Полезная информация

 Tk::Optionmenu - Let the user select one of some predefined options values


NAME

Tk::Optionmenu - Let the user select one of some predefined options values


SYNOPSIS

    use Optionmenu;
    $opt = $w->Optionmenu(
                        -options => REFERENCE_to_OPTIONLIST,
                        -command => CALLBACK,
                        -variable => SCALAR_REF,
                        );
    $opt->addOptions( OPTIONLIST );
    # OPTION LIST is
    #   a)  $val1, $val2, $val3,...
    #   b)  [ $lab1=>$val1], [$lab2=>val2], ... ]
    #   c)  combination of a) and b), e.g.,
    #       val1, [$lab2=>val2], val3, val4, [...], ...


DESCRIPTION

The Optionmenu widget allows the user chose between a given set of options.

If the user should be able to change the available option have a look at the Tk::BrowseEntry manpage.


OPTIONS

-options
(Re)sets the list of options presented.

-command
Defines the callback that is invokes when a new option is selected.

-variable
Reference to a scalar that contains the current value of the selected option.


METHODS

addOptions
Adds OPTION_LIST to the already available options.


EXAMPLE

    use Tk;
    my $mw = MainWindow->new();
    my $var;
    my $opt = $mw->Optionmenu(
                -options => [qw(jan feb mar apr)],
                -command => sub { print "got: ", shift, "\n" },
                -variable => \$var,
                )->pack;
    $opt->addOptions([may=>5],[jun=>6],[jul=>7],[aug=>8]);
    $mw->Label(-textvariable=>\$var, -relief=>'groove')->pack;
    $mw->Button(-text=>'Exit', -command=>sub{$mw->destroy})->pack;
    MainLoop;


SEE ALSO

the Tk::Menubutton manpage, the Tk::BrowseEntry manpage

 Tk::Optionmenu - Let the user select one of some predefined options values