NAME
cdk_mentry - curses multiple line entry widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk/cdk.h>
char *activateCDKMentry (
CDKMENTRY *mentry,
chtype *actions);
void cleanCDKMentry (
CDKMENTRY *mentry);
void destroyCDKMentry (
CDKMENTRY *mentry);
void drawCDKMentry (
CDKMENTRY *mentry,
boolean box);
void drawCDKMentryField (
CDKMENTRY *mentry);
void eraseCDKMentry (
CDKMENTRY *mentry);
boolean getCDKMentryBox (
CDKMENTRY *mentry);
chtype getCDKMentryFillerChar (
CDKMENTRY *mentry);
chtype getCDKMentryHiddenChar (
CDKMENTRY *mentry);
int getCDKMentryMin (
CDKMENTRY *mentry);
char *getCDKMentryValue (
CDKMENTRY *mentry);
char *injectCDKMentry (
CDKMENTRY *mentry,
chtype input);
void moveCDKMentry (
CDKMENTRY *mentry,
int xpos,
int ypos,
boolean relative,
boolean refresh);
CDKMENTRY *newCDKMentry (
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
char *title,
char *label,
chtype fieldAttribute,
chtype fillerCharacter,
EDisplayType displayType,
int fieldWidth,
int fieldRows,
int logicalRows,
int minimumLength,
boolean box,
boolean shadow);
void positionCDKMentry (
CDKMENTRY *mentry);
void setCDKMentry (
CDKMENTRY *mentry,
char *value,
int minimumLength,
boolean box);
void setCDKMentryBackgroundAttrib (
CDKMENTRY *mentry,
chtype attribute);
void setCDKMentryBackgroundColor (
CDKMENTRY *mentry,
char * color);
void setCDKMentryBox (
CDKMENTRY *mentry,
boolean boxWidget);
void setCDKMentryBoxAttribute (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryCB (
CDKMENTRY *mentry,
MENTRYCB callBackFunction);
void setCDKMentryFillerChar (
CDKMENTRY *mentry,
chtype filler);
void setCDKMentryHiddenChar (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryHorizontalChar (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryLLChar (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryLRChar (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryMin (
CDKMENTRY *mentry,
int maximum);
void setCDKMentryPostProcess (
CDKMENTRY *mentry,
PROCESSFN callback,
void * data);
void setCDKMentryPreProcess (
CDKMENTRY *mentry,
PROCESSFN callback,
void * data);
void setCDKMentryULChar (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryURChar (
CDKMENTRY *mentry,
chtype character);
void setCDKMentryValue (
CDKMENTRY *mentry,
char *value);
void setCDKMentryVerticalChar (
CDKMENTRY *mentry,
chtype character);
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
manipulate the Cdk mentry box widget.
AVAILABLE FUNCTIONS
activateCDKMentry
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 widget data exitType
will be set to vNORMAL. If the character entered was ESCAPE then
the function will return NULL pointer and the widget data exitType
is set to vESCAPE_HIT.
cleanCDKMentry
clears the information from the field.
destroyCDKMentry
removes the widget from the screen and frees memory the object
used.
drawCDKMentry
draws the widget on the screen. If the box parameter is true, the
widget is drawn with a box.
drawCDKMentryField
redraws the multiple line entry field.
eraseCDKMentry
removes the widget from the screen. This does NOT destroy the
widget.
getCDKMentryBox
returns true if the widget will be drawn with a box around it.
getCDKMentryFillerChar
returns the character being used to draw unused space in the
widget.
getCDKMentryHiddenChar
returns the character being used to draw hidden characters in the
widget (obsolete).
getCDKMentryMin
returns the minimum length of a string the widget will allow.
getCDKMentryValue
returns the current value of the widget.
injectCDKMentry
injects a single character into the widget. The parameter mentry
is a pointer to a non-NULL mentry. The parameter character is the
character to inject into the widget. The return value and side-
effect (setting the widget data exitType) depend upon the injected
character:
RETURN or TAB
the function returns a char * representing the information
typed into the widget. The widget data exitType is set to
vNORMAL.
ESCAPE the function returns a NULL pointer. The widget data
exitType is set to vESCAPE_HIT.
