Form object JSON property list

You will find in this page a comprehensive list of all object properties sorted through their JSON name. Click on a property name to access its detailed description.

In the "Form Object Properties" chapter, properties are sorted according the Property List names and themes.

a - b - c - d - e - f - g - h - i - k - l - m - n - p - r - s - t - u - v - w - z

Property	Description	Possible Values
a
action	Typical activity to be performed.	The name of a valid standard action.
allowFontColorPicker	Allows displaying system font picker or color picker to edit object attributes	true, false (default)
alternateFill	Allows setting a different background color for odd-numbered rows/columns in a list box.	Any CSS value; "transparent"; "automatic"; "automaticAlternate"
automaticInsertion	Enables automatically adding a value to a list when a user enters a value that is not in the object's associated choice list.	true, false
b
booleanFormat	Specifies only two possible values.	true, false
borderRadius	The radius value for round rectangles.	minimum: 0
borderStyle	Allows setting a standard style for the object border.	"system", "none", "solid", "dotted", "raised", "sunken", "double"
bottom	Positions an object at the bottom (centered).	minimum: 0
c
choiceList	A list of choices associated with an object	A list of choices
class	A list of space-separated words used as class selectors in css files.	A list of class names
columnCount	Number of columns.	minimum: 1
columns	A collection of list box columns	Collection of column objects with defined column properties
contextMenu	Provides the user access to a standard context menu in the selected area.	"automatic", "none"
continuousExecution	Designates whether or not to run the method of an object while the user is tracking the control.	true, false
controlType	Specifies how the value should be rendered in a list box cell.	"input", "checkbox" (for boolean / numeric columns), "automatic", "popup" (only for boolean columns)
currentItemSource	The last selected item in a list box.	Object expression
currentItemPositionSource	The position of the last selected item in a list box.	Number expression
customBackgroundPicture	Sets the picture that will be drawn in the background of a button.	Relative path in POSIX syntax. Must be used in conjunction with the style property with the "custom" option.
customBorderX	Sets the size (in pixels) of the internal horizontal margins of an object. Must be used with the style property with the "custom" option.	minimum: 0
customBorderY	Sets the size (in pixels) of the internal vertical margins of an object. Must be used with the style property with the "custom" option.	minimum: 0
customOffset	Sets a custom offset value in pixels. Must be used with the style property with the "custom" option.	minimum: 0
customProperties	Advanced properties (if any)	JSON string or base64 encoded string
d
dataSource (objects) dataSource (subforms) dataSource (array list box) dataSource (Collection or entity selection list box) dataSource (list box column) dataSource (hierarchical list box)	Specifies the source of the data.	A 4D variable, field name, or an arbitrary complex language expression.
dataSourceTypeHint (objects) dataSourceTypeHint (list box column, drop-down list)	Indicates the variable type.	"integer", "boolean", "number", "picture", "text", date", "time", "arrayText", "arrayDate", "arrayTime", "arrayNumber", "collection", "object", "undefined"
dateFormat	Controls the way dates appear when displayed or printed.	Built-in formats ("systemShort", "systemMedium", "systemLong", "iso8601", "rfc822", "short", "shortCentury", "abbreviated", "long", "blankIfNull") or customized formats
defaultButton	Modifies a button's appearance in order to indicate the recommended choice to the user.	true, false
defaultValue	Defines a value or a stamp to be entered by default in an input object	String or "#D", "#H", "#N"
deletableInList	Specifies if the user can delete subrecords in a list subform	true, false
detailForm (list box) detailForm (subform)	Associates a detail form with a list subform.	Name (string) of table or project form, a POSIX path (string) to a .json file describing the form, or an object describing the form
display	The object is drawn or not on the form.	true, false
doubleClickInEmptyAreaAction	Action to perform in case of a double-click on an empty line of a list subform.	"addSubrecord" or "" to do nothing
doubleClickInRowAction (list box) doubleClickInRowAction (subform)	Action to perform in case of a double-click on a record.	"editSubrecord", "displaySubrecord"
dpi	Screen resolution for the 4D Write Pro area contents.	0=automatic, 72, 96
dragging	Enables dragging function.	"none", "custom", "automatic" (excluding list, list box)
dropping	Enables dropping function.	"none", "custom", "automatic" (excluding list, list box)
e
enterable	Indicates whether users can enter values into the object.	true, false
enterableInList	Indicates whether users can modify record data directly in the list subform.	true, false
entryFilter	Associates an entry filter with the object or column cells. This property is not accessible if the Enterable property is not enabled.	Text to narrow entries
events	List of all events selected for the object or form	Collection of event names, e.g. ["onClick","onDataChange"...].
