Re: How to perform a subroutine run in cpan Tk::ExecuteCommand module

my $cmd = `&test($param1, $param2)` ;#Subroutine to be called by the T
+k::ExecuteCommand button click
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Backticks are not how you store a subroutine to be called later. See qx on what backticks actually do.

Did you try printing $cmd to find out what is actually contained in $cmd.

Most likely, you want to store a subroutine reference in $cmd:

my $cmd= sub {
    test($param1, $param2);
};
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Re^2: How to perform a subroutine run in cpan Tk::ExecuteCommand module by Janish (Sexton) on Jun 25, 2014 at 07:44 UTC
Thanks for your reply. I'm newbie, and yes, I tried to print out the $cmd, it print out nothing. Is that possible to call subroutine from the $ec->configure(-command => ) line? I wonder how people do if they want to execute external program which read wrapper (text in my case) with this module, as for now my end it only works with single liner command.	[reply]
Re^3: How to perform a subroutine run in cpan Tk::ExecuteCommand module by Corion (Patriarch) on Jun 25, 2014 at 07:50 UTC
Calling external programs is done by system or qx/backticks. If you want to call an external program when a button is clicked, put that call to the external program in your callback: `my $cmd= sub { my $commandline= "my/external/program --foo=param1 --bar=param2"; system($commandline) == 0 or warn "Couldn't launch [$commandline]: $!/$?"; };` [download]	[reply] [d/l]
Re^4: How to perform a subroutine run in cpan Tk::ExecuteCommand module by Janish (Sexton) on Jun 25, 2014 at 08:11 UTC
I updated the code as you suggested, but yet it still doesn't work out for me. It now placing the random number "CODE(0x78efb0)" within the entry.	[reply]
Re^5: How to perform a subroutine run in cpan Tk::ExecuteCommand module by Corion (Patriarch) on Jun 25, 2014 at 08:16 UTC
Re^6: How to perform a subroutine run in cpan Tk::ExecuteCommand module by Janish (Sexton) on Jun 25, 2014 at 08:25 UTC
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Re^4: How to perform a subroutine run in cpan Tk::ExecuteCommand module by Janish (Sexton) on Jun 25, 2014 at 08:14 UTC
I have updated my code as you suggested, but yet it still not work out for me. It is now placing a random generated number (CODE(0x78efb0) within the entry.	[reply]