Re: [perl-win32-gui-users] How to catch unwanted Win32::Printer errors

[Robert M. <rob...@us...>]

On 03/07/07, Perl Rob <pe...@co...> wrote:
>
> When I run my code to print an image file, the standard "Print" dialog
> appears as expected, and my file is printed without problems if I click
> "OK". However, if I click "Cancel" on the dialog, Win32::Printer opens a
> dialog box with a cryptic error (about a printer object not being created)
> that my users will not understand and that I don't want them to see. Any
> ideas on how I can suppress (or take control of) this behavior from
> Win32::Printer? I expect that I need to use an eval block, but I'm not sure
> how to use eval (getting all sorts of syntax errors). Here's my code:
>
> my $dc = new Win32::Printer
> (
>     papersize => LETTER,
>     dialog => NOSELECTION,
>     description => ' Coloring Page(s)',
>     unit => 'mm'
> );

Rob,

I've never used Win32::Print, but did take a quick ppek at the code.
I think you can do something like this (completely untested):

my $dc = eval { Win32::Printer->new(  ... YOUR OPTIONS HERE ... ); };
if ($@) {    # There was a die() in the eval
   if($^E != 1223) {   # Win32::Printer does SetLastError(ERROR_CANCELLED)
                             # if user presses cancel
        die $@;
  }
  else {
    # user cancelled, do something
  }
}

Regards,
Rob.