excludedList	Allows setting a list whose values cannot be entered in the column.	A list of values to be excluded.
f
fill	Defines the background color of an object.	Any CSS value, "transparent", "automatic"
focusable	Indicates whether the object can have the focus (and can thus be activated by the keyboard for instance)	true, false
fontFamily	Specifies the name of font family used in the object.	CSS font family name
fontSize	Sets the font size in points when no font theme is selected	minimum: 0
fontStyle	Sets the selected text to slant slightly to the right.	"normal", "italic"
fontTheme	Sets the automatic style	"normal", "main", "additional"
fontWeight	Sets the selected text to appear darker and heavier.	"normal", "bold"
footerHeight	Used to set the row height	positive decimal + px | em
frameDelay	Enables cycling through the contents of the picture button at the specified speed (in seconds).	minimum: 0
g
graduationStep	Scale display measurement.	minimum: 0
h
header	Defines the header of a list box column	Object with properties "text", "name", "icon", "dataSource", "fontWeight", "fontStyle", "tooltip"
headerHeight	Used to set the row height	positive decimal + px | em
height	Designates an object's vertical size	minimum: 0
hideExtraBlankRows	Deactivates the visibility of extra, empty rows.	true, false
hideFocusRing	Hides the selection rectangle when the object has the focus.	true, false
hideSystemHighlight	Used to specify hiding highlighted records in the list box.	true, false
highlightSet	Name of the set.	string
horizontalLineStroke	Defines the color of the horizontal lines in a list box (gray by default).	Any CSS value, "transparent", "automatic"
i
icon	The pathname of the picture used for buttons, check boxes, radio buttons, list box headers.	Relative or filesystem path in POSIX syntax.
iconFrames	Sets the exact number of states present in the picture.	minimum: 1
iconPlacement	Designates the placement of an icon in relation to the form object.	"none", "left", "right"
imageHugsTitle	Defines whether the title and the picture of the button should be visually adjoined.	true (default), false
k
keyboardDialect	To associate a specific keyboard layout to an input.	A keyboard code string, e.g. "ar-ma"
l
labels	A list of values to be used as tab control labels	ex: "a", "b, "c", ...
labelsPlacement (objects) labelsPlacement (tab control)	Specifies the location of an object's displayed text.	"none", "top", "bottom", "left", "right"
layoutMode	Mode for displaying the 4D Write Pro document in the form area.	"page", "draft", "embedded"
left	Positions an object on the left.	minimum: 0
list, see choiceList	A list of choices associated with a hierarchical list	A list of choices
listboxType	The list box data source.	"array", "currentSelection", "namedSelection", "collection"
listForm	List form to use in the subform.	Name (string) of table or project form, a POSIX path (string) to a .json file describing the form, or an object describing the form
lockedColumnCount	Number of columns that must stay permanently displayed in the left part of a list box.	minimum: 0
loopBackToFirstFrame	Pictures are displayed in a continuous loop.	true, false
m
max	The maximum allowed value. For numeric steppers, these properties represent seconds when the object is associated with a time type value and are ignored when it is associated with a date type value.	minimum: 0 (for numeric data types)
maxWidth	Designates the largest size allowed for list box columns.	minimum: 0
metaSource	A meta object containing style and selection settings.	An object expression
method	A project method name.	The name of an existing project method
methodsAccessibility	Which 4D methods can be called from a Web area	"none" (default), "all"
min	The minimum allowed value. For numeric steppers, these properties represent seconds when the object is associated with a time type value and are ignored when it is associated with a date type value.	minimum: 0 (for numeric data types)
minWidth	Designates the smallest size allowed for list box columns.	minimum: 0
movableRows	Authorizes the movement of rows during execution.	true, false
multiline	Handles multiline contents.	"yes", "no", "automatic"
n
name	The name of the form object. (Optional for the form)	Any name which does not belong to an already existing object
numberFormat	Controls the way the alphanumeric fields and variables appear when displayed or printed.	Numbers (including a decimal point or minus sign if necessary)
p
picture	The pathname of the picture for picture buttons, picture pop-up menus, or static pictures	Relative or filesystem path in POSIX syntax, or "var:<variableName>" for picture variable.
pictureFormat (input, list box column or footer) pictureFormat (static picture)	Controls how pictures appear when displayed or printed.	"truncatedTopLeft", "scaled", "truncatedCenter", "tiled", "proportionalTopLeft" (excluding static pictures), "proportionalCenter"(excluding static pictures)
placeholder	Grays out text when the data source value is empty.	Text to be grayed out.
