cdk_template(3)cdk_template(3)NAMEcdk_template - a curses template widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
char *activateCDKTemplate (
CDKTEMPLATE *template,
chtype * actions);
void cleanCDKTemplate (
CDKTEMPLATE *template);
void destroyCDKTemplate (
CDKTEMPLATE *template);
void drawCDKTemplate (
CDKTEMPLATE *template,
boolean box);
void eraseCDKTemplate (
CDKTEMPLATE *template);
boolean getCDKTemplateBox (
CDKTEMPLATE *template);
int getCDKTemplateMin (
CDKTEMPLATE *template);
char *getCDKTemplateValue (
CDKTEMPLATE *template);
char *injectCDKTemplate (
CDKTEMPLATE *template,
chtype input);
char *mixCDKTemplate (
CDKTEMPLATE *template);
void moveCDKTemplate (
CDKTEMPLATE *template,
int xpos,
int ypos,
boolean relative,
boolean refresh);
CDKTEMPLATE *newCDKTemplate (
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
const char *title,
const char *label,
const char *plate,
const char *overlay,
boolean box,
boolean shadow);
void positionCDKTemplate (
CDKTEMPLATE *template);
void setCDKTemplate (
CDKTEMPLATE *template,
const char *value,
boolean box);
void setCDKTemplateBackgroundAttrib (
CDKTEMPLATE *template,
chtype attribute);
void setCDKTemplateBackgroundColor (
CDKTEMPLATE *template,
const char * color);
void setCDKTemplateBox (
CDKTEMPLATE *template,
boolean box);
void setCDKTemplateBoxAttribute (
CDKTEMPLATE *template,
chtype character);
void setCDKTemplateCB (
CDKTEMPLATE *template,
TEMPLATECB callbackFunction);
void setCDKTemplateHorizontalChar (
CDKTEMPLATE *template,
chtype character);
void setCDKTemplateLLChar (
CDKTEMPLATE *template,
chtype character);
void setCDKTemplateLRChar (
CDKTEMPLATE *template,
chtype character);
void setCDKTemplateMin (
CDKTEMPLATE *template,
int minimum);
void setCDKTemplatePostProcess (
CDKTEMPLATE *template,
PROCESSFN callback,
void * data);
void setCDKTemplatePreProcess (
CDKTEMPLATE *template,
PROCESSFN callback,
void * data);
void setCDKTemplateULChar (
CDKTEMPLATE *template,
chtype character);
void setCDKTemplateURChar (
CDKTEMPLATE *template,
chtype character);
void setCDKTemplateValue (
CDKTEMPLATE *template,
const char *value);
void setCDKTemplateVerticalChar (
CDKTEMPLATE *template,
chtype character);
char *unmixCDKTemplate (
CDKTEMPLATE *template,
const char *string);
DESCRIPTION
The Cdk template widget creates a template widget which allows a user
to type information into an entry field with a pre-set field format.
Typical uses for this widget would be a date field or a time field.
The following are functions which create or manipulate the Cdk template
box widget.
AVAILABLE FUNCTIONS
activateCDKTemplate
activates the template widget and lets the user interact with the
widget. The parameter template is a pointer to a non-NULL tem‐
plate widget. If the actions parameter is passed with a non-NULL
value, the characters in the array will be injected into the wid‐
get. 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.
cleanCDKTemplate
clears the information from the field.
destroyCDKTemplate
removes the widget from the screen and frees any memory the object
used.
drawCDKTemplate
draws the template widget on the screen. If box is true, the wid‐
get is drawn with a box.
eraseCDKTemplate
removes the widget from the screen. This does NOT destroy the
widget.
getCDKTemplateBox
returns true if the widget will be drawn with a box around it.
getCDKTemplateMin
returns the minimum characters that must be entered before the
widget will exit.
getCDKTemplateValue
returns the current value of the widget.
injectCDKTemplate
injects a single character into the widget. The parameter tem‐
plate is a pointer to a non-NULL template widget. 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 exit‐
Type 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.
mixCDKTemplate
returns a char* pointer to the field value and the plate.
moveCDKTemplate
moves the given widget to the given position. The parameters xpos
and ypos are the new position of the widget. The parameter xpos
is an integer or one of the predefined 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 abso‐
lute 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 hap‐
pen). The final parameter refresh is a boolean value which states
whether the widget will be repainted after the move.
newCDKTemplate
creates a template widget, returning 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 to display 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 to display in the label of the template field.
plate
defines the character to allow at each position in the tem‐
plate field. This is done by creating a character plate by
using special format character to tell the template widget
what type of character is allowed where in the template wid‐
get. The following table lists the format types.
