Control

Main Loop

xpGUI is an event-oriented interface system, that uses an event loop "waiting" for the user to interact with the application.
For this loop to occur, the application must call the gMainLoop() routine, which is actually a null-op under pwa/p2js, since that relies on the browser’s event loop. The event loop goes idle properly, rather than needlessly chewing up 100% CPU time.

The following routines are used to control startup, shutdown, and everything inbetween:

gShow	Displays a dialog [in a specified position] on the screen.
gHide	Hides an interface element/dialog.
gMap	(optional) Creates (maps) the native interface objects corresponding to the given (abstract) xpGUI interface elements.
gRedraw	Redraw and/or update the size and layout of all controls in the same dialog.
gSetFocus, gGetFocus	Set keyboard focus to a specified interface element. Find out which control has said focus.
gMainLoop	Start the main event processing loop/user interaction
gClipboard	Creates an element that allows access to the clipboard.
gTimer	Creates a timer