pluginAreaKind	Describes the type of plug-in.	The type of plug-in.
popupPlacement	Allows displaying a symbol that appears as a triangle in the button, which indicates that there is a pop-up menu attached.	"None", Linked", "Separated"
printFrame	Print mode for objects whose size can vary from one record to another depending on their contents	"fixed", "variable", (subform only) "fixedMultiple"
progressSource	A value between 0 and 100, representing the page load completion percentage in the Web area. Automatically updated by 4D, cannot be modified manually.	minimum: 0
r
radioGroup	Enables radio buttons to be used in coordinated sets: only one button at a time can be selected in the set.	Radio group name
requiredList	Allows setting a list where only certain values can be inserted.	A list of mandatory values.
resizable	Designates if the size of an object can be modified by the user.	"true", "false"
resizingMode	Specifies if a list box column should be automatically resized	"rightToLeft", "legacy"
right	Positions an object on the right.	minimum: 0
rowControlSource	A 4D array defining the list box rows.	Array
rowCount	Sets the number of rows.	minimum: 1
rowFillSource (array list box) rowFillSource (selection or collection list box)	The name of an array or expression to apply a custom background color to each row of a list box.	The name of an array or expression.
rowHeight	Sets the height of list box rows.	CSS value unit "em" or "px" (default).
rowHeightAuto	boolean	"true", "false"
rowHeightAutoMax	Designates the largest height allowed for list box rows.	CSS value unit "em" or "px" (default). minimum: 0
rowHeightAutoMin	Designates the smallest height allowed for list box rows.	CSS value unit "em" or "px" (default). minimum: 0
rowHeightSource	An array defining different heights for the rows in a list box.	Name of a 4D array variable.
rowStrokeSource (array list box) rowStrokeSource (selection or collection/entity selection list box)	An array or expression for managing row colors.	Name of array or expression.
rowStyleSource (array list box) rowStyleSource (selection or collection/entity selection list box)	An array or expression for managing row styles.	Name of array or expression.
s
saveAs (list box column) saveAs (drop-down list)	The type of contents to save in the field or variable associated to the form object	"value", "reference"
scrollbarHorizontal	A tool allowing the user to move the viewing area to the left or right.	"visible", "hidden", "automatic"
scrollbarVertical	A tool allowing the user to move the viewing area up or down.	"visible", "hidden", "automatic"
selectedItemsSource	Collection of the selected items in a list box.	Collection expression
selectionMode (hierarchical list) selectionMode (list box) selectionMode (subform)	Allows the selection of multiple records/rows.	"multiple", "single", "none"
shortcutAccel	Designates the accelerator key (Ctrl Windows/Command macOS).	true, false
shortcutAlt	Designates the Alt key	true, false
shortcutCommand	Designates the Command key (macOS)	true, false
shortcutControl	Designates the Control key (Windows)	true, false
shortcutKey	The letter or name of a special meaning key.	"a", "b",... or "[F1]" -> "[F15]", "[Return]", "[Enter]", "[Backspace]", "[Tab]", "[Esc]", "[Del]", "[Home]", "[End]", "[Help]", "[Page up]", "[Page down]", "[left arrow]", "[right arrow]", "[up arrow]", "[down arrow]"
shortcutShift	Designates the Shift key	true, false
showFooters	Displays or hides column footers.	true, false
showGraduations	Displays/Hides the graduations next to the labels.	true, false
showHeaders	Displays or hides column headers.	true, false
showHiddenChars	Displays/hides invisible characters.	true, false
showHorizontalRuler	Displays/hides the horizontal ruler when the document view is in Page view mode	true, false
showHTMLWysiwyg	Enables/disables the HTML WYSIWYG view	true, false
showPageFrames	Displays/hides the page frame when the document view is in Page view mode	true, false
showReferences	Displays all 4D expressions inserted in the 4D Write Pro document as references	true, false
showSelection	Keeps the selection visible within the object after it has lost the focus	true, false
showVerticalRuler	Displays/hides the vertical ruler when the document view is in Page view mode	true, false
singleClickEdit	Enables direct passage to edit mode.	true, false
sizingX	Specifies if the horizontal size of an object should be moved or resized when a user resizes the form.	"grow", "move", "fixed"
sizingY	Specifies if the vertical size of an object should be moved or resized when a user resizes the form.	"grow", "move", "fixed"
sortable	Allows sorting column data by clicking the header.	true, false
spellcheck	Activates the spell-check for the object	true, false
splitterMode	When a splitter object has this property, other objects to its right (vertical splitter) or below it (horizontal splitter) are pushed at the same time as the splitter, with no stop.	"grow", "move", "fixed"
