use/require file problem

[julie25]

hi,
I would like to use other files in my main file.

- What do I have to write in the other files? (All use::* ?)(this may be stupid question ...)
- Do I have to redefine all global variables?

I wrote:
####Main file, I introduced with:
require "MyFile2.pl";

####MyFile2:
One fonction that calls for a toplevel creation from my main window(argument of the fonction)...

sub func{
my $mw = @_;
$sw = $mw->Toplevel;
}
return 1;

The error tells me that i cannot create a toplevel without an object reference...

Thanks for help,

Julie

 

[Coderifous]

Instead of

my $mw = @_;

try:

my $mw = shift @_;

Otherwise, it appears that your understanding of "including" code is correct. The easiest way to understand requires is this:

Where ever Perl sees 'require' in your code, it stops what it's doing, finds the required file, and evaluates the contents of the file. Hopefully it's valid perl code
When it's done evaluating the external file, it goes back to the original code and continues parsing.

So while most people use 'requires' to load up some subroutines or data structures, it is possible to have code execute when the require is done, like so:

# main file
print "Hey hey hey!\n";
require 'fat_albert_says.pl'
print "*plop*\n";
__END__

# now in 'fat_albert_says.pl'
print "Bombs away!\n";

1;
__END__

But doing stuff like that is pretty uncommon.

Hope that helps you, Julie.

--jim

 

[arcnon]

whatever is your main script all you have to do is use require the script library etc. in that main file not all of them. I always you tons of subs the biggest problem that happens is when you try to use a var that hasn't been set yet.

 

[julie25]

thank you very much Jim and Arcnon for your help!
I think it will function now.


Julie