Perl in a Nutshell, 2nd Edition

The form Geometry Manager

The form geometry manager arranges the geometry of children in the parent window according to attachment rules. In addition, form can be used as a replacement for the existing Tk pack and place geometry managers. For example, to position a widget $top_w on top of $bot_w, you’d do this:

$bot_w->form(-top=>[$topw_w, 0]);

Options to form are:

-b => attachment

Abbreviation for the -bottom option.

-bottom => attachment

Specifies an attachment for the bottom edge of the slave window.

-bottomspring => attachment

Specifies the weight of the spring at the bottom edge of the slave window.

-bp => value

Abbrevation for the -padbottom option.

-bs => weight

Abbrevation for the -bottomspring option.

-fill => style

Specifies the fillings when springs are used for this widget. The value must be x, y, both, or none.

-in => $master

Places the slave window into the specified $master window. If the slave was originally in $another_master, all attachment values with respect to $original_master are discarded. The attachment values will need to be specified again. If you use -in, it must be used first in the options list.

-l => attachment

Abbreviation for the -left option.

-left => attachment

Specifies an attachment for the left edge of slave window, $slave.

-leftspring => weight

Specifies the weight of the spring at the edge of the slave window, $slave.

-lp => value

Abbreviation for the -padleft option.

-ls => weight

Abbreviation for the -leftspring option.

-padbottom => value

Specifies the amount of external ...