http://www.perlmonks.org?node_id=995292


in reply to Re^9: Can't change icon with win32 module
in thread Can't change icon with win32 module

Here is mine

#!/usr/bin/perl -- use strict; use warnings; use Win32::GUI(); use Win32::API; Win32::API->Import('kernel32','BOOL SetConsoleIcon(HWND icon)'); @ARGV or @ARGV = map { glob $_ } "C:/Progra~1/*.ico", "C:/Progra~1/*/*.ico", "C:/Progra~1/*/*/*.ico", "C:/Progra~1/*/*/*/*.ico", #~ "C:/Progra~1/*/*/*/*/*.ico", "C:/WINDOWS/*/*.ico", "C:/WINDOWS/*/*/*.ico", "C:/WINDOWS/*/*/*/*.ico", #~ "C:/WINDOWS/*/*/*/*/*.ico", #~ "C:/WINDOWS/*/*/*/*/*/*.ico", #~ "C:/WINDOWS/*/*/*/*/*/*/*.ico", ;;;; for my $file ( @ARGV ){ print "$file\n"; eval { my $icon = Win32::GUI::Icon->new( $file ) or die sprintf qq/ErrIcon \$!(%d)(%s)\n\$^E(%d)(%s)\nGLS(% +d)(%s)/, $!,$!,$^E,$^E, Win32::GetLastError(), Win32::FormatMessage(Win32::GetLastError()) ;;;;; SetConsoleIcon( $icon->{-handle} ) or die sprintf qq/ErrSet \$!(%d)(%s)\n\$^E(%d)(%s)\nGLS(%d +)(%s)/, $!,$!,$^E,$^E, Win32::GetLastError(), Win32::FormatMessage(Win32::GetLastError()) ;;;;; 1; } or warn "$@\n\n"; sleep 1; } SetConsoleIcon( undef );## restore __END__ $ perl sicon.pl sicon.pl perlmonks.favicon.ico sicon.pl sicon.pl ErrIcon $!(2)(No such file or directory) $^E(0)() GLS(0)(The operation completed successfully. ) at sicon.pl line 25. perlmonks.favicon.ico sicon.pl ErrIcon $!(2)(No such file or directory) $^E(0)() GLS(0)(The operation completed successfully. ) at sicon.pl line 25.

Obviously sicon.pl isn't an .ico file

Looking at these results and Win32::GUI::Icon docs, it is now obvious that it doesn't preserve $^E from the 2-3 ways it tries to load the file, so $^E ends up being uninformative

FormatMessage() OTOH assumes 0 means success where as $^E doesn't

Since this program works for me for about a dozen icon files I find in program files

I must assume there is something wrong with your box2.ico

good luck figuring it out :) You might hack on some GUI.xs to insert informative diagnostics, or hit up MSDN for specs regarding icon files so you can compare them to box2.ico ...