Plate_Character Effect
──────────────────────────────────────────────────────
# Accepts an integer.
A Accepts an alphabetic value.
C Accepts an alphabetic value. Auto‐
matically converts the character to
upper case.
c Accepts an alphabetic value. Auto‐
matically converts the character to
lower case.
M Accepts alphanumeric characters.
X Accepts alphanumeric characters.
Automatically converts the charac‐
ter to upper case.
x Accepts alphanumeric characters.
Automatically converts the charac‐
ter to upper case.
Anything else Ignored and assumed a non-editable
position.
──────────────────────────────────────────────────────
overlay
is the overlay of the template field. If the field needs
some sort of overlay, this parameter supplies this. A date
field could have YY/MM/DD, the overlay parameter would dis‐
play YY/MM/DD on an empty template field.
box is true if the 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.
positionCDKTemplate
allows the user to move the widget around the screen via the sin‐
gle keystroke commands. See cdk_position (3) for key bindings.
setCDKTemplate
lets the programmer modify certain elements of an existing tem‐
plate widget. The parameter names correspond to the same parame‐
ter names listed in the newCDKTemplate function.
setCDKTemplateBackgroundAttrib
sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
setCDKTemplateBackgroundColor
sets the background color of the widget. The parameter color is
in the format of the Cdk format strings. For more information,
see the cdk_display (3).
setCDKTemplateBox
sets a flag, true if the widget will be drawn with a box around
it.
setCDKTemplateBoxAttribute
sets the attribute of the box.
setCDKTemplateCB
allows the programmer to set a different widget input handler.
The parameter callbackFunction is of type TEMPLATECB. The default
input handler is CDKTemplateCallBack.
setCDKTemplateHorizontalChar
sets the horizontal drawing character for the box to the given
character.
setCDKTemplateLLChar
sets the lower left hand corner of the widget's box to the given
character.
setCDKTemplateLRChar
sets the lower right hand corner of the widget's box to the given
character.
setCDKTemplateMin
sets the minimum number of characters that must be entered before
the widget will exit.
setCDKTemplatePostProcess
allows the user to have the widget call a function after the key
has been applied to the widget. To learn more about post-process‐
ing see cdk_process (3).
setCDKTemplatePreProcess
allows the user to have the widget call a function after a key is
hit and before the key is applied to the widget. To learn more
about preprocessing see cdk_process (3).
setCDKTemplateULChar
sets the upper left hand corner of the widget's box to the given
character.
setCDKTemplateURChar
sets the upper right hand corner of the widget's box to the given
character.
setCDKTemplateValue
sets a value in the widget.
setCDKTemplateVerticalChar
sets the vertical drawing character for the box to the given char‐
acter.
unmixCDKTemplate
returns a char* pointer to the field value without any plate char‐
acters.
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 │
├────────────────┼─────────────────────────────────────┤
├────────────────┼─────────────────────────────────────┤
│Delete │ Deletes the character at the cur‐ │
│ │ sor. │
├────────────────┼─────────────────────────────────────┤
│Backspace │ Deletes the character before cur‐ │
│ │ sor, moves cursor left. │
├────────────────┼─────────────────────────────────────┤
│Ctrl-P │ Pastes whatever is in the paste │
│ │ buffer, into the widget. │
├────────────────┼─────────────────────────────────────┤
│Ctrl-K │ Cuts the contents from the widget │
│ │ and saves a copy in the paste buf‐ │
│ │ fer. │
├────────────────┼─────────────────────────────────────┤
│Ctrl-T │ Copies the contents of the widget │
│ │ into the paste buffer. │
├────────────────┼─────────────────────────────────────┤
│Ctrl-E │ Erases the contents of the widget. │
├────────────────┼─────────────────────────────────────┤
│Return │ Exits the widget and returns a │
│ │ char* representing the information │
│ │ which was typed into the field. It │
│ │ also sets the widget data exitType │
│ │ 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 │
│ │ 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 ALSOcdk(3), cdk_binding(3), cdk_display(3), cdk_screen(3)cdk_template(3)
