newCDKEntry, activateCDKEntry, injectCDKEntry, setCDKEntry,
setCDKEntryValue, getCDKEntryValue, setCDKEntryMax,
getCDKEntryMax, setCDKEntryMin, getCDKEntryMin, setCDKEntryFillerChar,
getCDKEntryFillerChar, setCDKEntryHiddenChar,
getCDKEntryHiddenChar, setCDKEntryBox, getCDKEntryBox,
setCDKEntryULChar, setCDKEntryURChar, setCDKEntryLLChar,
setCDKEntryLRChar, setCDKEntryVerticalChar,
setCDKEntryHorizontalChar, setCDKEntryBoxAttribute, setCDKEntryBackgroundColor,
setCDKEntryCB, drawCDKEntry,
eraseCDKEntry, cleanCDKEntry, destroyCDKEntry, setCDKEntryPreProcess,
setCDKEntryPostProcess - Creates a managed
curses entry widget.
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
CDKENTRY *newCDKEntry (CDKSCREEN *cdkscreen, int xpos, int
ypos, char *title, char *label, chtype fieldAttribute,
chtype fillerCharacter, EDisplayType displayType, int
fieldWidth, int minimumLength, int maximumLength, boolean
box, boolean shadow);
char *activateCDKEntry (CDKENTRY *entry, chtype *actions);
int injectCDKEntry (CDKENTRY *entry, chtype input);
void setCDKEntry (CDKENTRY *entry, char *value, int mini-
mumLength, int maximumLength, boolean box);
void setCDKEntryValue (CDKENTRY *entry, char *value);
char *getCDKEntryValue (CDKENTRY *entry);
void setCDKEntryMax (CDKENTRY *entry, int maximum);
int getCDKEntryMax (CDKENTRY *entry);
void setCDKEntryMin (CDKENTRY *entry, int minimum);
int getCDKEntryMin (CDKENTRY *entry);
void setCDKEntryBox (CDKENTRY *entry, boolean box);
void setCDKEntryFillerChar (CDKENTRY *entry, chtype char-
acter);
chtype getCDKEntryFillerChar *CDKENTRY *entry);
void setCDKEntryHiddenChar (CDKENTRY *entry, chtype char-
acter);
chtype getCDKEntryHiddenChar *CDKENTRY *entry);
boolean getCDKEntryBox (CDKENTRY *entry);
void setCDKEntryBox (CDKENTRY *entry, boolean box);
boolean getCDKEntryBox (CDKENTRY *entry);
void setCDKEntryULChar (CDKENTRY *,entry, chtype charac-
ter);
void setCDKEntryURChar (CDKENTRY *,entry, chtype charac-
ter);
void setCDKEntryLLChar (CDKENTRY *,entry, chtype charac-
ter);
void setCDKEntryLRChar (CDKENTRY *,entry, chtype charac-
ter);
void setCDKEntryVerticalChar (CDKENTRY *,entry, chtype
character);
void setCDKEntryHorizontalChar (CDKENTRY *,entry, chtype
character);
void setCDKEntryBoxAttribute (CDKENTRY *,entry, chtype
character);
void setCDKEntryBackgroundColor (CDKENTRY *,entry, char *
color);
void setCDKEntryCB (CDKENTRY *entry, ENTRYCB callBackFunc-
tion);
void moveCDKEntry (CDKENTRY *entry, int box, int box,
boolean relative, boolean refresh);
void positionCDKEntry (CDKENTRY *entry);
void drawCDKEntry (CDKENTRY *entry, boolean box);
void eraseCDKEntry (CDKENTRY *entry);
void cleanCDKEntry (CDKENTRY *entry);
void destroyCDKEntry (CDKENTRY *entry);
void setCDKEntryPreProcess (CDKENTRY *entry, PROCESSFN
callback, void * data);
void setCDKEntryPostProcess (CDKENTRY *entry, PROCESSFN
callback, void * data);
void bindCDKObject (EObjectType widgetType, void *object,
chtypekey, BINDFNfunction, void *data);
The Cdk entry widget creates an entry box with a label and
an entry field. The following are functions which create
or manipulate the Cdk entry box widget.
