https://invisible-island.net/cdk/manpage/
cdk_alphalist(3) Library calls cdk_alphalist(3)
cdk_alphalist - Cdk sorted list widget.
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
char *activateCDKAlphalist (
CDKALPHALIST *alphalist,
chtype *actions);
void destroyCDKAlphalist (
CDKALPHALIST *alphalist);
void drawCDKAlphalist (
CDKALPHALIST *alphalist,
boolean box);
void eraseCDKAlphalist (
CDKALPHALIST *alphalist);
boolean getCDKAlphalistBox (
CDKALPHALIST *alphalist);
char **getCDKAlphalistContents (
CDKALPHALIST *alphalist,
int *size);
int getCDKAlphalistCurrentItem (
CDKALPHALIST *widget);
chtype getCDKAlphalistFillerChar (
CDKALPHALIST *alphalist);
chtype getCDKAlphalistHighlight (
CDKALPHALIST *alphalist);
char *injectCDKAlphalist (
CDKALPHALIST *alphalist,
chtype input);
void moveCDKAlphalist (
CDKALPHALIST *alphalist,
int xpos,
int ypos,
boolean relative,
boolean refresh);
CDKALPHALIST *newCDKAlphalist (
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
int height,
int width,
const char * title,
const char * label,
CDK_CONST char ** list,
int listSize,
chtype fillerCharacter,
chtype highlight,
boolean box,
boolean shadow);
void positionCDKAlphalist (
CDKALPHALIST *alphalist);
void setCDKAlphalist (
CDKALPHALIST *alphalist,
CDK_CONST char ** list,
int listSize,
chtype fillerCharacter,
chtype highlight,
boolean box);
void setCDKAlphalistBackgroundAttrib (
CDKALPHALIST *alphalist,
chtype attribute);
void setCDKAlphalistBackgroundColor (
CDKALPHALIST *alphalist,
const char * color);
void setCDKAlphalistBox (
CDKALPHALIST *alphalist,
boolean box);
void setCDKAlphalistBoxAttribute (
CDKALPHALIST *alphalist,
chtype character);
void setCDKAlphalistContents (
CDKALPHALIST *alphalist,
CDK_CONST char ** list,
int listSize);
void setCDKAlphalistCurrentItem (
CDKALPHALIST *widget,
int item);
void setCDKAlphalistFillerChar (
CDKALPHALIST *alphalist,
chtype fillerCharacter);
void setCDKAlphalistHighlight (
CDKALPHALIST *alphalist,
chtype highlight);
void setCDKAlphalistHorizontalChar (
CDKALPHALIST *alphalist,
chtype character);
void setCDKAlphalistLLChar (
CDKALPHALIST *alphalist,
chtype character);
void setCDKAlphalistLRChar (
CDKALPHALIST *alphalist,
chtype character);
void setCDKAlphalistPostProcess (
CDKALPHALIST *alphalist,
PROCESSFN callback,
void * data);
void setCDKAlphalistPreProcess (
CDKALPHALIST *alphalist,
PROCESSFN callback,
void * data);
void setCDKAlphalistULChar (
CDKALPHALIST *alphalist,
chtype character);
void setCDKAlphalistURChar (
CDKALPHALIST *alphalist,
chtype character);
void setCDKAlphalistVerticalChar (
CDKALPHALIST *alphalist,
chtype character);
The Cdk alphalist allows a user to select from a list of alphabeti-
cally sorted words. The user can use the arrow keys to traverse
through the list or type in the beginning of the word and the list
will automatically adjust itself in the correct place in the
scrolling list. This widget, like the file selector widget, is a
compound widget of both the entry field widget and the scrolling list
widget.
activateCDKAlphalist
activates the alphalist widget and lets the user interact with
the widget.
o The parameter alphalist is a pointer to a non-NULL alphalist
widget.
o 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 then this
function will return a char * of the information which was typed
in the field.
If the TAB character is hit then the widget will try to complete
the word in the entry field.
If the widget is exited with the RETURN character then the wid-
get data exitType will be set to vNORMAL.
If the widget was exited with the ESCAPE key then the widget
data exitType will be set to vESCAPE_HIT and the widget returns
NULL.
destroyCDKAlphalist
removes the widget from the screen and frees memory the object
used.
drawCDKAlphalist
draws the alphalist widget on the screen.
If the box parameter is true, the widget is drawn with a box.
eraseCDKAlphalist
removes the widget from the screen. This does NOT destroy the
widget.
getCDKAlphalistBox
returns true if the widget will be drawn with a box around it.
getCDKAlphalistContents
returns the contents of the alphalist.
getCDKAlphalistCurrentItem
returns the current position in the scroll-widget.
getCDKAlphalistFillerChar
returns the character being used as the filler character in the
entry field portion of the widget.
getCDKAlphalistHighlight
returns the attribute of the highlight bar of the scrolling list
portion of the widget.
injectCDKAlphalist
injects a single character into the widget (actually the entry
widget).
o The parameter alphalist is a pointer to a non-NULL alphalist
widget.
o The parameter character is the character to inject into the
widget.
The return value and side-effect (setting the widget data exit-
Type) depend upon the injected character:
RETURN or TAB
the function returns the information in the entry field.
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 wid-
get data exitType is set to vEARLY_EXIT.
moveCDKAlphalist
moves the given widget to the given position.
o The parameters xpos and ypos are the new position of the
widget.
