Details and Options

• The following are possible types:
• Boxesraw boxes Expressionexpression (default) Hold[Expression]expression in held form Numbernumber Stringstring
• The setting for the input field is not updated until its contents are explicitly entered, typically by pressing or by moving focus away from the input field.
• If the data given in the input field cannot be converted to the type specified, then the setting for the input field will not be updated.
• For String and Boxes types the conversion can always be done.
• For expressions, a blank input field is taken to have value Null. For strings and boxes, it is taken to have value "".
• moves between input fields.
• The following options can be given:
• Appearance Automaticthe overall appearance of the input field BackgroundAutomaticinput field background color BaselinePosition Automatichow to align with a surrounding text baseline BaseStyle {}base style specifications for the input field ContentPadding Truewhether to shrink the margins tightly around the contents ContinuousAction Falsewhether to update continuously every time any change is made to the input Enabled Automaticwhether the input field is enabled or grayed out FieldCompletionFunction Automaticfunction that takes the current value of the input field and returns possible completions FieldHint Nullexpression to display when the input field is empty FieldHintStyle {}style to apply to the field hint FieldMasked Falsewhether to mask characters in the input field FieldSize {{20., 20.},{1.,Infinity}}the size of the input field FrameMargins Automaticminimum margins to leave inside the frame ImageMargins 0margins around the image of the displayed input field ImageSize Automaticthe overall image size of the displayed input field
• An InputField of type Expression replaces its contents with the fully evaluated form every time the contents are updated. ContinuousAction has no effect on such an InputField, so that no disorienting replacements happen while typing inputs.
• Possible settings for Appearance include "Framed" and "Frameless".
• InputField[] is equivalent to InputField[Null].
• The settings for BaseStyle are appended to the default style typically given by the "InputField" style in the current stylesheet.

Examples

Basic Examples  (2)

Dynamically update the variable via the InputField:

Restrict the input to a specific type:

Scope  (2)

Use to move between input fields:

The input field will not be updated if the input is not of the specified type:

Options  (16)

Appearance  (1)

Display InputField without a frame:

BaselinePosition  (1)

Align InputField with text:

BaseStyle  (1)

Use a named style:

ContentPadding  (1)

Create an input field that is exactly as tall as its contents:

ContinuousAction  (2)

By default, variables are not continuously updated:

Setting ContinuousAction makes variable updates whenever a change is made to the input:

Enabled  (2)

By default, InputField is enabled:

By setting Enabled->False, the field is disabled but visible in its current state:

FieldCompletionFunction  (1)

Create an input field that offers completions of all matching System` functions:

FieldHint  (1)

Display a prompt in an empty input field:

FieldHintStyle  (1)

Display the field hint in a different color:

FieldMasked  (1)

Create a password-style input field:

FieldSize  (1)

Alter the field width:

Adjust the height and width:

FrameMargins  (1)

Set a large internal margin for an input field:

ImageMargins  (1)

Add margins outside the input field:

ImageSize  (1)

Set the width of the field:

Set the overall size of the field:

Applications  (1)

Plot any function:

Properties & Relations  (1)

Manipulator is constructed with InputField:

Possible Issues  (4)

InputField will remain unevaluated if the expression does not match the type:

Use a cleared Dynamic variable to create an empty input field that only accepts numbers:

Null indicates no value in an input field of style Boxes:

The box representation of the symbol Null is the string "Null":

Null in an Expression style input field produces an empty result: