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cdk_buttonbox(3)
Contents
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newCDKButtonbox, activateCDKButtonbox, injectCDKButtonbox,
drawCDKButtonbox, setCDKButtonbox, setCDKButtonboxHighlight,
getCDKButtonboxHighlight, setCDKButtonboxBox,
getCDKButtonboxBox, setCDKButtonboxULChar, setCDKButtonboxURChar,
setCDKButtonboxLLChar, setCDKButtonboxLRChar,
setCDKButtonboxVerticalChar, setCDKButtonboxHorizontalChar,
setCDKButtonboxBoxAttribute, setCDKButtonboxBackgroundColor,
eraseCDKButtonbox, destroyCDKButtonbox,
setCDKButtonboxPreProcess, setCDKButtonboxPostProcess -
Creates a managed curses buttonbox widget.
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
CDKBUTTONBOX *newCDKButtonbox (CDKSCREEN *cdkscreen, int
xpos, int ypos, int height, int width, char ** title, int
rows, int cols, char ** buttons, int buttonCount, chtype
highlight, boolean box, boolean shadow);
int activateCDKButtonbox (CDKBUTTONBOX *buttonbox, chtype
* actions);
int injectCDKButtonbox (CDKBUTTONBOX *buttonbox, chtype
input);
void setCDKButtonbox (CDKBUTTONBOX *buttonbox, chtype
highlight, boolean box);
void setCDKButtonboxHighlight (CDKBUTTONBOX *buttonbox,
chtype highlight);
chtype getCDKButtonboxHighlight (CDKBUTTONBOX *buttonbox);
void setCDKButtonboxBox (CDKBUTTONBOX *buttonbox, boolean
box);
boolean getCDKButtonboxBox (CDKBUTTONBOX *buttonbox);
void setCDKButtonboxULChar (CDKBUTTONBOX *,buttonbox,
chtype character);
void setCDKButtonboxURChar (CDKBUTTONBOX *,buttonbox,
chtype character);
void setCDKButtonboxLLChar (CDKBUTTONBOX *,buttonbox,
chtype character);
void setCDKButtonboxLRChar (CDKBUTTONBOX *,buttonbox,
chtype character);
void setCDKButtonboxVerticalChar (CDKBUTTONBOX *,button-
box, chtype character);
void setCDKButtonboxHorizontalChar (CDKBUTTONBOX *,button-
box, chtype character);
void setCDKButtonboxBoxAttribute (CDKBUTTONBOX *,button-
box, chtype character);
void setCDKButtonboxBackgroundColor (CDKBUTTONBOX *,but-
tonbox, char * color);
void moveCDKButtonbox (CDKBUTTONBOX *buttonbox, int box,
int box, boolean relative, boolean refresh);
void positionCDKButtonbox (CDKBUTTONBOX *buttonbox);
void drawCDKButtonbox (CDKBUTTONBOX *buttonbox, boolean
box);
void eraseCDKButtonbox (CDKBUTTONBOX *buttonbox);
void setCDKButtonboxPreProcess (CDKBUTTONBOX *buttonbox,
PROCESSFN callback, void * data);
void setCDKButtonboxPostProcess (CDKBUTTONBOX *buttonbox,
PROCESSFN callback, void * data);
void destroyCDKButtonbox (CDKBUTTONBOX *buttonbox);
void bindCDKObject (EObjectType widgetType, void * object,
chtype key, BINDFN function, void * data);
The Cdk buttonbox widget creates a buttonbox box with a
message and a varied number of buttons to choose from. The
following are functions which create or manipulate the Cdk
buttonbox box widget.
CDKBUTTONBOX *newCDKButtonbox (CDKSCREEN *screen, int
xpos, int ypos, char **title , int rows, int cols, char
**buttons, int buttonCount, chtype highLight, boolean box,
boolean shadow);
This function creates a pointer to a buttonbox 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 accepts an integer value or one of the predefined
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 height and width parameters control
the height and width of the widget. The parameter title
is the title of the widget. The rows parameter states
how many rows of buttons there will be; of columns.
