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cdk_template(3) |
FreeBSD Library Functions Manual |
cdk_template(3) |
cdk_template - a curses template widget.
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);
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.
- activateCDKTemplate
- activates the template widget and lets the user interact with the
widget.
- The parameter template is a pointer to a non-NULL template
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 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 widget
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 template 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
exitType 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 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 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 template 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 widget. The following table lists the format
types.
Plate_Character |
Effect |
# |
Accepts an integer. |
A |
Accepts an alphabetic value. |
C |
Accepts an alphabetic value. Automatically converts the character to
upper case. |
c |
Accepts an alphabetic value. Automatically converts the character to
lower case. |
M |
Accepts alphanumeric characters. |
X |
Accepts alphanumeric characters. Automatically converts the character to
upper case. |
x |
Accepts alphanumeric characters. Automatically converts the character 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 display 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 single
keystroke commands. See cdk_position (3) for key bindings.
- setCDKTemplate
- lets the programmer modify certain elements of an existing template
widget.
- The parameter names correspond to the same parameter 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-processing 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
character.
- unmixCDKTemplate
- returns a char* pointer to the field value without any plate
characters.
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 |
Delete |
Deletes the character at the cursor. |
Backspace |
Deletes the character before cursor, 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
buffer. |
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. |
cdk(3), cdk_binding(3), cdk_display(3),
cdk_screen(3)
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