459 lines
18 KiB
Groff
459 lines
18 KiB
Groff
.de It
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.br
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.ie \\n(.$>=3 .ne \\$3
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.el .ne 3
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.IP "\\$1" \\$2
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..
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.TH cdk_selection 3 "24 April 1997"
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.SH NAME
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newCDKSelection, activateCDKSelection, injectCDKSelection, setCDKSelection,
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setCDKSelectionChoices, getCDKSelectionChoices,
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setCDKSelectionChoice, getCDKSelectionChoice,
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setCDKSelectionModes, getCDKSelectionModes,
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setCDKSelectionMode, getCDKSelectionMode,
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setCDKSelectionBox, getCDKSelectionBox,
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setCDKSelectionULChar, setCDKSelectionURChar,
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setCDKSelectionLLChar, setCDKSelectionLRChar,
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setCDKSelectionVerticalChar, setCDKSelectionHorizontalChar,
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setCDKSelectionBoxAttribute,
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setCDKSelectionBackgroundColor,
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drawCDKSelection, eraseCDKSelection, destroyCDKSelection,
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setCDKSelectionPreProcess, setCDKSelectionPostProcess \- Creates a managed
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curses selection list widget.
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.SH SYNOPSIS
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.LP
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.B cc
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.RI "[ " "flag" " \|.\|.\|. ] " "file" " \|.\|.\|."
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.B \-lcdk
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.RI "[ " "library" " \|.\|.\|. ]"
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.LP
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#include <cdk.h>
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.LP
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.BI "CDKSELECTION *newCDKSelection (CDKSCREEN *" "cdkscreen",
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.BI "int " "xpos",
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.BI "int " "ypos",
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.BI "int " "spos",
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.BI "int " "height",
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.BI "int " "width",
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.BI "char *" "title",
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.BI "char **" "selectionList",
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.BI "int " "selectionListLength",
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.BI "char **" "choiceList",
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.BI "int " "choiceListLength",
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.BI "chtype " "highlight",
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.BI "boolean " "box",
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.BI "boolean " "shadow");
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.LP
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.BI "int activateCDKSelection (CDKSELECTION *" "selection",
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.BI "chtype * " "actions");
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.LP
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.BI "int injectCDKSelection (CDKSELECTION *" "selection",
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.BI "chtype " "input");
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.LP
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.BI "void setCDKSelection (CDKSELECTION *" "selection",
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.BI "chtype " "highlight",
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.BI "chtype " "choiceCharacter",
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.BI "boolean " "box");
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.LP
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.BI "void setCDKSelectionULChar (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionURChar (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionLLChar (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionLRChar (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionVerticalChar (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionHorizontalChar (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionBoxAttribute (CDKSELECTION *", "selection",
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.BI "chtype " "character");
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.LP
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.BI "void setCDKSelectionBackgroundColor (CDKSELECTION *", "selection",
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.BI "char * " "color");
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.LP
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.BI "void moveCDKSelection (CDKSELECTION *" "selection",
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.BI "int " "box",
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.BI "int " "box",
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.BI "boolean " "relative",
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.BI "boolean " "refresh");
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.LP
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.BI "void positionCDKSelection (CDKSELECTION *" "selection");
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.LP
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.BI "void drawCDKSelection (CDKSELECTION *" "selection",
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.BI "boolean " "box");
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.LP
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.BI "void eraseCDKSelection (CDKSELECTION *" "selection");
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.LP
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.BI "void destroyCDKSelection (CDKSELECTION *" "selection");
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.LP
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.BI "void setCDKSelectionPreProcess (CDKSELECTION *" "selection",
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.BI "PROCESSFN " "callback",
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.BI "void * " "data");
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.LP
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.BI "void setCDKSelectionPostProcess (CDKSELECTION *" "selection",
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.BI "PROCESSFN " "callback",
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.BI "void * " "data");
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.LP
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.BI "void bindCDKObject (EObjectType " "widgetType",
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.BI "void *" "object",
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.BI "chtype " "key",
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.BI "BINDFN " "function",
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.BI "void *" "data");
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.SH DESCRIPTION
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The Cdk selection widget creates a selection list. The following are functions
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which create or manipulate the Cdk selection box widget.
