Some more info: In addition to attempting the "inline" XPM code, I also tried creating XPM file. After few format errors I got it to load but the result was the same blank (gray) square. I also attempted PBM file (tried P1 and P4). The P1 file loaded without errors but resulted in the same blank (gray) square. Attempt to create and load P4 file resulted in format error. I also created a JPG file from the PNG file, it too loaded without errors but resulted in the same blank square. I think that in all cases where I didn't have format errors, the PerlTk could read the image correctly and produce it's own internal image data correctly but somewhere "at higher authority", somewhere "under the hood" of EL8+GNOME3 the application image had been overriden by the OS and the GNOME3. Can it be the case? TIA!

In reply to Re^3: PerlTk GNOME3 alternate icon file shown as blank square by kaza_perl_ip
in thread PerlTk GNOME3 alternate icon file shown as blank square by kaza_perl_ip

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.