Configure default widget options in Tk

Is there a way to configure the default options that a particular type of widget will use when initialized? I have been setting them in a hash and adding it to the parameter list when calling the widget's constructor. It seems that there should be a better way built into Tk, but I've been unable to find it. 

# this is what I'm doing:
my %button_options = (
    -font => '{Arial} 10 {bold}',
    -padx => 2,
    -pady => 2,
);

my $button1 = $mw->Button(
    %button_options,
    -text => 'foo',
    -command => \&foo,
);

my $button2 = $mw->Button(
    %button_options,
    -text => 'bar',
    -command => \&bar,
);

# I would like to do it something like this:
setDefaults (
    -widget => 'Button',
    -font => '{Arial} 10 {bold}',
    -padx => 2,
    -pady => 2,
);

my $button1 = $mw->Button(
    -text => 'foo',
    -command => \&foo,
);

my $button2 = $mw->Button(
    -text => 'bar',
    -command => \&bar,
);

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In reply to Configure default widget options in Tk by hangon

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