CDKENTRY *newCDKEntry (CDKSCREEN *screen, int xpos, int
ypos, char *title, char *label, chtype fieldAttribute,
chtype fillerCharacter, EDisplayType displayType, int
fieldWidth, int minimumLength, int maximumLength, boolean
box, boolean shadow);
This function creates a pointer to an entry widget. The
screen parameter is the screen you wish this widget to
be placed in. The parameter xpos controls the placement
of the object along the horizontal axis. This parameter
can accept an integer value or one of the pre-defined
values of LEFT, RIGHT, and CENTER. The parameter ypos
controls the placement of the object along the vertical
axis. This parameter can accept an integer value or one
of the pre-defined values of TOP, BOTTOM, and CENTER.
The title parameter is the string which will be displayed
at the top of the widget. The title can be more
than one line; just provide a carriage return character
at the line break. The label parameter is the string
which will be displayed in the label of the entry
field. The fieldAttribute is the attribute of the characters
to be displayed when they are typed in. filler
is the character which is to be displayed in an empty
space in the entry field. The parameter displayType
tells how the entry field will behave when a character
is entered into the field. The following table outlines
valid values for this field and what they mean:
Display_Type Meaning
vCHAR Only accepts alphabetic characters.
vLCHAR Only accepts alphabetic characters.
Maps the character to lower case
when a character has been accepted.
vUCHAR Only accepts alphabetic characters.
Maps the character to upper case
when a character has been accepted.
vHCHAR Only accepts alphabetic characters.
Displays a . when a character
has been accepted.
vUHCHAR Only accepts alphabetic characters.
Displays a . and maps the
character to upper case when a
character has been accepted.
vLHCHAR Only accepts alphabetic characters.
Displays a . and maps the
character to lower case when a
character has been accepted.
vINT Only accepts numeric characters.
vHINT Only accepts numeric characters.
Displays a . when a character
has been accepted.
vMIXED Accepts any character types.
vLMIXED Accepts any character types.
Maps the character to lower case
when an alphabetic character has
been accepted.
vUMIXED Accepts any character types.
Maps the character to upper case
when an alphabetic character has
been accepted.
vHMIXED Accepts any character types.
Displays a . when a character
has been accepted.
vLHMIXED Accepts any character types.
Displays a . and maps the
character to lower case when a
character has been accepted.
vUHMIXED Accepts any character types.
Displays a . and maps the
character to upper case when a
character has been accepted.
vVIEWONLY Uneditable field.
The fieldWidth parameter states how wide the field
will be. If a value of zero is provided, the field
will be made as wide as possible on the screen. If a
negative value is given, then the field width will
be the maximum width minus the value provided. The
parameter minimumLength states how many characters
have to be entered before the user can exit the
entry field. The maximumLength parameter sets the
maximum number of characters that can be entered.
The box parameter states whether the widget will be
drawn with a box around it or not. The shadow parameter
accepts a boolean value to turn the shadow on
or off around this widget. If the widget could not
be created then a NULL pointer is returned.
char *activateCDKEntry (CDKENTRY *entry, chtype
*actions);
This function activates the entry widget and lets
the user interact with the widget. The parameter
entry is a pointer to a non-NULL entry widget. If
the actions parameter is passed with a non-NULL
value, the characters in the array will be injected
into the widget. To activate the widget interactively
pass in a NULL pointer for actions. If the
character entered into this widget is RETURN or TAB
then this function will return a char * representing
the information typed into the widget and the structure
member exitType will be set to vNORMAL. If the
character entered was ESCAPE then the function will
returns NULL pointer and the structure member exit-
Type is set to vESCAPE_HIT.
char *injectCDKEntry (CDKENTRY *entry, chtype charac-
ter);
This function injects a single character into the
widget. The parameter entry is a pointer to a nonNULL
entry. The parameter character is the character
to inject into the widget. If the character injected
into this widget was RETURN or TAB then this function
will return a char * representing the information
typed into the widget and the structure member
exitType will be set to vNORMAL. If the character
entered was ESCAPE then the function will returns
NULL pointer and the structure member exitType is
set to vESCAPE_HIT. Any other character injected
into the widget will set the structure member exit-
Type to vEARLY_EXIT and the function will return a
NULL pointer.
void setCDKEntry (CDKENTRY *entry, char *value, int
minimumLength, int maximumLength, boolean box);
This function lets the programmer modify certain
elements of an already defined entry widget. The
value parameter sets the value of the contents of
the entry field. The other parameter names correspond
to the same parameter names listed in the
newCDKEntry function.
