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From: lee@pandora.cs.wayne.edu (Harrison Y. Lee)
Newsgroups: comp.windows.x,comp.sys.next
Subject: Re: X11R4 server for NeXT?  Pencom's?
Message-ID: <1991Mar8.001630.20831@cs.wayne.edu>
Date: 8 Mar 91 00:16:30 GMT
References: <1991Mar4.084733.5309@ircam.fr>
Sender: Harrison lee
Reply-To: lee@pandora.cs.wayne.edu (Harrison Y. Lee)
Followup-To: Harrison Lee
Organization: Wayne State University, Detroit
Lines: 19

Hi there,

	I am *very new* to X window programming and I need to have something done.

	I have a program called xloadimage which can display an image on the screen, now what
	I need to do is to either use an available program or write up my own program to clip
	a part of the image and save the pixel values into a file ( the pixel values will be
	the gray level value of the pixel).  The program will allow the user to click his mouse
	once on the upper left corner and lower right corner to define the region that he
	want to save, then the program will get the pixel values of the region and write them
	to a file.

	Does anyone knows if there is any program that can do this??

	If I need to write my own program, can someone give me some pointers in approaching
	this problem (like which functions to use, please bear with me 'cuase I am *very* new
	in X window programming).

	Thanks for any helps!!