cdk_swindow 3
cdk_swindow(3) cdk_swindow(3)
NAME
cdk_swindow - a curses scrolling window widget.
SYNOPSIS
cc [ flag ... ] file ... -lcdk [ library ... ]
#include <cdk.h>
void activateCDKSwindow (
CDKSWINDOW *swindow,
chtype * actions);
void addCDKSwindow (
CDKSWINDOW *swindow,
const char *info,
int insertPosition);
void cleanCDKSwindow (
CDKSWINDOW *swindow);
int execCDKSwindow (
CDKSWINDOW *swindow,
const char * command,
int insertPosition);
void destroyCDKSwindow (
CDKSWINDOW *swindow);
void drawCDKSwindow (
CDKSWINDOW *swindow,
boolean box);
void dumpCDKSwindow (
CDKSWINDOW *swindow,
const char *filename);
void eraseCDKSwindow (
CDKSWINDOW *swindow);
void execCDKSwindow (
CDKSWINDOW *swindow,
char *command,
int insertPosition);
boolean getCDKSwindowBox (
CDKSWINDOW *swindow);
chtype **getCDKSwindowContents (
CDKSWINDOW *swindow);
int injectCDKSwindow (
CDKSWINDOW *swindow,
chtype input);
void jumpToLineCDKSwindow (
CDKSWINDOW *swindow,
int line);
void loadCDKSwindowInformation (
CDKSWINDOW *swindow);
void moveCDKSwindow (
CDKSWINDOW *swindow,
int xpos,
int ypos,
boolean relative,
boolean refresh);
CDKSWINDOW *newCDKSwindow (
CDKSCREEN *cdkscreen,
int xpos,
int ypos,
int height,
int width,
const char *title,
int saveLines,
boolean box,
boolean shadow);
void positionCDKSwindow (
CDKSWINDOW *swindow);
void saveCDKSwindowInformation (
CDKSWINDOW *swindow);
void setCDKSwindow (
CDKSWINDOW *swindow,
CDK_CONST char **info,
int lines,
boolean box);
void setCDKSwindowBackgroundAttrib (
CDKSWINDOW *swindow,
chtype attribute);
void setCDKSwindowBackgroundColor (
CDKSWINDOW *swindow,
const char * color);
void setCDKSwindowBox (
CDKSWINDOW *swindow,
boolean boxWidget);
void setCDKSwindowBoxAttribute (
CDKSWINDOW *swindow,
chtype character);
void setCDKSwindowContents (
CDKSWINDOW *swindow,
char **info,
int lines);
void setCDKSwindowHorizontalChar (
CDKSWINDOW *swindow,
chtype character);
void setCDKSwindowLLChar (
CDKSWINDOW *swindow,
chtype character);
void setCDKSwindowLRChar (
CDKSWINDOW *swindow,
chtype character);
void setCDKSwindowPostProcess (
CDKSWINDOW *swindow,
PROCESSFN callback,
void * data);
void setCDKSwindowPreProcess (
CDKSWINDOW *swindow,
PROCESSFN callback,
void * data);
void setCDKSwindowULChar (
CDKSWINDOW *swindow,
chtype character);
void setCDKSwindowURChar (
CDKSWINDOW *swindow,
chtype character);
void setCDKSwindowVerticalChar (
CDKSWINDOW *swindow,
chtype character);
void trimCDKSwindow (
CDKSWINDOW *swindow,
int start,
int finish);
DESCRIPTION
The Cdk scrolling window (swindow) widget can be used to display mes-
sages. The following functions create or manipulate the Cdk swindow
box widget.
AVAILABLE FUNCTIONS
activateCDKSwindow
function activates the swindow widget and lets the user interact
with the widget. The parameter swindow is a pointer to a non-
NULL swindow 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 1. It
will also set the widget data exitType to vNORMAL. If the char-
acter 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.
addCDKSwindow
adds information to a scrolling window. The information is sup-
plied by the info parameter. The information is immediately
added to the scrolling window. The position of the new informa-
tion is governed by the value of the parameter insertPosition.
This parameter may be two values: TOP or BOTTOM.
cleanCDKSwindow
clears the information from the window.
destroyCDKSwindow
removes the widget from the screen and frees memory the object
used.
drawCDKSwindow
draws the swindow widget on the screen. If the box parameter is
true, the widget is drawn with a box.
dumpCDKSwindow
saves the contents of the scrolling window into the file speci-
fied by the filename parameter. It returns -1 on failure, and
the number of lines saved if the dump was successful.
eraseCDKSwindow
removes the widget from the screen. This does NOT destroy the
widget.
execCDKSwindow
allows the user to execute a shell command and have the output
of the shell command direct itself to the scrolling window. The
command parameter is the command to execute. The insertPosition
parameter tells where the output will be inserted within the
scrolling window.
getCDKSwindowBox
returns true if the widget will be drawn with a box around it.
getCDKSwindowContents
returns the contents of the scrolling window. The parameter
lines will be set to the number of lines returned.
injectCDKSwindow
injects a single character into the widget. The parameter swin-
dow is a pointer to a non-NULL swindow 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 1. The widget data exitType is set
to vNORMAL.
