DtSpinBox(library call) DtSpinBox(library call)
NAMEDtSpinBox — the SpinBox widget class
SYNOPSIS
#include <Dt/SpinBox.h>
DESCRIPTION
Note:
This widget has been superseded by the equivalent Motif widget
XmSimpleSpinBox. Please refer to the Motif Programmer's Refer‐
ence for more information.
The DtSpinBox widget is a user interface control to increment and
decrement an arbitrary TextField. For example, it can be used to cycle
through the months of the year or days of the month.
Widget subclassing is not supported for the DtSpinBox widget class.
Classes
The DtSpinBox widget inherits behavior and resources from the Core,
Composite and XmManager classes.
The class pointer is dtSpinBoxWidgetClass.
The class name is DtSpinBoxWidget.
New Resources
The following table defines a set of widget resources used by the
application to specify data. The application can also set the resource
values for the inherited classes to set attributes for this widget. To
reference a resource by name or by class in a .Xdefaults file, the
application must remove the DtN or DtC prefix and use the remaining
letters. To specify one of the defined values for a resource in a .Xde‐
faults file, the application must remove the Dt prefix and use the
remaining letters (in either lower case or upper case, but including
any underscores between words). The codes in the access column indicate
if the given resource can be set at creation time (C), set by using
XtSetValues (S), retrieved by using XtGetValues (G), or is not applica‐
ble (N/A).
DtSpinBox Resource
Set
Name Class Type Default Access
DtNarrowLayout DtCArrowLayout unsigned char DtARROWS_END CSG
DtNarrowSensitivity DtCArrowSensitivity unsigned char DtARROWS-_SENSITIVE CSG
DtNdecimalPoints DtCDecimalPoints short 0 CSG
DtNincrementValue DtCIncrementValue int 1 CSG
DtNinitialDelay DtCInitialDelay unsigned int 250 CSG
DtNmaximumValue DtCMaximumValue int 10 CSG
DtNminimumValue DtCMinimumValue int 0 CSG
DtNmodifyVerifyCallback DtCCallback XtCallbackList NULL C
DtNnumValues DtCNumValues int 0 CSG
DtNposition DtCPosition int 0 CSG
DtNrepeatDelay DtCRepeatDelay unsigned int 200 CSG
DtNspinBoxChildType DtCSpinBoxChildType unsigned char XmSTRING CG
DtNvalueChangedCallback DtCCallback XtCallbackList NULL C
DtNvalues DtCValues XmStringTable NULL CSG
DtNarrowLayout
Specifies the style and position of the SpinBox arrows. The
following values are supported:
DtARROWS_FLAT_BEGINNING
The arrows are placed side by side to the right of
the TextField.
DtARROWS_FLAT_END
The arrows are placed side by side to the left of
the TextField.
DtARROWS_SPLIT
The down arrow is on the left and the up arrow is
on the right of the TextField.
DtARROWS_BEGINNING
The arrows are stacked and placed on the left of
the TextField.
DtARROWS_END
The arrows are stacked and placed on the right of
the TextField.
DtNarrowSensitivity
Specifies the sensitivity of the arrows in the DtSpinBox. The
following values are supported:
DtARROWS_SENSITIVE
Both arrows are active to user selection.
DtARROWS_DECREMENT_SENSITIVE
The down arrow is active and the up arrow is inac‐
tive to user selection.
DtARROWS_INCREMENT_SENSITIVE
The up arrow is active and the down arrow is inac‐
tive to user selection.
DtARROWS_INSENSITIVE
Both arrows are inactive to user selection.
DtNdecimalPoints
Specifies the position of the radix character within the
numeric value when DtNspinBoxChildType is DtNUMERIC. This
resource is used to allow for floating point values in the
DtSpinBox widget.
DtNincrementValue
Specifies the amount to increment or decrement the DtNposi‐
tion when the DtNspinBoxChildType is DtNUMERIC. When the Up
action is activated, the DtNincrementValue is added to the
DtNposition value; when the Down action is activated, the
DtNincrementValue is subtracted from the DtNposition value.
