Hi, I'd like to use the -font option in a Tk Label if the font's been externally defined by the user. I'd also like to condense my lines of code by combining options I'm repeating. So I'd like something like this: 
my $newfont = '';
# maybe font value read from user, results in
# $newfont = "{liberation sans} 8 normal";
my $opt = "-fg => $fg, -bg => $bg";
$opt .= ", -font => $newfont" if length($newfont);
$rw->Label(-text => "Col. 1", $opt, -padx => 10)->grid(
   $rw->Label(-text => "Col. 2", $opt, -padx => 11),
   $rw->Label(-text => "Col. 3", $opt, -padx => 11))

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but I get this error message: 
Tk::Error: Odd number of args to Tk::Label->new(...)

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Nothing I could think of, including escaped quotes or eval(), has gotten around it, so for now I use an if-else that checks length($newfont) and repeats the Label widget creation, once with and once without -font.

Is this possible? I lack detailed perl knowledge, so probably something like \$${opt} would do the trick :-) Thanks!

In reply to tk option+value in variable? by cniggeler

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