Widgets::ComboBox(3pm)					User Contributed Perl Documentation				    Widgets::ComboBox(3pm)

NAME

       Curses::Widgets::ComboBox - Combo-Box Widgets

MODULE VERSION

       $Id: ComboBox.pm,v 1.103 2002/11/03 23:34:50 corliss Exp corliss $

SYNOPSIS

	 use Curses::Widgets::ComboBox;

	 $cb = Curses::Widgets::ComboBox->new({
	   CAPTION     => 'Select',
	   CAPTIONCOL  => 'yellow',
	   COLUMNS     => 10,
	   MAXLENGTH   => 255,
	   MASK        => undef,
	   VALUE       => '',
	   INPUTFUNC   => &scankey,
	   FOREGROUND  => 'white',
	   BACKGROUND  => 'black',
	   BORDER      => 1,
	   BORDERCOL   => 'red',
	   FOCUSSWITCH => "	
",
	   CURSORPOS   => 0,
	   TEXTSTART   => 0,
	   PASSWORD    => 0,
	   X	       => 1,
	   Y	       => 1,
	   READONLY    => 0,
	   LISTITEMS   => [qw(foo bar wop)],
	   });

	 $cb->draw($mwh, 1);

	 See the Curses::Widgets pod for other methods.

REQUIREMENTS

       Curses
       Curses::Widgets
       Curses::Widgets::TextField
       Curses::Widgets::ListBox

DESCRIPTION

       Curses::Widgets::ComboBox provides simplified OO access to Curses-based combo-boxes.  This widget essentially acts as text field widget,
       but upon a KEY_DOWN or "
", a drop-down list is displayed, and the item selected is put in the text field as the value.

METHODS

       new (inherited from Curses::Widgets)

	 $cb = Curses::Widgets::ComboBox->new({
	   CAPTION     => 'Select',
	   CAPTIONCOL  => 'yellow',
	   COLUMNS     => 10,
	   MAXLENGTH   => 255,
	   MASK        => undef,
	   VALUE       => '',
	   INPUTFUNC   => &scankey,
	   FOREGROUND  => 'white',
	   BACKGROUND  => 'black',
	   BORDER      => 1,
	   BORDERCOL   => 'red',
	   FOCUSSWITCH => "	
",
	   CURSORPOS   => 0,
	   TEXTSTART   => 0,
	   PASSWORD    => 0,
	   X	       => 1,
	   Y	       => 1,
	   READONLY    => 0,
	   LISTITEMS   => [qw(foo bar wop)],
	   });

       The new method instantiates a new ComboBox object.  The only mandatory key/value pairs in the configuration hash are X and Y.  All others
       have the following defaults:

	 Key	     Default   Description
	 ============================================================
	 CAPTION       undef   Caption superimposed on border
	 CAPTIONCOL    undef   Foreground colour for caption text
	 COLUMNS	  10   Number of columns displayed
	 MAXLENGTH	 255   Maximum string length allowed
	 MASK	       undef   Not yet implemented
	 VALUE		  ''   Current field text
	 INPUTFUNC &scankey   Function to use to scan for keystrokes
	 FOREGROUND    undef   Default foreground colour
	 BACKGROUND    undef   Default background colour
	 BORDER 	   1   Display a border around the field
	 BORDERCOL     undef   Foreground colour for border
	 FOCUSSWITCH  "	
"   Characters which signify end of input
	 CURSORPOS	   0   Starting position of the cursor
	 TEXTSTART	   0   Position in string to start displaying
	 PASSWORD	   0   Subsitutes '*' instead of characters
	 READONLY	   0   Prevents alteration to content
	 LISTLINES	   5   Number of lines to display at a time
			       in the drop-down list
	 LISTCOLUMNS[COLUMNS]  Width of the drop-down list.  Defaults
			       to the same length specified for the
			       CombBox widget
	 LISTITEMS	  []   Items listed in drop-down list

       The CAPTION is only valid when the BORDER is enabled.  If the border is disabled, the field will be underlined, provided the terminal sup-
       ports it.

       If MAXLENGTH is undefined, no limit will be placed on the string length.

       draw (inherited from Curses::Widgets::TextField)

	 $cb->draw($mwh, 1);

       The draw method renders the text field in its current state.  This requires a valid handle to a curses window in which it will render
       itself.	The optional second argument, if true, will cause the field's text cursor to be rendered as well.

       popup

	 $combo->popup;

       This method causes the drop down list to be displayed.  Since, theoretically, this list should never be seen unless it's being actively
       used, we will always assume that we need to draw a cursor on the list as well.

HISTORY

       2001/12/09 -- First version of the combo box

AUTHOR
/COPYRIGHT
       (c) 2001 Arthur Corliss (corliss@digitalmages.com)

perl v5.8.8							    2006-09-14						    Widgets::ComboBox(3pm)