When DtNspinBoxChildType is DtSTRING, this resource is
ignored.
DtNinitialDelay
Specifies the amount of time in milliseconds before the Arrow
buttons will begin to spin continuously.
DtNnumValues
Specifies the number of items in the DtNvalues list when the
DtNspinBoxChildType resource is DtSTRING. The value of this
resource must be a positive integer. The DtNnumValues is
maintained by the DtSpinBox widget when items are added or
deleted from the DtNvalues list. When DtNspinBoxChildType is
not DtSTRING, this resource is ignored.
DtNvalues Supplies the list of strings to cycle through when the DtN‐
spinButtonChildType resource is DtSTRING. When DtNspinBox‐
ChildType is not DtSTRING, this resource is ignored.
DtNmaximumValue
Specifies the upper bound on the DtSpinBox's range when DtN‐
spinBoxChildType is DtNUMERIC.
DtNminimumValue
Specifies the lower bound on the DtSpinBox's range when DtN‐
spinBoxChildType is DtNUMERIC.
DtNmodifyVerifyCallback
Specifies the callback to be invoked just before the DtSpin‐
Box position changes. The application can use this callback
to implement new application-related logic (including setting
new position spinning to, or canceling the impending action).
For example, this callback can be used to stop the spinning
just before wrapping at the upper and lower position bound‐
aries. If the application sets the doit member of the DtSpin‐
BoxCallbackStruct to False, nothing happens. Otherwise, the
position changes. Reasons sent by the callback are
DtCR_SPIN_NEXT, or DtCR_SPIN_PRIOR.
DtNposition
The DtNposition resource has a different value based on the
DtNspinBoxChildType resource. When DtNspinBoxChildType is
DtSTRING, the DtNposition is the index into the DtNvalues
list for the current item. When the DtNspinBoxChildType
resource is DtNUMERIC, the DtNposition is the integer value
of the DtSpinBox that falls within the range of DtNmaximum‐
Value and DtNminimumValue.
DtNrepeatDelay
Specifies the number of milliseconds between repeated calls
to the DtNvalueChangedCallback while the user is spinning the
DtSpinBox.
DtNspinBoxChildType
Specifies the style of the DtSpinBox. The following values
are supported:
DtSTRING The child is a string value that is specified
through the DtNvalues resource and incremented and
decremented by changing the DtNposition resource.
DtNUMERIC The child is a numeric value that is specified
through the DtNposition resource and incremented
according to the DtNincrementValue resource.
DtNvalueChangedCallback
Specifies the callback to be invoked whenever the value of
the DtNposition resource is changed through the use of the
spinner arrows. The DtNvalueChangedCallback passes the
DtSpinBoxCallbackStruct call_data structure.
Inherited Resources
The DtSpinBox widget inherits behavior and resources from the following
named superclasses. For a complete description of each resource, see
the man page for that superclass.