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.SH AVAILABLE FUNCTIONS
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CDKSELECTION *newCDKSelection (CDKSCREEN *\f2screen\f1, int \f2xpos\f1, int \f2ypos\f1, int \f2spos\f1, int \f2height\f1, int \f2width\f1, char *\f2title\f1, char **\f2selectionList\f1, int \f2selectionListLength\f1, char *\f2choiceList\f1, int \f2choiceListLength\f1, chtype \f2highlight\f1, boolean \f2box\f1, boolean \f2shadow\f1);
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.RS 3
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This function creates a pointer to a selection widget. The \f2screen\f1 parameter
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is the screen you wish this widget to be placed in. The parameter \f2xpos\f1
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controls the placement of the object along the horizontal axis. This parameter
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can accept an integer value or one of the pre-defined values of \f4LEFT\f1,
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\f4RIGHT\f1, and \f4CENTER\f1. The parameter \f2ypos\f1 controls the placement
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of the object along the vertical axis. This parameter can accept an integer
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value or one of the pre-defined values of \f4TOP\f1, \f4BOTTOM\f1, and \f4CENTER\f1.
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The parameter \f2spos\f1 is where the scroll bar is to be placed. This can
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accept one of three values: \f4LEFT\f1, which puts the scroll bar on the left
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of the scrolling list. \f4RIGHT\f1 which puts the scroll bar on the right side
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of the list, and \f4NONE\f1 which does not add a scroll bar. The parameters
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\f2height\f1 and \f2width\f1 control the height and width of the widget. If
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you provide a value of zero for either of the height or the width, the widget
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will be created with the full width and height of the screen. If you provide a
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negative value, the widget will be created the full height or width minus the
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value provided. The \f2title\f1 parameter is the string which will be
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displayed at the top of the widget. The title can be more than one line; just
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provide a carriage return character at the line break. The parameter
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\f2selectionList\f1 is the list of items to be displayed in the
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selection list; \f2selectionListLength\f1 is the number of elements in the
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given list. The \f2choiceList\f1 parameter is the list of choices that will
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be selected when the user presses the space bar; \f2choiceListLength\f1 is
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the length of this list. The \f2highlight\f1 parameter specifies the display
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attribute of the currently selected item. The \f2box\f1 parameter states
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whether the widget will be drawn with a box around it or not. The
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\f2shadow\f1 parameter accepts a boolean value to turn the shadow on or off
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around this widget. If the widget could not be created then a \f4NULL\f1
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pointer is returned.
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.RE
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int activateCDKSelection (CDKSELECTION *\f2selection\f1, chtype * \f2actions\f1);
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.RS 3
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This function activates the selection widget and lets the user interact with the
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widget. The parameter \f2selection\f1 is a pointer to a non-NULL selection widget.
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If the \f2actions\f1 parameter is passed with a non-NULL value, the characters
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in the array will be injected into the widget. To activate the widget
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interactively pass in a \f4NULL\f1 pointer for \f2actions\f1. If the character entered
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into this widget is \f4RETURN\f1 or \f4TAB\f1 then this function will return 1.
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Itm will also set the structure member \f4exitType\f1 to \f4vNORMAL\f1. If the
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character entered into this widget was \f4ESCAPE\f1 then the widget will return
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a value of -1 and the structure member \f4exitType\f1 will be set to
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\f4vESCAPE_HIT\f1.
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.RE
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int injectCDKSelection (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function injects a single character into the widget. The parameter
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\f2selection\f1 is a pointer to a non-NULL selection widget. The parameter
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\f2character\f1 is the character to inject into the widget. If the character
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injected into this widget was \f4RETURN\f1 then the character injected into
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this widget is \f4RETURN\f1 or \f4TAB\f1 then this function will return 1.