void setCDKEntryValue (CDKENTRY *entry, char *value);
This sets the current value of the widget.
char *getCDKEntryValue (CDKENTRY *entry);
This returns the current value of the widget.
void setCDKEntryMax (CDKENTRY *entry, int maximum);
This sets the maximum length of the string that the
widget will allow.
int getCDKEntryMax (CDKENTRY *entry);
This returns the maximum length of a string the
widget will allow.
void setCDKEntryMin (CDKENTRY *entry, int maximum);
This sets the minimum length of the string that the
widget will allow.
int getCDKEntryMin (CDKENTRY *entry);
This returns the minimum length of a string the widget
will allow.
void setCDKEntryFillerChar (CDKENTRY *entry, chtype
filler);
This sets the character to use when drawing unused
space in the field.
chtype getCDKEntryFillerChar (CDKENTRY *entry);
This returns the character being used to draw unused
space in the widget.
void setCDKEntryHiddenChar (CDKENTRY *entry, chtype
character);
This sets the character to use when using a hidden
character type.
chtype getCDKEntryHiddenChar (CDKENTRY *entry);
This returns the character being used to draw the
hidden character type.
void setCDKEntryBox (CDKENTRY *entry, boolean boxWid-
get);
This sets whether or not the widget will be draw
with a box around it.
boolean getCDKEntryBox (CDKENTRY *entry);
This returns whether or not the widget will be drawn
with a box around it.
void setCDKEntryULChar (CDKENTRY *entry, chtype charac-
ter);
This function sets the upper left hand corner of the
widgets box to the given character.
void setCDKEntryURChar (CDKENTRY *entry, chtype charac-
ter);
This function sets the upper right hand corner of
the widgets box to the given character.
void setCDKEntryLLChar (CDKENTRY *entry, chtype charac-
ter);
This function sets the lower left hand corner of the
widgets box to the given character.
void setCDKEntryLRChar (CDKENTRY *entry, chtype charac-
ter);
This function sets the lower right hand corner of
the widgets box to the given character.
void setCDKEntryVerticalChar (CDKENTRY *entry, chtype
character);
This function sets the vertical drawing character
for the box to the given character.
void setCDKEntryHorizontalChar (CDKENTRY *entry, chtype
character);
This function sets the horizontal drawing character
for the box to the given character.
void setCDKEntryBoxAttribute (CDKENTRY *entry, chtype
attribute);
This function sets the attribute of the box.
void setCDKEntryBackgroundColor (CDKENTRY *entry, char
*color);
This sets the background color of the widget. The
parameter color is in the format of the Cdk format
strings. To get more information look at the
cdk_display manual page.
void setCDKEntryCB (CDKENTRY *entry, ENTRYCB callback-
Function);
This function allows the programmer to set a different
widget input handler. The parameter callback-
Function is of type ENTRYCB. The current default
function is CDKEntryCallBack.
void moveCDKEntry (CDKENTRY *entry, int xpos, int ypos,
boolean relative, boolean refresh);
This function moves the given widget to the given
position. The parameters xpos and ypos is the new
position of the widget. The parameter xpos can
accept an integer value or one of the pre-defined
values of TOP, BOTTOM, and CENTER. The parameter
ypos can accept an integer value or one of the predefined
values of LEFT, RIGHT, and CENTER. The
parameter relative states whether the xpos/ypos pair
is a relative move or an absolute move. For example
if xpos = 1 and ypos = 2 and relative = TRUE, then
the widget would move one row down and two columns
right. If the value of relative was FALSE then the
widget would move to the position (1,2). Do not use
the values of TOP, BOTTOM, LEFT, RIGHT, or CENTER
when relative = TRUE. (weird things may happen). The
final parameter refresh is a boolean value which
states whether the widget will get refreshed after
the move or not.
void positionCDKEntry (CDKENTRY *entry);
This function allows the user to move the widget
around the screen via the cursor/keypad keys. The
following key bindings can be used to move the widget
around the screen.
Key Bindings
Key Action
Up Arrow Moves the widget up one line.
Down Arrow Moves the widget down one line.
Left Arrow Moves the widget left one column
Right Arrow Moves the widget right one column
Keypad-1 Moves the widget down one line
and left one column.
