cdk_buttonbox(3)cdk_buttonbox(3)NAMEcdk_buttonbox - Creates a managed curses buttonbox widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
int activateCDKButtonbox (
CDKBUTTONBOX *buttonbox,
chtype * actions);
void destroyCDKButtonbox (
CDKBUTTONBOX *buttonbox);
void drawCDKButtonbox (
CDKBUTTONBOX *buttonbox,
boolean box);
void drawCDKButtonboxButtons (
CDKBUTTONBOX *buttonbox);
void eraseCDKButtonbox (
CDKBUTTONBOX *buttonbox);
boolean getCDKButtonboxBox (
CDKBUTTONBOX *buttonbox);
int getCDKButtonboxButtonCount (
CDKBUTTONBOX *buttonbox);
int getCDKButtonboxCurrentButton (
CDKBUTTONBOX *buttonbox);
chtype getCDKButtonboxHighlight (
CDKBUTTONBOX *buttonbox);
int injectCDKButtonbox (
CDKBUTTONBOX *buttonbox,
chtype input);
void moveCDKButtonbox (
CDKBUTTONBOX *buttonbox,
int xpos,
int ypos,
boolean relative,
boolean refresh);
CDKBUTTONBOX *newCDKButtonbox (
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
int height,
int width,
const char * title,
int rows,
int cols,
CDK_CONST char ** buttons,
int buttonCount,
chtype highlight,
boolean box,
boolean shadow);
void positionCDKButtonbox (
CDKBUTTONBOX *buttonbox);
void setCDKButtonbox (
CDKBUTTONBOX *buttonbox,
chtype highlight,
boolean box);
void setCDKButtonboxBackgroundAttrib (
CDKBUTTONBOX *buttonbox,
chtype attribute);
void setCDKButtonboxBackgroundColor (
CDKBUTTONBOX *buttonbox,
const char * color);
void setCDKButtonboxBox (
CDKBUTTONBOX *buttonbox,
boolean box);
void setCDKButtonboxBoxAttribute (
CDKBUTTONBOX *buttonbox,
chtype character);
void setCDKButtonboxCurrentButton (
CDKBUTTONBOX *buttonbox,
int button);
void setCDKButtonboxHighlight (
CDKBUTTONBOX *buttonbox,
chtype highlight);
void setCDKButtonboxHorizontalChar (
CDKBUTTONBOX *buttonbox,
chtype character);
void setCDKButtonboxLLChar (
CDKBUTTONBOX *buttonbox,
chtype character);
void setCDKButtonboxLRChar (
CDKBUTTONBOX *buttonbox,
chtype character);
void setCDKButtonboxPostProcess (
CDKBUTTONBOX *buttonbox,
PROCESSFN callback,
void * data);
void setCDKButtonboxPreProcess (
CDKBUTTONBOX *buttonbox,
PROCESSFN callback,
void * data);
void setCDKButtonboxULChar (
CDKBUTTONBOX *buttonbox,
chtype character);
void setCDKButtonboxURChar (
CDKBUTTONBOX *buttonbox,
chtype character);
void setCDKButtonboxVerticalChar (
CDKBUTTONBOX *buttonbox,
chtype character);
DESCRIPTION
The Cdk buttonbox widget creates a buttonbox box with a message and a
varied number of buttons to choose from. The following functions cre‐
ate or manipulate the Cdk buttonbox box widget.
AVAILABLE FUNCTIONS
activateCDKButtonbox
activates the buttonbox widget and lets the user interact with the
widget. The parameter buttonbox is a pointer to a non-NULL but‐
tonbox 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 value from 0 to the number
of buttons -1, representing the button selected. It will also set
the widget data exitType to vNORMAL. If the character entered
into this widget was ESCAPE then the widget will return a value of
-1 and the widget data exitType will be set to vESCAPE_HIT.
destroyCDKButtonbox
removes the widget from the screen and releases any memory the
object used.
drawCDKButtonbox
draws the buttonbox widget on the screen. If the box parameter is
true, the widget is drawn with a box.
drawCDKButtonboxButtons
draws the buttons.
eraseCDKButtonbox
removes the widget from the screen. This does NOT destroy the
widget.
getCDKButtonboxBox
returns true if the widget will be drawn with a box around it.
getCDKButtonboxButtonCount
returns the number of buttons in the button box.
getCDKButtonboxCurrentButton
returns the current button-number.
getCDKButtonboxHighlight
returns the highlight attribute of the widget.
injectCDKButtonbox
injects a single character into the widget. The parameter button‐
box is a pointer to a non-NULL buttonbox 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 value ranging from zero to one less
than the number of buttons, representing the button
selected. The widget data exitType is set to vNORMAL.
