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EZ(3)				EZWGL Functions				 EZ(3)

NAME
       EZ - introduction to EZWGL, the EZ widget and graphics library

SYNOPSIS
       The  EZ	widget	and graphics library (EZWGL) is	a C library written on
       top of Xlib. It is designed for developing graphics user	interface  un-
       der the X window	system programming environment.

DESCRIPTION
       EZWGL  consists of two parts, a	widget library and a graphics library.
       The widget library implements about a twenty or so commonly  used  wid-
       gets,  including	 button,  label,  frame,  entry, text-widget, listbox,
       slider, notebook, combox, menu,	file-selector,	list-tree,  work-area,
       spin-button,  gradient-bar, histogram, spread-sheet and 3D-canvas.  The
       widget library also implements a	drag-and-drop mechanism	and a resource
       management   scheme.    The   graphics  library	implements  about  100
       OpenGL(TM) like graphics	functions that provides	high level support for
       3D  graphics, including features	like zbuffer, double-buffer and	light-
       ing.

       An EZWGL	application consists of	following components.

	1. Include the one and only header file	"EZ.h"

	2. Initialize the library by calling EZ_Initialize

	3. Create widgets using	EZ_CreateWidget

	4. Register widget callbacks and event	handlers  using	 EZ_AddWidget-
	CallBack and EZ_AddEventHandler

	5. Map widgets by invoking EZ_DisplayWidget on your toplevel widgets

	6.  Processing	events	using  EZ_EventMainLoop	or EZ_ServiceEvents or
	EZ_WaitAndServiceNextEvent

       Here is a simple	example	that demonstrates these	steps.

       #include	"EZ.h"			   /* the header file	   */
       static  void doexit(EZ_Widget *w, void *d)
       {
	 EZ_Shutdown();
	 exit(0);
       }

       main(int	argc, char **argv)
       {
	 EZ_Widget *hello;

	 EZ_Initialize(argc,argv,0);	   /* initialize EZWGL	  */

		 /* create a button and	set its	foreground red	  */
	 hello = EZ_CreateWidget(EZ_WIDGET_NORMAL_BUTTON, NULL,
				 EZ_LABEL_STRING, "Hello World",
				 EZ_FOREGROUND,	  "red",
				 0);

	 EZ_AddWidgetCallBack(hello,	   /* register call back  */
	       EZ_CALLBACK, doexit, NULL, 0);

	 EZ_DisplayWidget(hello);	   /* show the button	  */

	 EZ_EventMainLoop();		   /* handle mouse inputs */
       }

SEE ALSO
       EZ_Initialize(3),  EZ_CreateWidget(3),  EZ_DisplayWidget(3),   EZ_Shut-
       down(3)

EZWGL									 EZ(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

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