Keypad-2 Moves the widget down one line.
Keypad-3 Moves the widget down one line
and right one column.
Keypad-4 Moves the widget left one column
Keypad-5 Centers the widget both vertically
and horizontally.
Keypad-6 Moves the widget right one column
Keypad-7 Moves the widget up one line
and left one column.
Keypad-8 Moves the widget up one line.
Keypad-9 Moves the widget up one line
and right one column.
t Moves the widget to the top of the screen.
b Moves the widget to the bottom of the screen.
l Moves the widget to the left of the screen.
r Moves the widget to the right of the screen.
c Centers the widget between the left and
right of the window.
C Centers the widget between the top and
bottom of the window.
Escape Returns the widget to it's original position.
Return Exits the function and leaves the widget
where it was.
Keypad means that if the keyboard you are using
has a keypad, then the Num-Lock light has to be
on in order to use the keys as listed. (The
numeric keys at the top of the keyboard will work
as well.)
void drawCDKEntry (CDKENTRY *entry, boolean box);
This function draws the entry widget on the
screen. The box option draws the widget with
or without a box.
void eraseCDKEntry (CDKENTRY *entry);
This function removes the widget from the
screen. This does NOT destroy the widget.
void cleanCDKEntry (CDKENTRY *entry);
This function clears the information from the
field.
void destroyCDKEntry (CDKENTRY *entry);
This function removes the widget from the
screen and frees up any memory the object may
be using.
void setCDKEntryPreProcess (CDKENTRY *entry, PROCESSFN
function, void *data);
This function allows the user to have the widget
call a function after a key is hit and
before the key is applied to the widget. The
parameter function if of type PROCESSFN. The
parameter data is a pointer to void. To learn
more about pre-processing read the cdk_process
manual page.
void setCDKEntryPostProcess (CDKENTRY *entry,
PROCESSFN function, void *data);
This function allows the user to have the widget
call a function after the key has been
applied to the widget. The parameter function
if of type PROCESSFN. The parameter data is a
pointer to void. To learn more about post-processing
read the cdk_process manual page.
void bindCDKObject (EObjectType widgetType, void
*object, chtype key, BINDFN function, void
*data);
This function allows the user to create special
key bindings. The widgetType parameter is
a defined type which states what Cdk object
type is being used. To learn more about the
type EObjectType read the cdk_binding manual
page. The object parameter is the pointer to
the widget object. The key is the character to
bind. The function is the function type. To
learn more about the key binding callback
function types read the cdk_binding manual
page. The last parameter data is a pointer to
any data that needs to get passed to the callback
function.
When the widget is activated there are several default key
bindings which will help the user enter or manipulate the
information quickly. The following table outlines the keys
and their actions for this widget.
Key Action
Left Arrow Moves the cursor the the left.
CTRL-B Moves the cursor the the left.
Right Arrow Moves the cursor the the right.
CTRL-F Moves the cursor the the right.
Delete Deletes the character to the left of the cursor.
Backspace Deletes the character to the left of the cursor.
CTRL-H Deletes the character to the left of the cursor.
CTRL-V Pastes whatever is in the paste buffer, into the widget.
CTRL-X Cuts the contents from the widget and saves a copy in
the paste buffer.
CTRL-Y Copies the contents of the widget into the paste buffer.
CTRL-U Erases the contents of the widget.
CTRL-A Moves the cursor to the begining of the entry field.
CTRL-E Moves the cursor to the end of the entry field.
CTRL-T Transposes the characer under the cursor with the
character to the right.
Return Exits the widget and returns a char * representing
the information which was typed into the field. It also
sets the structure member exitType in the widget
pointer to vNORMAL.
Tab Exits the widget and returns a char * representing
the information which was typed into the field. It also
sets the structure member exitType in the widget
pointer to vNORMAL.
Escape Exits the widget and returns a NULL pointer. It also
sets the structure member exitType in the widget pointer
to the value of vESCAPE_HIT.
Ctrl-L Refreshes the screen.
cdk(3), cdk_binding(3), cdk_display(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 <unctrl.h>.
If you have Ncurses installed on your machine add
-DNCURSES to the compile line to include the Ncurses
header files instead.
24 April 1997 cdk_entry(3)
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