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It will also set the structure member \f4exitType\f1 to \f4vNORMAL\f1. If the
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character entered into this widget was \f4ESCAPE\f1 then the widget will return
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a value of -1 and the structure member \f4exitType\f1 will be set to
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\f4vESCAPE_HIT\f1. Any other character injected into the widget will set the
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structure member \f4exitType\f1 to \f4vEARLY_EXIT\f1 and the function will
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return -1.
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.RE
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void setCDKSelection (CDKSELECTION *\f2selection\f1, chtype \f2highlight\f1, chtype \f2choiceCharacter\f1, boolean \f2box\f1);
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.RS 3
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This function lets the programmer modify certain elements of an already
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defined selection widget. The parameter names correspond to the same
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parameter names listed in the \f4newCDKSelection\f1 function.
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.RE
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void setCDKSelectionChoices (CDKSELECTION *\f2selection\f1, int \f2choices[]\f1);
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.RS 3
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This function sets the selection choice values of the widget.
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.RE
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int *getCDKSelectionChoices (CDKSELECTION *\f2selection\f1);
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.RS 3
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This returns an array of the current selection choices for the widget.
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.RE
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void setCDKSelectionChoice (CDKSELECTION *\f2selection\f1, int \f2index\f1, int \f2choice\f1);
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.RS 3
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This sets the selection choice value at the given index.
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.RE
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int getCDKSelectionChoice (CDKSELECTION *\f2selection\f1, int \f2index\f1);
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.RS 3
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This returns the selection choice at the given index.
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.RE
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void setCDKSelectionModes (CDKSELECTION *\f2selection\f1, int \f2modes[]\f1);
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.RS 3
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This function sets the selection mode of the elements of the widget. There are
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two acceptable values for the modes: 0 which allows the user to change the
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selection value at the given index; and 1 which sets the element to a read-only
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state.
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.RE
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int *getCDKSelectionModes (CDKSELECTION *\f2selection\f1);
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.RS 3
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This returns an array of the current modes for the widget.
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.RE
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void setCDKSelectionMode (CDKSELECTION *\f2selection\f1, int \f2index\f1, int \f2mode\f1);
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.RS 3
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This sets the selection mode at the given index.
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.RE
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int getCDKSelectionMode (CDKSELECTION *\f2selection\f1, int \f2index\f1);
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.RS 3
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This returns the selection mode at the given index.
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.RE
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void setCDKSelectionHighlight (CDKSELECTION *\f2selection\f1, chtype \f2highlight\f1);
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.RS 3
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This sets the attribute of the highlight bar.
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.RE
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chtype getCDKSelectionHighlight (CDKSELECTION *\f2selection\f1);
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.RS 3
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This returns the attribute of the highlight bar.
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.RE
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void setCDKSelectionBox (CDKSELECTION *\f2selection\f1, boolean \f2boxWidget\f1);
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.RS 3
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This sets whether or not the widget will be draw with a box around it.
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.RE
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boolean getCDKSelectionBox (CDKSELECTION *\f2selection\f1);
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.RS 3
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This returns whether or not the widget will be drawn with a box around it.
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.RE
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void setCDKSelectionULChar (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function sets the upper left hand corner of the widgets box to
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the given character.
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.RE
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void setCDKSelectionURChar (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function sets the upper right hand corner of the widgets box to
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the given character.
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.RE
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void setCDKSelectionLLChar (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function sets the lower left hand corner of the widgets box to
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the given character.
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.RE
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void setCDKSelectionLRChar (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function sets the lower right hand corner of the widgets box to
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the given character.
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.RE
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void setCDKSelectionVerticalChar (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function sets the vertical drawing character for the box to
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the given character.
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.RE
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void setCDKSelectionHorizontalChar (CDKSELECTION *\f2selection\f1, chtype \f2character\f1);
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.RS 3
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This function sets the horizontal drawing character for the box to
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the given character.
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.RE
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void setCDKSelectionBoxAttribute (CDKSELECTION *\f2selection\f1, chtype \f2attribute\f1);
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.RS 3
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This function sets the attribute of the box.
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.RE
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void setCDKSelectionBackgroundColor (CDKSELECTION *\f2selection\f1, char *\f2color\f1);
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.RS 3
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This sets the background color of the widget. The parameter \f2color\f1
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is in the format of the Cdk format strings. To get more information look
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at the \f4cdk_display\f1 manual page.