ESCAPE the function returns -1. 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.
jumpToLineCDKSwindow
moves the scrolling window to the given line. The parameter
line may be an integer or one of the two predefined values TOP
and BOTTOM.
loadCDKSwindowInformation
allows the user to load the contents of a file into the
scrolling window. This function is interactive, and will ask
for a filename.
moveCDKSwindow
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 parame-
ter 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.
newCDKSwindow
creates a swindow widget and returns a pointer to it. Parame-
ters:
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 val-
ues 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.
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.
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.
saveLines
is the number of lines to save before throwing information
away.
box is true if the widget should be drawn with a box around it.
The shadow
turns the shadow on or off around this widget.
If the widget could not be created then a NULL pointer is
returned.
positionCDKSwindow
allows the user to move the widget around the screen via the
cursor/keypad keys. See cdk_position (3) for key bindings.
saveCDKSwindowInformation
allows the user to save the contents of the scrolling window
into a file. This function is interactive, and will ask for a
filename.
setCDKSwindow
lets the programmer modify certain elements of an existing swin-
dow widget. The parameter info is a char ** of the information
to set in the scrolling window; lines is the number of lines
being added. The other parameter names correspond to the same
parameter names listed in the newCDKSwindow function.
setCDKSwindowBackgroundAttrib
sets the background attribute of the widget. The parameter
attribute is a curses attribute, e.g., A_BOLD.
setCDKSwindowBackgroundColor
sets the background color of the widget. The parameter color is
in the format of the Cdk format strings. See cdk_display (3).
setCDKSwindowBox
sets whether the widget will be drawn with a box around it.
setCDKSwindowBoxAttribute
sets the attribute of the box.
setCDKSwindowContents
lets the programmer modify certain elements of an existing swin-
dow widget. The parameter info is a char ** of the information
to set in the scrolling window; lines is the number of lines
being added.
setCDKSwindowHorizontalChar
sets the horizontal drawing character for the box to the given
character.
setCDKSwindowLLChar
sets the lower left hand corner of the widget's box to the given
character.
setCDKSwindowLRChar
sets the lower right hand corner of the widget's box to the
given character.
setCDKSwindowPostProcess
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).
setCDKSwindowPreProcess
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 parame-
ter 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).
setCDKSwindowULChar
sets the upper left hand corner of the widget's box to the given
character.
setCDKSwindowURChar
sets the upper right hand corner of the widget's box to the
given character.
setCDKSwindowVerticalChar
sets the vertical drawing character for the box to the given
character.
trimCDKSwindow
removes information from a scrolling window. The parameters
start and end state where to start cutting from and where to
stop. The first element in the scrolling window starts at index
0.
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 Scrolls the window left one column. |
|Right Arrow Scrolls the window right one column. |
|Up Arrow Scrolls the window up one row. |
|Down Arrow Scrolls the window down one row. |
+------------------------------------------------------------+
|Prev Page |
|Ctrl-B |
|b |
|B Scroll the window backward one page. |
+------------------------------------------------------------+
|Next Page |
|Ctrl-F |
|Space |
|f |
|F Scroll the window forward one page. |
+------------------------------------------------------------+
|Home |
|| Scroll the list to the left margin. |
+------------------------------------------------------------+
|End |
|$ Scroll the list to the right margin. |
+------------------------------------------------------------+
|1 |
|< |
|g Move to the top of the scrolling window. |
|> |
|G Move to the bottom of the scrolling window. |
+------------------------------------------------------------+
|l |
|L Load a file into the scrolling window. |
+------------------------------------------------------------+
|s |
|S Save the contents of the scrolling window |
| into a file. |
+------------------------------------------------------------+
|Return Set the widget's exitType to vNORMAL, exit |
| the widget and return 1. |
|Tab Set the widget's exitType to vNORMAL, exit |
| the widget and return 1. |
|Escape Set the widget's exitType to vESCAPE_HIT, |
| exit the widget and return -1. |
|Ctrl-L Refreshes the screen. |
+------------------------------------------------------------+
+------------------------------------------------------------+
SEE ALSO
cdk(3), cdk_binding(3), cdk_display(3), cdk_position(3),
cdk_screen(3)
cdk_swindow(3)
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