The DataField widget is a Data Presentation widget that handles display and entry of data as text.
The DataField widget is a subclass of the XmTextField widget intended for data entry
applications. In addition to all of the normal XmTextField functionality, it supports regular
expression-based parsing and acceptance/rejection of its input through the XmNpicture resource,
and right justification through the XmNalignment resource.
The DataField widget provides added capability by supporting several types of validation: a
DataField widget containing an invalid value will not give-up focus; the user must enter a
correct value before proceeding to another field.
Classes
DataField inherits behavior, resources, and traits from Core,
XmPrimitive, and XmTextField.
The class pointer is xmDataFieldWidgetClass.
The class name is XmDataField.
New Resources
The following table defines a set of widget resources used by the
programmer to specify data. The programmer 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,
remove the XmN or XmC prefix and use the remaining letters.
To specify one of the defined values for a resource in a .Xdefaults
file, remove the Xm prefix and use the remaining letters (in
either lowercase or uppercase, but include 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
applicable (N/A).
XmDataField Resource Set
Name
Class
Type
Default
Access
XmNalignment
XmCAlignment
unsigned char
XmALIGNMENT_BEGINNING
CSG
XmNautoFill
XmCAutoFill
Boolean
True
CSG
XmNpicture
XmCPicture
String
NULL
CSG
XmNpictureErrorCallback
XmCCallback
XtCallbackList
NULL
C
XmNvalidateCallback
XmCCallback
XtCallbackList
NULL
C
XmNalignment
When set to XmALIGNMENT_END, the widget aligns all its text with the right hand side of the
input area.
XmNautoFill
When set to True, the widget "auto-fills" its contents when it can determine that the next
character in the string must be a particular literal. For instance, the picture "###-####"
automatically inserts a '-' character after receiving three numeric digits as input.
XmNpicture
Specifies a picture for data entry in the widget. A picture acts as a template that formats
the value you enter in a field. An example would be the US Phone Number picture: (###)###-####.
The picture is used to convert characters entered into the field to a formatted value.
Character interpretations
The following lists and defines the characters you can use in a picture, and how the
DataField widget interprets them.
#
Any numeric digit
?
Case insensitive letter
&
Uppercase letter (forces lowercase to uppercase)
@
Case insensitive character
!
Uppercase character
;
Interpret the following character literally
*
Repeat the following character some number of times
[]
Characters within brackets are optional
{}
Characters within braces are grouped
,
Alternative values
Other characters are interpreted literally.
Set XmNpicture to NULL to disable regular expression processing. The DataField widget is
cleared whenever the XmNpicture resource is changed.
XmNpictureErrorCallback
Specifies a list of callbacks to be called when the XmDataField widget determines that data is
being entered that does not match the format specified by the XmNpicture resource.
XmNvalidateCallback
Specifies a list of callbacks to be called when data has been entered in the XmDataField widget
and the user has moved out of the XmDataField widget (usually by pressing the Tab key). The
callbacks can reject the movement of focus.
Inherited Resources
DataField inherits behavior and resources from the
superclasses described in the following tables.
For a complete description of each resource, refer to the
reference page for that superclass.
XmTextFieldResource Set
Name
Class
Type
Default
Access
XmNactivateCallback
XmCCallback
XtCallbackList
NULL
C
XmNblinkRate
XmCBlinkRate
int
500
CSG
XmNcolumns
XmCColumns
short
dynamic
CSG
XmNcursorPosition
XmCCursorPosition
XmTextPosition
0
CSG
XmNcursorPositionVisible
XmCCursorPositionVisible
Boolean
dynamic
CSG
XmNdestinationCallback
XmCCallback
XtCallbackList
NULL
C
XmNeditable
XmCEditable
Boolean
True
CSG
XmNfocusCallback
XmCCallback
XtCallbackList
NULL
C
XmNfontList
XmCFontList
XmFontList
dynamic
CSG
XmNgainPrimaryCallback
XmCCallback
XtCallbackList
NULL
C
XmNlosePrimaryCallback
XmCCallback
XtCallbackList
NULL
C
XmNlosingFocusCallback
XmCCallback
XtCallbackList
NULL
C
XmNmarginHeight
XmCMarginHeight
Dimension
5
CSG
XmNmarginWidth
XmCMarginWidth
Dimension
5
CSG
XmNmaxLength
XmCMaxLength
int
largest integer
CSG
XmNmodifyVerifyCallback
XmCCallback
XtCallbackList
NULL
C
XmNmodifyVerifyCallbackWcs
XmCCallback
XtCallbackList
NULL
C
XmNmotionVerifyCallback
XmCCallback
XtCallbackList
NULL
C
XmNpendingDelete
XmCPendingDelete
Boolean
True
CSG
XmNrenderTable
XmCRenderTable
XmRenderTable
dynamic
CSG
XmNresizeWidth
XmCResizeWidth
Boolean
False
CSG
XmNselectionArray
XmCSelectionArray
XtPointer
default array
CSG
XmNselectionArrayCount
XmCSelectionArrayCount
int
3
CSG
XmNselectThreshold
XmCSelectThreshold
int
5
CSG
XmNvalue
XmCValue
String
""
CSG
XmNvalueChangedCallback
XmCCallback
XtCallbackList
NULL
C
XmNvalueWcs
XmCValueWcs
wchar_t *
(wchar_t *)""
CSG
XmNverifyBell
XmCVerifyBell
Boolean
dynamic
CSG
XmPrimitive Resource Set
Name
Class
Type
Default
Access
XmNbottomShadowColor
XmCBottomShadowColor
Pixel
dynamic
CSG
XmNbottomShadowPixmap
XmCBottomShadowPixmap
Pixmap
XmUNSPECIFIED_PIXMAP
CSG
XmNconvertCallback
XmCCallback
XtCallbackList
NULL
C
XmNforeground
XmCForeground
Pixel
dynamic
CSG
XmNhelpCallback
XmCCallback
XtCallbackList
NULL
C
XmNhighlightColor
XmCHighlightColor
Pixel
dynamic
CSG
XmNhighlightOnEnter
XmCHighlightOnEnter
Boolean
False
CSG
XmNhighlightPixmap
XmCHighlightPixmap
Pixmap
dynamic
CSG
XmNhighlightThickness
XmCHighlightThickness
Dimension
2
CSG
XmNlayoutDirection
XmCLayoutDirection
XmDirection
dynamic
CG
XmNnavigationType
XmCNavigationType
XmNavigationType
XmTAB_GROUP
CSG
XmNpopupHandlerCallback
XmCCallback
XtCallbackList
NULL
C
XmNshadowThickness
XmCShadowThickness
Dimension
2
CSG
XmNtopShadowColor
XmCTopShadowColor
Pixel
dynamic
CSG
XmNtopShadowPixmap
XmCTopShadowPixmap
Pixmap
dynamic
CSG
XmNtraversalOn
XmCTraversalOn
Boolean
True
CSG
XmNunitType
XmCUnitType
unsigned char
dynamic
CSG
XmNuserData
XmCUserData
XtPointer
NULL
CSG
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
Translations
XmDataField inherits translations from XmTextField.
Callback Routines
A pointer to the following structure is passed to the list of routines for the XmNvalidateCallback: