Tk::Optionmenu 804.027

Tk::Optionmenu will 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, [...], ... 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 Tk::BrowseEntry. 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. -textvariable Reference to a scalar that contains the text label of 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, $tvar); my $opt = $mw->Optionmenu( -options => [[jan=>1], [feb=>2], [mar=>3], [apr=>4]], -command => sub { print "got: ", shift, "n" }, -variable => $var, -textvariable => $tvar )->pack; $opt->addOptions([may=>5],[jun=>6],[jul=>7],[aug=>8]); my $f = $mw->Frame(-relief=>groove, -borderwidth => 2)->pack; $f->Label(-textvariable=>$tvar)->pack(-side => left); $f->Label(-text => " -> ")->pack(-side => left); $f->Label(-textvariable=>$var)->pack(-side => left); $mw->Button(-text=>Exit, -command=>sub{$mw->destroy})->pack; MainLoop;.

Requirements:	No special requirements
Platforms:	Linux
Keyword:	Libraries,  Option,  Options,  Pack,  Predefined,  Programming,  Select,  Tkoptionmenu,  User
Users rating:	0/10