[perl-win32-gui] No entry field when using Win32::GUI::Textfield

[perl-win32-gui]

I am trying to learn Win32::GUI module and am going through the tutorials that were 
included with the module.  However, when I try to create an edit field, there is not 
an text entry area.  What am I doing wrong?

<Code snippet>

$main->AddTextfield(
                -name=>'Sample',
                -background=>[255,255,255],
                -left=>75,
                -top=>110,
                -prompt=>"Type here:",
                );

<End of snippet>

The end result is that I get the prompt but no text entry box.

Thanks for your help.
Greg Howard