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From: elee6i5@jetson.uh.edu
Newsgroups: comp.windows.x
Subject: Yet another Help - Displaying image!!
Message-ID: <6887.26e6dc5e@jetson.uh.edu>
Date: 7 Sep 90 04:31:41 GMT
Organization: University of Houston
Lines: 31


I am trying to display an image file consisting of 256X256 
bytes of binary values. The display has a depth of 4 and I have 
allocated private color cells for 16 colors .(Since the display 
depth is 4, I guess it can display only 16 levels of gray).
What values should I store in the red, blue and green fields 
of the array of XColor structure before calling XStoreColors
in order to store appropriate primary color components 
corresponding to 16 levels of gray.

When I try to display the image( ZPixmap pointing to my data)
on the window
calling XPutImage on "exposure", I get the following
error message:

X Protocol error detected by server: parameter mismatch
  Failed request major op code 72 X_PutImage
  Failed request minor op code 0 (if applicable)
  ResourceID 0x500003 in failed request (if applicable)
  Serial number of failed request 11
  Current serial number in output stream 11

What could be the reason?

Please mail your opinion ...

Thanks in advance,

.sundar
elee6i5@jane.uh.edu
sundar@izmir.ee.uh.edu