XmManager Resource
Set
Name Class Type Default Access
XmNbottomShadowColor XmCBottomShadowColor Pixel dynamic CSG
XmNbottomShadowPixmap XmCBottomShadowPixmap Pixmap XmUNSPECIFIED_PIXMAP CSG
XmNforeground XmCForeground Pixel dynamic CSG
XmNhelpCallback XmCCallback XtCallbackList NULL C
XmNhighlightColor XmCHighlightColor Pixel dynamic CSG
XmNhighlightPixmap XmCHighlightPixmap Pixmap dynamic CSG
XmNinitialFocus XmCInitialFocus Widget NULL CSG
XmNnavigationType XmCNavigationType XmNavigationType dynamic CSG
XmNshadowThickness XmCShadowThickness Dimension dynamic CSG
XmNstringDirection XmCStringDirection XmStringDirection dynamic CG
XmNtopShadowColor XmCTopShadowColor Pixel dynamic CSG
XmNtopShadowPixmap XmCTopShadowPixmap Pixmap dynamic CSG
XmNtraversalOn XmCTraversalOn Boolean dynamic CSG
XmNunitType XmCUnitType unsigned char dynamic CSG
XmNuserData XmCUserData XtPointer NULL CSG
Composite Resource
Set
Name Class Type Default Access
XmNchildren XmCReadOnly WidgetList NULL G
XmNinsertPosition XmCInsertPosition XtOrderProc default procedure CSG
XmNnumChildren XmCReadOnly Cardinal 0 G
Core Resource Set
Name Class Type Default Access
XmNaccelerators XmCAccelerators XtAccelerators dynamic CSG
XmNancestorSensitive XmCSensitive Boolean dynamic G
XmNbackground XmCBackground Pixel dynamic CSG
XmNbackgroundPixmap XmCPixmap Pixmap XmUNSPECIFIED_PIXMAP CSG
XmNborderColor XmCBorderColor Pixel XtDefaultForeground CSG
XmNborderPixmap XmCPixmap Pixmap XmUNSPECIFIED_PIXMAP CSG
XmNborderWidth XmCBorderWidth Dimension 0 CSG
XmNcolormap XmCColormap Colormap dynamic CG
XmNdepth XmCDepth int dynamic CG
XmNdestroyCallback XmCCallback XtCallbackList NULL C
XmNheight XmCHeight Dimension dynamic CSG
XmNinitialResourcesPersistent XmCInitialResourcesPersistent Boolean True C
XmNmappedWhenManaged XmCMappedWhenManaged Boolean True CSG
XmNscreen XmCScreen Screen * dynamic CG
XmNsensitive XmCSensitive Boolean True CSG
XmNtranslations XmCTranslations XtTranslations dynamic CSG
XmNwidth XmCWidth Dimension dynamic CSG
XmNx XmCPosition Position 0 CSG
XmNy XmCPosition Position 0 CSG
Callback Information
A pointer to the following structure is passed to each DtSpinBox call‐
back:
typedef struct {
int reason;
XEvent *event;
Widget widget;
Boolean doit;
int position;
XmString value;
Boolean crossed_boundary;
} DtSpinBoxCallbackStruct;
The reason argument indicates why the callback was invoked. There are
three possible reasons for this callback to be issued. The reason is
DtCR_OK when this is the first call to the callback at the beginning of
a spin or if it is a single activation of the spin arrows. If the
DtSpinBox is in the process of being continuously spun, then the reason
will be DtCR_SPIN_NEXT or DtCR_SPIN_PRIOR, depending on the arrow that
is spinning.
The event argument points to the XEvent that triggered the callback. It
can be NULL when the DtSpinBox is continuously spinning.
The widget argument is the widget identifier for the text widget that
has been affected by the spin.
The doit argument is set only when the call_data comes from the DtNmod‐
ifyVerifyCallback. It indicates that the action that caused the call‐
back to be called should be performed. The action is not performed if
doit is set to False.
The position argument is the new value of the DtNposition resource as a
result of the spin.
The value argument is the new XmString value displayed in the Text wid‐
get as a result of the spin. The application must copy this string if
it is used beyond the scope of the call_data structure.
The crossed_boundary argument is True when the spinbox cycles. This is
the case when a DtNspinBoxChildType of DtSTRING wraps from the first
item to the last or the last item to the first. In the case of the DtN‐
spinBoxChildType of DtNUMERIC, the boundary is crossed when the DtSpin‐
Box cycles from the maximum value to the minimum or vice versa.
SEE ALSODtCreateSpinBox(3), DtSpinBoxAddItem(3), DtSpinBoxDeletePos(3), DtSpin‐
BoxSetItem(3), Composite(3), Core(3), XmManager(3), XmText(3),
XmTextField(3), XtGetValues(3), XtSetValues(3)
DtSpinBox(library call)