The buttons array contains a list of all the buttons;
while buttonCount is the number of elements in the but-
ton array. highlight is the attribute of the currently
highlighted button. 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.
int activateCDKButtonbox (CDKBUTTONBOX *buttonbox, chtype
*actions);
This function activates the buttonbox widget and lets
the user interact with the widget. The parameter but-
tonbox is a pointer to a non-NULL buttonbox 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 value from 0 to the number of buttons -1, representing
the button selected. It will also set the
structure member exitType to vNORMAL. If the character
entered into this widget was ESCAPE then the widget
will return a value of -1 and the structure member
exitType will be set to vESCAPE_HIT.
int injectCDKButtonbox (CDKBUTTONBOX *buttonbox, chtype
character);
This function injects a single character into the widget.
The parameter buttonbox is a pointer to a non-NULL
buttonbox widget. The parameter character is the character
to inject into the widget. If the character
injected into this widget was RETURN then the character
injected 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 structure member exitType to vNORMAL. If
the character entered into this widget was ESCAPE then
the widget will return a value of -1 and the structure
member exitType will be set to vESCAPE_HIT. Any other
character injected into the widget will set the structure
member exitType to vEARLY_EXIT and the function
will return -1.
void setCDKButtonbox (CDKBUTTONBOX *buttonbox, chtype
highlight, boolean box);
This function lets the programmer modify certain elements
of an already defined buttonbox widget. The
parameter names correspond to the same parameter names
listed in the newCDKButtonbox function.
void setCDKButtonboxHighlight (CDKBUTTONBOX *buttonbox,
chtype highlight);
This sets the highlight attribute of the selected button.
chtype getCDKButtonboxHighlight (CDKBUTTONBOX *buttonbox);
This returns the highlight attribute of the widget.
void setCDKButtonboxBox (CDKBUTTONBOX *buttonbox, boolean
boxWidget);
This sets whether or not the widget will be draw with a
box around it.
boolean getCDKButtonboxBox (CDKBUTTONBOX *buttonbox);
This returns whether or not the widget will be drawn
with a box around it.
void setCDKButtonboxULChar (CDKBUTTONBOX *buttonbox,
chtype character);
This function sets the upper left hand corner of the
widgets box to the given character.
void setCDKButtonboxURChar (CDKBUTTONBOX *buttonbox,
chtype character);
This function sets the upper right hand corner of the
widgets box to the given character.
void setCDKButtonboxLLChar (CDKBUTTONBOX *buttonbox,
chtype character);
This function sets the lower left hand corner of the
widgets box to the given character.
void setCDKButtonboxLRChar (CDKBUTTONBOX *buttonbox,
chtype character);
This function sets the lower right hand corner of the
widgets box to the given character.
void setCDKButtonboxVerticalChar (CDKBUTTONBOX *buttonbox,
chtype character);
This function sets the vertical drawing character for
the box to the given character.
void setCDKButtonboxHorizontalChar (CDKBUTTONBOX *button-
box, chtype character);
This function sets the horizontal drawing character for
the box to the given character.
void setCDKButtonboxBoxAttribute (CDKBUTTONBOX *buttonbox,
chtype attribute);
This function sets the attribute of the box.
void setCDKButtonboxBackgroundColor (CDKBUTTONBOX *button-
box, 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_dis-
play manual page.
void moveCDKButtonbox (CDKBUTTONBOX *buttonbox, 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 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 positionCDKButtonbox (CDKBUTTONBOX *buttonbox);
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 drawCDKButtonbox (CDKBUTTONBOX *buttonbox,
boolean box);
This function draws the buttonbox widget on the
screen. The box option draws the widget with or
without a box.
void eraseCDKButtonbox (CDKBUTTONBOX *buttonbox);
This function removes the widget from the screen.
This does NOT destroy the widget.
void destroyCDKButtonbox (CDKBUTTONBOX *buttonbox);
This function removes the widget from the screen
and frees up any memory the object may be using.
void setCDKButtonboxPreProcess (CDKBUTTONBOX *but-
tonbox, 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 func-
tion 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 setCDKButtonboxPostProcess (CDKBUTTONBOX *but-
tonbox, 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 EOb-
jectType 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 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 an integer value
representing which button was selected. This also sets
the structure member exitType in the widget pointer
to the value of vNORMAL.
Tab Exits the widget and returns an integer value representing
which button was selected. This also sets the structure
member exitType in the widget pointer to the value
of vNORMAL.
Escape Exits the widget and returns -1. This 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_buttonbox(3)
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