startPoint	Starting point for drawing a line object (only available in JSON Grammar).	"bottomLeft", topLeft"
staticColumnCount	Number of columns that cannot be moved during execution.	minimum: 0
step	Minimum interval accepted between values during use. For numeric steppers, this property represents seconds when the object is associated with a time type value and days when it is associated with a date type value.	minimum: 1
storeDefaultStyle	Store the style tags with the text, even if no modification has been made	true, false
stroke (text) stroke (lines) stroke (list box)	Specifies the color of the font or line used in the object.	Any CSS value, "transparent", "automatic"
strokeDashArray	Describes dotted line type as a sequence of black and white points	Number array or string
strokeWidth	Designates the thickness of a line.	An integer or 0 for smallest width on a printed form
style	Allows setting the general appearance of the button. See Button Style for more information.	"regular", "flat", "toolbar", "bevel", "roundedBevel", "gradientBevel", "texturedBevel", "office", "help", "circular", "disclosure", "roundedDisclosure", "custom"
styledText	Enables the possibility of using specific styles in the selected area.	true, false
switchBackWhenReleased	Displays the first picture all the time except when the user clicks the button. Displays the second picture until the mouse button is released.	true, false
switchContinuously	Allows the user to hold down the mouse button to display the pictures continuously (i.e., as an animation).	true, false
switchWhenRollover	Modifies the contents of the picture button when the mouse cursor passes over it. The initial picture is displayed when the cursor leaves the button’s area.	true, false
t
table	Table that the list subform belongs to (if any).	4D table name, or ""
text	The title of the form object	Any text
textAlign	Horizontal location of text within the area that contains it.	"automatic", "right", "center", "justify", "left"
textAngle	Modifies the orientation (rotation) of the text area.	0, 90, 180, 270
textDecoration	Sets the selected text to have a line running beneath it.	"normal", "underline"
textFormat	Controls the way the alphanumeric fields and variables appear when displayed or printed.	"### ####", "(###) ### ####", "### ### ####", "### ## ####", "00000", custom formats
textPlacement	Relative location of the button title in relation to the associated icon.	"left", "top", "right", "bottom", "center"
threeState	Allows a check box object to accept a third state.	true, false
timeFormat	Controls the way times appear when displayed or printed.	Built-in formats ("systemShort", "systemMedium", "systemLong", "iso8601", "hh_mm_ss", "hh_mm", "hh_mm_am", "mm_ss", "HH_MM_SS", "HH_MM", "MM_SS", "blankIfNull") or customized formats
truncateMode	Controls the display of values when list box columns are too narrow to show their full contents.	"withEllipsis", "none"
type	Mandatory. Designates the data type of the form object.	"text", "rectangle", "groupBox", "tab", "line", "button", "checkbox", "radio", "dropdown", "combo", "webArea", "write", "subform", "plugin", "splitter", "buttonGrid", "progress", "ruler", "spinner", "stepper", "list", "pictureButton", "picturePopup", "listbox", "input", "view"
tooltip	Provide users with additional information about a field.	Additional information to help a user
top	Positions an object at the top (centered).	minimum: 0
u
urlSource	Designates the the URL loaded or being loading by the associated Web area.	A URL.
useLastFrameAsDisabled	Enables setting the last thumbnail as the one to display when the button is disabled.	true, false
userInterface	4D View Pro area interface.	"none" (default), "ribbon", "toolbar"
v
values	List of default values for an array listbox column	ex: "A","B","42"...
variableCalculation	Allows mathematical calculations to be performed.	"none", "minimum", "maximum", "sum", "count", "average", "standardDeviation", "variance", "sumSquare"
verticalAlign	Vertical location of text within the area that contains it.	"automatic", "top", "middle", "bottom"
verticalLineStroke	Defines the color of the vertical lines in a list box (gray by default).	Any CSS value, "transparent", "automatic"
visibility	Allows hiding the object in the Application environment.	"visible", "hidden", "selectedRows", "unselectedRows"
w
webEngine	Used to choose between two rendering engines for the Web area, depending on the specifics of the application.	"embedded", "system"
width	Designates an object's horizontal size	minimum: 0
withFormulaBar	Manages the display of a formula bar with the Toolbar interface in the 4D View Pro area.	true, false
wordwrap	Manages the display of contents when it exceeds the width of the object.	"automatic" (excluding list box), "normal", "none"
z
zoom	Zoom percentage for displaying 4D Write Pro area	number (minimum=0)