ESCAPE the function returns -1. vESCAPE_HIT. The widget data
exitType is set to vESCAPE_HIT.
Otherwise
unless modified by preprocessing, postprocessing or key
bindings, the function returns -1. The widget data exit‐
Type is set to vEARLY_EXIT.
moveCDKButtonbox
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 rela‐
tive 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.
newCDKButtonbox
creates a pointer to a buttonbox widget. 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 be an integer value or one of the pre-defined values TOP,
BOTTOM, and CENTER.
height and
width
control the height and width of the widget.
title
is the title of the widget.
rows is the number of rows of buttons.
cols sets the number of columns.
buttons
is an array containing the button labels.
buttonCount
is the number of elements in the buttons array.
highlight
is the attribute of the currently highlighted button.
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.
positionCDKButtonbox
allows the user to move the widget around the screen via the cur‐
sor/keypad keys. See cdk_position (3) for key bindings.
setCDKButtonbox
lets the programmer modify certain elements of an existing button‐
box widget. The parameter names correspond to the same parameter
names listed in the newCDKButtonbox function.
setCDKButtonboxBackgroundAttrib
sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
setCDKButtonboxBackgroundColor
sets the background color of the widget. The parameter color is
in the format of the Cdk format strings. (See cdk_display).
setCDKButtonboxBox
sets true if the widget will be drawn with a box around it.
setCDKButtonboxBoxAttribute
sets the attribute of the box.
setCDKButtonboxCurrentButton
sets the current button-number for the box.
setCDKButtonboxHighlight
sets the highlight attribute of the selected button.
setCDKButtonboxHorizontalChar
sets the horizontal drawing character for the box to the given
character.
setCDKButtonboxLLChar
sets the lower left hand corner of the widget's box to the given
character.
setCDKButtonboxLRChar
sets the lower right hand corner of the widget's box to the given
character.
setCDKButtonboxPostProcess
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. (See cdk_process).
setCDKButtonboxPreProcess
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. (See cdk_process).
setCDKButtonboxULChar
sets the upper left hand corner of the widget's box to the given
character.
setCDKButtonboxURChar
sets the upper right hand corner of the widget's box to the given
character.
setCDKButtonboxVerticalChar
sets the vertical drawing character for the box to the given char‐
acter.
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 │ Selects the button to the left of │
│ │ the current button. │
├────────────────────┼─────────────────────────────────────┤
│Right Arrow │ Selects the button to the right of │
│ │ the current button. │
├────────────────────┼─────────────────────────────────────┤
│Tab │ Selects the button to the right of │
│ │ the current button. │
├────────────────────┼─────────────────────────────────────┤
│Space │ Selects the button to the right of │
│ │ the current button. │
├────────────────────┼─────────────────────────────────────┤
│Return │ Exits the widget and returns the │
│ │ index of the selected button. This │
│ │ also sets the widget data exitType │
│ │ to vNORMAL. │
├────────────────────┼─────────────────────────────────────┤
│Tab │ Exits the widget and returns the │
│ │ index of the selected button. This │
│ │ also sets the widget data exitType │
│ │ to vNORMAL. │
├────────────────────┼─────────────────────────────────────┤
│Escape │ Exits the widget and returns -1. │
│ │ This also sets the widget data │
│ │ exitType to vESCAPE_HIT. │
├────────────────────┼─────────────────────────────────────┤
│Ctrl-L │ Refreshes the screen. │
└────────────────────┴─────────────────────────────────────┘
SEE ALSOcdk(3), cdk_binding(3), cdk_display(3), cdk_position(3),
cdk_process(3), cdk_screen(3)cdk_buttonbox(3)