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.RE
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void moveCDKSelection (CDKSELECTION *\f2selection\f1, int \f2xpos\f1, int \f2ypos\f1, boolean \f2relative\f1, boolean \f2refresh\f1);
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.RS 3
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This function moves the given widget to the given position. The parameters
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\f2xpos\f1 and \f2ypos\f1 is the new position of the widget. The parameter
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\f2xpos\f1 can accept an integer value or one of the pre-defined values of
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\f4TOP\f1, \f4BOTTOM\f1, and \f4CENTER\f1. The parameter \f2ypos\f1 can
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accept an integer value or one of the pre-defined values of \f4LEFT\f1,
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\f4RIGHT\f1, and \f4CENTER\f1. The parameter \f2relative\f1 states whether
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the \f2xpos\f1/\f2ypos\f1 pair is a relative move or an absolute move. For
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example if \f2xpos\f1 = 1 and \f2ypos\f1 = 2 and \f2relative\f1 = \f2TRUE\f1,
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then the widget would move one row down and two columns right. If the value
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of \f2relative\f1 was \f2FALSE\f1 then the widget would move to the position
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(1,2). Do not use the values of \f4TOP\f1, \f4BOTTOM\f1, \f4LEFT\f1,
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\f4RIGHT\f1, or \f4CENTER\f1 when \f2relative\f1 = \f4TRUE\f1. (weird things
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may happen). The final parameter \f2refresh\f1 is a boolean value which
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states whether the widget will get refreshed after the move or not.
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.RE
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void positionCDKSelection (CDKSELECTION *\f2selection\f1);
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.RS 3
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This function allows the user to move the widget around the screen via the
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cursor/keypad keys. The following key bindings can be used to move the
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widget around the screen.
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.LP
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.nf
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\f4Key Bindings\f1
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.RS 3
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\f2Key Action\f1
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Up Arrow Moves the widget up one line.
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Down Arrow Moves the widget down one line.
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Left Arrow Moves the widget left one column
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Right Arrow Moves the widget right one column
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Keypad-1 Moves the widget down one line
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and left one column.
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Keypad-2 Moves the widget down one line.
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Keypad-3 Moves the widget down one line
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and right one column.
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Keypad-4 Moves the widget left one column
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Keypad-5 Centers the widget both vertically
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and horizontally.
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Keypad-6 Moves the widget right one column
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Keypad-7 Moves the widget up one line
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and left one column.
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Keypad-8 Moves the widget up one line.
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Keypad-9 Moves the widget up one line
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and right one column.
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t Moves the widget to the top of the screen.
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b Moves the widget to the bottom of the screen.
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l Moves the widget to the left of the screen.
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r Moves the widget to the right of the screen.
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c Centers the widget between the left and
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right of the window.
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C Centers the widget between the top and
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bottom of the window.
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Escape Returns the widget to its original position.
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Return Exits the function and leaves the widget
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where it was.
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.fi
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.RE
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.RS 3
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.LP
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Keypad means that if the keyboard you are using has a keypad, then the
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Num-Lock light has to be on in order to use the keys as listed. (The
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numeric keys at the top of the keyboard will work as well.)
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.LP
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void drawCDKSelection (CDKSELECTION *\f2selection\f1, boolean \f2box\f1);
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.RS 3
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This function draws the selection widget on the screen. The \f2box\f1 option
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draws the widget with or without a box.
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.RE
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void eraseCDKSelection (CDKSELECTION *\f2selection\f1);
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.RS 3
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This function removes the widget from the screen. This does \f4NOT\f1 destroy
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the widget.
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.RE
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void destroyCDKSelection (CDKSELECTION *\f2selection\f1);
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.RS 3
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This function removes the widget from the screen and frees up any memory the
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object may be using.
