=head1 NAME

Tk::BrowseEntry - entry widget with popup choices.

=for pm Tixish/BrowseEntry.pm

=for category Tix Extensions

=head1 SYNOPSIS

    use Tk::BrowseEntry;

    $b = $frame->BrowseEntry(-label => "Label", -variable => \$var);
    $b->insert("end", "opt1");
    $b->insert("end", "opt2");
    $b->insert("end", "opt3");
    ...
    $b->pack;

=head1 DESCRIPTION

BrowseEntry is a poor man's ComboBox. It may be considered an
enhanced version of LabEntry which provides a button to popup the
choices of the possible values that the Entry may
take. BrowseEntry supports all the options LabEntry supports
except B<-textvariable>. This is replaced by B<-variable>. Other
options that BrowseEntry supports.

=over 4

=item B<-listwidth>

Specifies the width of the popup listbox.

=item B<-variable>

Specifies the variable in which the entered value is to be stored.

=item B<-browsecmd>

Specifies a function to call when a selection is made in the
popped up listbox. It is passed the widget and the text of the
entry selected. This function is called after the entry variable
has been assigned the value.

=item B<-listcmd>

Specifies the function to call when the button next to the entry
is pressed to popup the choices in the listbox. This is called before
popping up the listbox, so can be used to populate the entries in
the listbox.

=item B<-arrowimage>

Specifies the image to be used in the arrow button beside the entry
widget. The default is an downward arrow image in the file cbxarrow.xbm

=item B<-choices>

Specifies the list of choices to pop up.  This is a reference to an
array of strings specifying the choices.

=item B<-state>

Specifies one of three states for the widget: normal, readonly, or
disabled.  If the widget is disabled then the value may not be changed
and the arrow button won't activate.  If the widget is readonly, the
entry may not be edited, but it may be changed by choosing a value
from the popup listbox.  normal is the default.

=back

=head1 METHODS

=over 4

=item B<insert(>I<index>, I<string>B<)>

Inserts the text of I<string> at the specified I<index>. This string
then becomes available as one of the choices.

=item B<delete(>I<index1>, I<index2>B<)>

Deletes items from I<index1> to I<index2>.

=back

=head1 BUGS

BrowseEntry should really provide more of the ComboBox options.

=head1 AUTHOR

B<Rajappa Iyer> rsi@earthling.net

B<Chris Dean> ctdean@cogit.com made additions.

This code was inspired by ComboBox.tcl in Tix4.0 by Ioi Lam and
bears more than a passing resemblance to ComboBox code. This may
be distributed under the same conditions as Perl.

=cut