: Create a droplist widget.
WIDGET_EVENT: Return events for the widget hierarchy.
WIDGET_INFO: Obtain information about widgets.
WIDGET_LABEL: Create a label widget.
WIDGET_LIST: Create a list widget.
WIDGET_PROPERTYSHEET: Create a property sheet widget.
WIDGET_SLIDER: Create a slider widget.
WIDGET_TAB: Create a tab widget.
WIDGET_TABLE: Create a table widget.
WIDGET_TEXT: Create a text widget.
WIDGET_TREE: Create a tree widget.
WIDGET_TREE_MOVE: Copy and move tree widget nodes.
WIDGET_WINDOW: Create a drawable graphics widget.
XMANAGER: The event loop manager for widgets.
XMNG_TMPL: Template for creating widgets.
XMTOOL: Displays tool for viewing XMANAGER widgets.
XREGISTERED: Return the registration status of a widget.