Perl in a Nutshell, 2nd Edition

The Toplevel Widget

Create a toplevel widget, displayed independently from the main window with the same decoration as the window system, using the Toplevel method.

The standard configuration options that apply to Toplevel are: -background, -bg, -borderwidth, -bw, -cursor, -height, -highlightbackground, -highlightcolor, -highlightthickness, -relief, -takefocus, and -width.

Other options are:

-class => name

The class associated with the Toplevel widget.

-colormap => \$ window

Specifies another window to share the colormap with. You can point to another window or use the value new to specify a new colormap. Default is undef.

-screen => screen

The screen to place the toplevel widget on.

-visual => type n

For the X Window System, changes the depth of colors.