Newsgroups: comp.windows.x
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!umich!wsu-cs!pandora.cs.wayne.edu!lee
From: lee@pandora.cs.wayne.edu (Harrison Y. Lee)
Subject: Display image in X Window
Message-ID: <1991Mar23.002903.6900@cs.wayne.edu>
Sender: Harrison Lee 
Reply-To: lee@pandora.cs.wayne.edu (Harrison Y. Lee)
Organization: Wayne State University, Detroit
Distribution: usa
Date: Sat, 23 Mar 91 00:29:03 GMT


Hi  XWindow experts:

	I am new to X programming and I need to display an image on screen,
	I have to read from a file which contains a long string of gray
	values.  I declare "char pixel" to hold the value.  I then need
	to read those values from the file one pixel at a time and use
	(I think) XPutPixel to put them in my image.  So far, it just
	gives me bus error (core dumped) error, I use dbx to run the program
	and it terminated at the XPutPixel line, I am wondering if anybody
	can give me some instructions or procedures on the correct
	procedures to define the image, open the window on the screen and
	display those pixels inside the window.

	Thanks alot for any suggestion!!!