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.RE
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void setCDKSelectionPreProcess (CDKSELECTION *\f2selection\f1, PROCESSFN \f2function\f1, void *\f2data\f1);
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.RS 3
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This function allows the user to have the widget call a function after a key
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is hit and before the key is applied to the widget. The parameter \f2function\f1
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if of type \f4PROCESSFN\f1. The parameter \f2data\f1 is a pointer to
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\f4void\f1. To learn more about pre-processing read the \f4cdk_process\f1
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manual page.
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.RE
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void setCDKSelectionPostProcess (CDKSELECTION *\f2selection\f1, PROCESSFN \f2function\f1, void *\f2data\f1);
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.RS 3
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This function allows the user to have the widget call a function after the
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key has been applied to the widget. The parameter \f2function\f1 if of type
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\f4PROCESSFN\f1. The parameter \f2data\f1 is a pointer to \f4void\f1. To
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learn more about post-processing read the \f4cdk_process\f1 manual page.
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.RE
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void bindCDKObject (EObjectType \f2widgetType\f1, void *\f2object\f1, char \f2key\f1, BINDFN \f2function\f1, void *\f2data\f1);
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.RS 3
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This function allows the user to create special key bindings. The
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\f2widgetType\f1 parameter is a defined type which states what Cdk object
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type is being used. To learn more about the type \f4EObjectType\f1 read
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the \f4cdk_binding\f1 manual page. The \f2object\f1 parameter is the
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pointer to the widget object. The \f2key\f1 is the character to bind. The
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\f2function\f1 is the function type. To learn more about the key binding
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callback function types read the \f4cdk_binding\f1 manual page. The last
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parameter \f2data\f1 is a pointer to any data that needs to get passed to
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the callback function.
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.RE
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.SH KEY BINDINGS
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When the widget is activated there are several default key bindings which will
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help the user enter or manipulate the information quickly. The following table
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outlines the keys and their actions for this widget.
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.LP
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.RS 3
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.nf
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\f2Key Action\f1
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Left Arrow Shifts the whole list left one character.
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Right Arrow Shifts the whole list right one character.
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Up Arrow Selects the next item up in the list.
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Down Arrow Selects the next item down in the list.
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Space Cycles to the next choice on the current item.
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Prev Page Moves one page backwards.
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Ctrl-B Moves one page backwards.
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Next Page Moves one page forwards.
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Ctrl-F Moves one page forwards.
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g Moves to the first element in the list.
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1 Moves to the first element in the list.
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G Moves to the last element in the list.
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$ Shifts the whole list to the far right.
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| Shifts the whole list to the far left.
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Return Exits the widget and returns 1.
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This also sets the structure member
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\f4exitType\f1 in the widget pointer
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to the value of \f4vNORMAL\f1.
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Tab Exits the widget and returns 1.
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This also sets the structure member
|
|
\f4exitType\f1 in the widget pointer
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|
to the value of \f4vNORMAL\f1.
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|
Escape Exits the widget and returns -1.
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This also sets the structure member
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|
\f4exitType\f1 in the widget pointer
|
|
to the value of \f4vESCAPE_HIT\f1.
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Ctrl-L Refreshes the screen.
|
|
.RE
|
|
.fi
|
|
.SH SEE ALSO
|
|
.BR cdk (3),
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|
.BR cdk_binding (3),
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|
.BR cdk_display (3),
|
|
.BR cdk_screen (3)
|
|
.SH NOTES
|
|
.PP
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|
The header file \f4<cdk.h>\f1 automatically includes the header files
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|
\f4<curses.h>\f1, \f4<stdlib.h>\f1, \f4<string.h>\f1, \f4<ctype.h>\f1,
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|
\f4<unistd.h>\f1, \f4<dirent.h>\f1, \f4<time.h>\f1, \f4<errno.h>\f1,
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|
\f4<pwd.h>\f1, \f4<grp.h>\f1, \f4<sys/stat.h>\f1, and \f4<sys/types.h>\f1.
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The \f4<curses.h>\f1 header file includes \f4<stdio.h>\f1 and \f4<unctrl.h>\f1.
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|
.PP
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If you have \f4Ncurses\f1 installed on your machine add -DNCURSES to the
|
|
compile line to include the Ncurses header files instead.
|