Why do you always explicitly print to STDOUT? That's unnecessary unless you've used select to change the default output filehandle.

You need to re-read the sugggest that you were given. "action" is a parameter to your CGI program. Therefore you should have this:

print STDOUT "<IMG SRC=\"show_pic.cgi?action=showImage\">";

[download]
or (more idiomatically) 
print qq(<IMG SRC="show_pic.cgi?action=showImage">);

[download]
Then within show_pic.cgi you can check for the value of the "action" parameter and take appropriate action (i.e. returning either the HTML page or the image).

--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re: Re: Re: Content-type: html and images ? by davorg
in thread Content-type: html and images ? by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.