The parameter xpos may be an integer or one of the pre-de-
fined values TOP, BOTTOM, and CENTER.
The parameter ypos may be an integer, or one of the pre-de-
fined values LEFT, RIGHT, and CENTER.
o 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.
newCDKAlphalist
creates a pointer to an alphalist widget. Parameters:
o screen is the screen you wish this widget to be placed
in.
o xpos controls the placement of the object along the
horizontal axis. This parameter can take an integer or
one of the pre-defined values LEFT, RIGHT, and CENTER.
o ypos controls the placement of the object along the
vertical axis. This parameter may be an integer value,
or one of the pre-defined values TOP, BOTTOM, and CEN-
TER.
o height and width control the height and width of the
widget. If you provide a value of zero for either of
the height or the width, the widget will be created
with the full width and height of the screen. If you
provide a negative value, the widget will be created
the full height or width minus the value provided.
o title is the string which will be displayed at the top
of the scrolling list. The title can be more than one
line; just provide a carriage return character at the
line break.
o label is the string which will be displayed in the la-
bel of the entry field.
o list is the list of words which will be displayed in
the scrolling list. This list does not have to be
sorted, this widget automatically sorts the list (note
that it modifies the caller's copy of the list to do
this).
o listSize tells the widget how large the word list is.
o fillerCharacter is the character which is to be dis-
played in an empty space in the entry field.
o highlight is the attribute of the highlight bar in the
scrolling list.
o box is true if the widget should be drawn with a box
around it.
o shadow is true to turn the shadow on around this wid-
get.
If the widget could not be created then a NULL pointer is
returned.
positionCDKAlphalist
allows the user to move the widget around the screen via
the cursor/keypad keys. See cdk_position(3) for key bind-
ings.
setCDKAlphalist
lets the programmer modify certain elements of an existing
alphalist widget.
The parameter names correspond to the same parameter names
listed in the newCDKAlphalist function.
setCDKAlphalistBackgroundAttrib
sets the background attribute of the widget.
The parameter attribute is a curses attribute, e.g.,
A_BOLD.
setCDKAlphalistBackgroundColor
sets the background color of the widget.
The parameter color is in the format of the Cdk format
strings. See cdk_display(3).
setCDKAlphalistBox
sets whether the widget will be drawn with a box around it.
setCDKAlphalistBoxAttribute
sets the attribute of the box.
setCDKAlphalistContents
sets the contents of the alphalist widget (note that it
sorts the caller's copy of the list).
setCDKAlphalistCurrentItem
set the current position in the scroll-widget.
setCDKAlphalistFillerChar
sets the character to use when drawing the entry field por-
tion of the widget.
setCDKAlphalistHighlight
sets the attribute of the highlight bar of the scrolling
list portion of the widget.
setCDKAlphalistHorizontalChar
sets the horizontal drawing character for the box to the
given character.
setCDKAlphalistLLChar
sets the lower left hand corner of the widget's box to the
given character.
setCDKAlphalistLRChar
sets the lower right hand corner of the widget's box to the
given character.
setCDKAlphalistPostProcess
allows the user to have the widget call a function after
the key has been applied to the widget.
o The parameter function is the callback function.
o The parameter data points to data passed to the call-
back function.
To learn more about post-processing see cdk_process(3).
setCDKAlphalistPreProcess
allows the user to have the widget call a function after a
key is hit and before the key is applied to the widget.
o The parameter function is the callback function.
o The parameter data points to data passed to the call-
back function.
To learn more about pre-processing see cdk_process(3).
setCDKAlphalistULChar
sets the upper left hand corner of the widget's box to the
given character.
setCDKAlphalistURChar
sets the upper right hand corner of the widget's box to the
given character.
setCDKAlphalistVerticalChar
sets the vertical drawing character for the box to the
given character.
When the widget is activated there are several default key bindings
which will help the user enter or manipulate the information quickly.
Since this widget is built from both the scrolling list widget and
the entry field widget, the key bindings are the same for the respec-
tive fields. The extra key bindings are listed below.
+-----------------+-------------------------------------+
| Key | Action |
+-----------------+-------------------------------------+
+-----------------+-------------------------------------+
| Up Arrow | Scrolls the scrolling list up one |
| | line. |
+-----------------+-------------------------------------+
| Down Arrow | Scrolls the scrolling list down one |
| | line. |
+-----------------+-------------------------------------+
| Page Up | Scrolls the scrolling list up one |
| | page. |
+-----------------+-------------------------------------+
| CTRL-B | Scrolls the scrolling list up one |
| | page. Page Down/Scrolls the |
| | scrolling list down one page. |
+-----------------+-------------------------------------+
| CTRL-F | Scrolls the scrolling list down one |
| | page. |
+-----------------+-------------------------------------+
| Tab | Tries to complete the word in the |
| | entry field. If the word segment |
| | is not unique then the widget will |
| | beep and present a list of close |
| | matches. |
+-----------------+-------------------------------------+
| Return | Returns the word in the entry |
| | 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. |
+-----------------+-------------------------------------+
This widget is created from the scrolling list widget and the entry
field widget. This is a good example on how to build your own wid-
gets using the base widgets provided in this distribution.
cdk(3), cdk_binding(3), cdk_display(3), cdk_position(3),
cdk_screen(3)
2025-01-14 cdk_alphalist(3)