cdk_mentry(3)
- NetBSD Manual Pages
cdk_mentry(3) cdk_mentry(3)
NAME
newCDKMentry, activateCDKMentry, injectCDKMentry, setCDKMentry, setCDK-
MentryValue, getCDKMentryValue, setCDKMentryMin, getCDKMentryMin,
setCDKMentryFillerChar, getCDKMentryFillerChar, setCDKMentryBox, getCD-
KMentryBox, setCDKMentryULChar, setCDKMentryURChar, setCDKMentryLLChar,
setCDKMentryLRChar, setCDKMentryVerticalChar, setCDKMentryHorizon-
talChar, setCDKMentryBoxAttribute, setCDKMentryBackgroundColor, setCDK-
MentryCB, drawCDKMentry, eraseCDKMentry, cleanCDKMentry, destroyCDKMen-
try, setCDKMentryPreProcess, setCDKMentryPostProcess - Creates a man-
aged curses multiple line entry widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
CDKMENTRY *newCDKMentry (CDKSCREEN *cdkscreen, int xpos, int ypos, char
*title, char *label, chtype fieldAttribute, chtype fillerCharacter,
EDisplayType displayType, int fieldWidth, int fieldRows, int logical-
Rows, int minimumLength, boolean box, boolean shadow);
char *activateCDKMentry (CDKMENTRY *mentry, chtype *actions);
char *injectCDKMentry (CDKMENTRY *mentry, chtype input);
void setCDKMentry (CDKMENTRY *mentry, char *value, int minimumLength,
boolean box);
void setCDKMmentryValue (CDKMENTRY *mentry, char *value);
char *getCDKMmentryValue (CDKMENTRY *mentry);
void setCDKMmentryMin (CDKMENTRY *mentry, int minimum);
int getCDKMmentryMin (CDKMENTRY *mentry);
void setCDKMmentryBox (CDKMENTRY *mentry, boolean box);
boolean getCDKMmentryBox (CDKMENTRY *mentry);
void setCDKMmentryBox (CDKMENTRY *mentry, boolean box);
boolean getCDKMmentryBox (CDKMENTRY *mentry);
void setCDKMentryCB (CDKMENTRY *mentry, MENTRYCB callBackFunction);
void setCDKMentryULChar (CDKMENTRY *,mentry, chtype character);
void setCDKMentryURChar (CDKMENTRY *,mentry, chtype character);
void setCDKMentryLLChar (CDKMENTRY *,mentry, chtype character);
void setCDKMentryLRChar (CDKMENTRY *,mentry, chtype character);
void setCDKMentryVerticalChar (CDKMENTRY *,mentry, chtype character);
void setCDKMentryHorizontalChar (CDKMENTRY *,mentry, chtype character);
void setCDKMentryBoxAttribute (CDKMENTRY *,mentry, chtype character);
void setCDKMentryBackgroundColor (CDKMENTRY *,mentry, char * color);
void moveCDKMentry (CDKMENTRY *mentry, int box, int box, boolean rela-
tive, boolean refresh);
void positionCDKMentry (CDKMENTRY *mentry);
void drawCDKMentry (CDKMENTRY *mentry, boolean box);
void eraseCDKMentry (CDKMENTRY *mentry);
void cleanCDKMentry (CDKMENTRY *mentry);
void destroyCDKMentry (CDKMENTRY *mentry);
void setCDKMentryPreProcess (CDKMENTRY *mentry, PROCESSFN callback,
void * data);
void setCDKMentryPostProcess (CDKMENTRY *mentry, PROCESSFN callback,
void * data);
void bindCDKObject (EObjectType widgetType, void *object, chtype key,
BINDFN function, void *data);
DESCRIPTION
The Cdk mentry widget creates a multiple line entry box with a label
and an entry field. The following are functions which create or manipu-
late the Cdk mentry box widget.
AVAILABLE FUNCTIONS
CDKMENTRY *newCDKMentry (CDKSCREEN *screen, int xpos, int ypos, char
*title, char *label, chtype fieldAttribute, chtype fillerCharacter,
chtype displayType, int fieldWidth, int fieldRows, int logicalRows, int
minimumLength, boolean box, boolean shadow);
This function creates a pointer to a mentry 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 hori-
zontal 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 mentry 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 mentry field. The parameter displayType tells how the
mentry 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 parameters fieldRows and fieldWidth control the height and width
of the field of the widget. If you provide a value of zero for
either of the values, the field in the widget will be made as large
as it can both in width and in height. If you provide a negative
value, the field will be created the full height or width minus the
value provided. While logicalRows states how many rows the mentry
field will have. The parameter minimumLength states how many charac-
ters have to be entered before the use can exit the mentry field.
The callBackFunction is where the use can swap out the key process-
ing element of the widget. The box parameter states whether the wid-
get 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 *activateCDKMentry (CDKMENTRY *mentry, chtype *actions);
This function activates the mentry widget and lets the user interact
with the widget. The parameter mentry is a pointer to a non-NULL
mentry 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 exitType is set
to vESCAPE_HIT.
char *injectCDKMentry (CDKMENTRY *mentry, chtype character);
This function injects a single character into the widget. The param-
eter mentry is a pointer to a non-NULL mentry. The parameter charac-
ter 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 mem-
ber exitType to vEARLY_EXIT and the function will return a NULL
pointer.
void setCDKMentry (CDKMENTRY *mentry, char *value, int minimumLength,
boolean box);
This function lets the programmer modify certain elements of an
already defined entry widget. The parameter names correspond to the
same parameter names listed in the newCDKMentry function.
void setCDKMentryValue (CDKMENTRY *mentry, char *value);
This sets the current value of the widget.
char *getCDKMentryValue (CDKMENTRY *mentry);
This returns the current value of the widget.
void setCDKMentryMin (CDKMENTRY *mentry, int maximum);
This sets the minimum length of the string that the widget will
allow.
int getCDKMentryMin (CDKMENTRY *mentry);
This returns the minimum length of a string the widget will allow.
void setCDKMentryFillerChar (CDKMENTRY *mentry, chtype filler);
This sets the character to use when drawing unused space in the
field.
chtype getCDKMentryFillerChar (CDKMENTRY *mentry);
This returns the character being used to draw unused space in the
widget.
void setCDKMentryBox (CDKMENTRY *mentry, boolean boxWidget);
This sets whether or not the widget will be draw with a box around
it.
boolean getCDKMentryBox (CDKMENTRY *mentry);
This returns whether or not the widget will be drawn with a box
around it.
void setCDKMentryULChar (CDKMENTRY *mentry, chtype character);
This function sets the upper left hand corner of the widgets box to
the given character.
void setCDKMentryURChar (CDKMENTRY *mentry, chtype character);
This function sets the upper right hand corner of the widgets box to
the given character.
void setCDKMentryLLChar (CDKMENTRY *mentry, chtype character);
This function sets the lower left hand corner of the widgets box to
the given character.
void setCDKMentryLRChar (CDKMENTRY *mentry, chtype character);
This function sets the lower right hand corner of the widgets box to
the given character.
void setCDKMentryVerticalChar (CDKMENTRY *mentry, chtype character);
This function sets the vertical drawing character for the box to the
given character.
void setCDKMentryHorizontalChar (CDKMENTRY *mentry, chtype character);
This function sets the horizontal drawing character for the box to
the given character.
void setCDKMentryBoxAttribute (CDKMENTRY *mentry, chtype attribute);
This function sets the attribute of the box.
void setCDKMentryBackgroundColor (CDKMENTRY *mentry, 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 setCDKMentryCB (CDKMENTRY *mentry, MENTRYCB callbackFunction);
This function allows the programmer to set a different widget input
handler. The parameter callbackFunction is of type MENTRYCB. The
current default function is CDKMentryCallBack.
void moveCDKMentry (CDKMENTRY *mentry, int xpos, int ypos, boolean rel-
ative, 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 pre-defined 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 positionCDKMentry (CDKMENTRY *mentry);
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 its 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 drawCDKMentry(CDKMENTRY *mentry, boolean box);
This function draws the widget on the screen. The box option
draws the widget with or without a box.
void eraseCDKMentry (CDKMENTRY *mentry);
This function removes the widget from the screen. This does
NOT destroy the widget.
void cleanCDKMentry (CDKMENTRY *mentry);
This function clears the information from the field.
void destroyCDKMentry (CDKMENTRY *mentry);
This function removes the widget from the screen and frees up
any memory the object may be using.
void setCDKMentryPreProcess (CDKMENTRY *mentry, PROCESSFN func-
tion, void *data);
This function allows the user to have the widget call a func-
tion 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 setCDKMentryPostProcess (CDKMENTRY *mentry, PROCESSFN func-
tion, void *data);
This function allows the user to have the widget call a func-
tion after the key has been applied to the widget. The param-
eter 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, char
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. The object parameter is the
pointer to the widget object. 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.
KEY BINDINGS
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 wid-
get.
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.
Up Arrow Moves the cursor one row down.
Down Arrow Moves the cursor one row up.
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 beginning of the entry field.
CTRL-E Moves the cursor to the end of the entry field.
CTRL-T Transposes the character 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.
SEE ALSO
cdk(3), cdk_binding(3), cdk_display(3), cdk_screen(3)
NOTES
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 com-
pile line to include the Ncurses header files instead.
24 April 1997 cdk_mentry(3)
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