Otherwise
unless modified by preprocessing, postprocessing or key
bindings, the function returns a NULL pointer. The widget
data exitType is set to vEARLY_EXIT.
moveCDKMentry
moves the given widget to the given position. The parameters xpos
and ypos are the new position of the widget. The parameter xpos
may be an integer or one of the pre-defined values TOP, BOTTOM,
and CENTER. The parameter ypos may be an integer or one of the
pre-defined values 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 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.
newCDKMentry
creates a mentry widget and returns a pointer to it. Parameters:
screen
is the screen you wish this widget to be placed in.
xpos controls the placement of the object along the horizontal
axis. It may be an integer or one of the pre-defined values
LEFT, RIGHT, and CENTER.
ypos controls the placement of the object along the vertical axis.
It may be an integer or one of the pre-defined values TOP,
BOTTOM, and CENTER.
title
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.
label
is the string which will be displayed in the label of the
mentry field.
fieldAttribute
is the attribute of the characters to be displayed when they
are typed in.
filler
is the character which is to display in an empty space in the
mentry field.
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.
---------------------------------------------------
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.
logicalRows
is the number of rows for the mentry field.
minimumLength
is the number of characters which must be entered before the
use can exit the mentry field.
callBackFunction
allows the user to override the key processing element of the
widget.
box is true if widget should be drawn with a box around it.
shadow
turns the shadow on or off around this widget.
If the widget could not be created then a NULL pointer is
returned.
positionCDKMentry
allows the user to move the widget around the screen via the
cursor/keypad keys. See cdk_position (3) for key bindings.
setCDKMentry
lets the programmer modify certain elements of an existing entry
widget. The parameter names correspond to the same parameter
names listed in the newCDKMentry function.
setCDKMentryBackgroundAttrib
sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
setCDKMentryBackgroundColor
sets the background color of the widget. The parameter color is
in the format of the Cdk format strings. See cdk_display (3).
setCDKMentryBox
sets whether the widget will be drawn with a box around it.
setCDKMentryBoxAttribute
function sets the attribute of the box.
setCDKMentryCB
function allows the programmer to set a different widget input
handler. The parameter callbackFunction is of type MENTRYCB. The
default function is CDKMentryCallBack.
setCDKMentryFillerChar
sets the character to use when drawing unused space in the field.
setCDKMentryHiddenChar
sets the character to use when a hidden character type is used
(obsolete).
setCDKMentryHorizontalChar
function sets the horizontal drawing character for the box to the
given character.
setCDKMentryLLChar
function sets the lower left hand corner of the widget’s box to
the given character.
setCDKMentryLRChar
function sets the lower right hand corner of the widget’s box to
the given character.
setCDKMentryMin
sets the minimum length of the string that the widget will allow.
setCDKMentryPostProcess
allows the user to have the widget call a function after the key
has been applied to the widget. The parameter function is the
callback function. The parameter data points to data passed to
the callback function. To learn more about post-processing see
cdk_process (3).
setCDKMentryPreProcess
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 is the callback function. The parameter data points to
data passed to the callback function. To learn more about pre-
processing see cdk_process (3).
setCDKMentryULChar
sets the upper left hand corner of the widget’s box to the given
character.
setCDKMentryURChar
sets the upper right hand corner of the widget’s box to the given
character.
setCDKMentryValue
sets the current value of the widget.
setCDKMentryVerticalChar
sets the vertical drawing character for the box to the given
character.
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
widget.
+----------------------------------------------------------------------+
|Key Action |
+----------------------------------------------------------------------+
|Left Arrow Moves the cursor to the left. |
|CTRL-B Moves the cursor to the left. |
|Right Arrow Moves the cursor to the right. |
|CTRL-F Moves the cursor to the right. |
|Up Arrow Moves the cursor one row down. |
|Down Arrow Moves the cursor one row up. |
|Delete Deletes the character at the cursor. |
|Backspace Deletes the character before cursor, moves cursor left. |
|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 widget data 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 widget data exitType in the widget pointer to |
| vNORMAL. |
|Escape Exits the widget and returns a NULL pointer. It also |
| sets the widget data exitType to vESCAPE_HIT. |
|Ctrl-L Refreshes the screen. |
+----------------------------------------------------------------------+
SEE ALSO
cdk(3), cdk_binding(3), cdk_display(3), cdk_position(3), cdk_screen(3)
cdk_mentry(3)