Hello! I wrote a simple PerlTk script and after finishing the functionality I decided to change the icon. So I downloaded a 512x512 PNG file, the beginning of the GUI part of the script looke like: 
my    $gui_mw_wrapper = new MainWindow;
    $gui_mw_wrapper -> geometry("1000x1000");

my    $icon = $gui_mw_wrapper -> Photo(-width => 32, -height => 32, -f
+ile => '<absolute path>/code-terminal_15180865.png', -format => 'png'
+);
    $gui_mw_wrapper -> iconimage($icon);

[download]
and when I run it, the icon is a blank square (as opposed to default PerlTk icon which shows when I comment the 2 last line of sample). After some reading I saw an advice to have the image the same size as "-width"/"-height" values so I opened GIMP, resized the image to 32x32, changed the file path line to: 

my    $icon = $gui_mw_wrapper -> Photo(-width => 32, -height => 32, -f
+ile => '/nas/users/arie/bin/icons/code-terminal_15180865_32x32.png', 
+-format => 'png');

[download]
and got the same result. So, what am I doing wrong? TIA!

In reply to PerlTk GNOME3 alternate icon file shown as blank square by kaza_perl_ip

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