Cdk 3

Cdk(3)                    Library Functions Manual                    Cdk(3)


       cdk - Curses Development Kit


       cc [ flag ... ] file ...  -lcdk [ library ... ]

       #include <cdk.h>

       Cdk  provides  functions  to  use a large number of predefined curses
       widgets.  To use the Cdk widgets  the  header  file,  cdk.h  must  be
       included in the source.

       The widgets available from Cdk are listed below.

                   Widget Type                 Manual Page Name
                   Alphalist                   cdk_alphalist(3)
                   Button                      cdk_button(3)
                   Buttonbox                   cdk_buttonbox(3)
                   Calendar                    cdk_calendar(3)
                   Dialog                      cdk_dialog(3)
                   DoubleFloat Scale           cdk_dscale(3)
                   Entry Field                 cdk_entry(3)
                   File Selector               cdk_fselect(3)
                   File Viewer                 cdk_viewer(3)
                   Floating Scale              cdk_fscale(3)
                   Floating Slider             cdk_fslider(3)
                   Graph                       cdk_graph(3)
                   Histogram                   cdk_histogram(3)
                   Integer Scale               cdk_scale(3)
                   Integer Slider              cdk_slider(3)
                   Item List                   cdk_itemlist(3)
                   Label                       cdk_label(3)
                   Marquee                     cdk_marquee(3)
                   Matrix                      cdk_matrix(3)
                   Multiple Line Entry Field   cdk_mentry(3)
                   Pulldown Menu               cdk_menu(3)
                   Radio List                  cdk_radio(3)
                   Scrolling List              cdk_scroll(3)
                   Scrolling Selection List    cdk_selection(3)
                   Scrolling Window            cdk_swindow(3)
                   Template                    cdk_template(3)
                   Unsigned Scale              cdk_uscale(3)
                   Unsigned Slider             cdk_uslider(3)

       The rest of the manual pages describe supporting functions:

             Manual Page Name     Description
             cdk_binding(3)       Outlines  how to create user defin-
                                  able key bindings.
             cdk_display(3)       Shows how to  add  special  display
                                  attributes,  colors, and justifica-
                                  tion into a widget.
             cdk_draw(3)          Outlines functions used for drawing
                                  text and lines.
             cdk_screen(3)        Demonstrates  the  use  of  screens
                                  within Cdk.
             cdk_misc(3)          Outlines  miscellaneous   functions
                                  provided with the Cdk library.

             cdk_process(3)       Demonstrates  the  use  of the pre-
                                  and post-process function class.


       Cdk is a library of functions which allow  a  programmer  to  quickly
       create  a full screen interactive program with ease.  The Cdk widgets
       support the following features:

       o Ncurses library.
            Instead of using the  standard  curses  library,  Cdk  can  take
            advantage  of the colors that Ncurses provides.  To learn how to
            take advantage of Cdk's color capabilities, see cdk_display(3).

       o Key Bindings.
            Individual keys can be overridden with a callback.  The callback
            is set up using the bindCDKObject function.  To learn more about
            this see cdk_binding(3).

       o Pre and Post Processing.
            Certain widgets allow the user to trap a  character  before  and
            after the character has been applied to the widget.  This allows
            programmers to `filter' character input.  To  learn  more  about
            this see cdk_process(3).

       o Self Test Widgets.
            With the use of the inject function class and the activate func-
            tion, programmers can have the widgets  test  themselves.   This
            allows the programmer to perform automated tests on a final pro-

       o Special Display Formats
            There are special character format commands that can be inserted
            into  any  string  in  Cdk and the contents will get mapped to a
            chtype (see the curses manual page) with  character  attributes.
            This  allows the programmer to insert format types on each char-
            acter if they wish.

       o The Ability To Build Predefined Screens
            Widgets can be associated to any given screen.  If there is more
            than one screen defined, then Cdk has the ability to "flip" from
            one screen to another with ease.  See the cdk_screen manual page
            for more details.


       All  of  the  widgets have a member of the structure called exitType.
       This member states how the widget exited.  There are three values  in
       which to check for, they are as follows:

             |Value            | Meaning                             |
             |vNORMAL          | This  means  the widget exited nor- |
             |                 | mally.  This value is set when  the |
             |                 | widget  is given the characters TAB |
             |                 | or RETURN.                          |
             |vEARLY_EXIT      | This means the widget exited early. |
             |                 | This  value  is set when characters |
             |                 | such as TAB or RETURN are  injected |
             |                 | into  the  widget via the injectCD- |
             |                 | KXXX  function  and  the  character |
             |                 | injected does not exit the widget.  |
             |vERROR           | This value states that an error was |
             |                 | returned by curses,  e.g.,  if  the |
             |                 | terminal was disconnected.          |
             |vESCAPE_HIT      | This  value  states  the  user  hit |
             |                 | ESCAPE to leave the widget.         |
             |vNEVER_ACTIVATED | This is the initial  state  of  the |
             |                 | value.   This means that the widget |
             |                 | has not been activated.             |


       cdk_binding(3),     cdk_display(3),     cdk_draw(3),     cdk_misc(3),
       cdk_process(3), cdk_screen(3)


       The  header  file  <cdk.h>  automatically  includes  the header files
       <curses.h>,   <stdlib.h>,    <string.h>,    <ctype.h>,    <unistd.h>,
       <dirent.h>,  <time.h>, <errno.h>, <pwd.h>, <grp.h>, <sys/stat.h>, and
       <sys/types.h>.  The <curses.h> header  file  includes  <stdio.h>  and