docs.unity3d.com
Search Results for

    Show / Hide Table of Contents

    Class HelpBox

    HelpBox UI element.

    Inheritance
    object
    CallbackEventHandler
    Focusable
    VisualElement
    BaseVisualElement
    HelpBox
    Implements
    IEventHandler
    ITransform
    ITransitionAnimations
    IExperimentalFeatures
    IVisualElementScheduler
    IResolvedStyle
    IContextOverrideElement
    IAdditionalDataHolder
    Inherited Members
    BaseVisualElement.contextPrefix
    BaseVisualElement.scaleOverride
    BaseVisualElement.themeOverride
    BaseVisualElement.langOverride
    BaseVisualElement.layoutDirectionOverride
    BaseVisualElement.preferredTooltipPlacementOverride
    BaseVisualElement.tooltipDelayMsOverride
    BaseVisualElement.GetLayoutDirectionUssClassName(Dir)
    VisualElement.disabledUssClassName
    VisualElement.ExecuteDefaultAction(EventBase)
    VisualElement.Focus()
    VisualElement.SendEvent(EventBase)
    VisualElement.SetEnabledFromHierarchy(bool)
    VisualElement.SetEnabled(bool)
    VisualElement.MarkDirtyRepaint()
    VisualElement.ContainsPoint(Vector2)
    VisualElement.Overlaps(Rect)
    VisualElement.DoMeasure(float, VisualElement.MeasureMode, float, VisualElement.MeasureMode)
    VisualElement.ToString()
    VisualElement.GetClasses()
    VisualElement.ClearClassList()
    VisualElement.AddToClassList(string)
    VisualElement.RemoveFromClassList(string)
    VisualElement.ToggleInClassList(string)
    VisualElement.EnableInClassList(string, bool)
    VisualElement.ClassListContains(string)
    VisualElement.FindAncestorUserData()
    VisualElement.Add(VisualElement)
    VisualElement.Insert(int, VisualElement)
    VisualElement.Remove(VisualElement)
    VisualElement.RemoveAt(int)
    VisualElement.Clear()
    VisualElement.ElementAt(int)
    VisualElement.IndexOf(VisualElement)
    VisualElement.Children()
    VisualElement.Sort(Comparison<VisualElement>)
    VisualElement.BringToFront()
    VisualElement.SendToBack()
    VisualElement.PlaceBehind(VisualElement)
    VisualElement.PlaceInFront(VisualElement)
    VisualElement.RemoveFromHierarchy()
    VisualElement.GetFirstOfType<T>()
    VisualElement.GetFirstAncestorOfType<T>()
    VisualElement.Contains(VisualElement)
    VisualElement.FindCommonAncestor(VisualElement)
    VisualElement.viewDataKey
    VisualElement.userData
    VisualElement.canGrabFocus
    VisualElement.focusController
    VisualElement.usageHints
    VisualElement.transform
    VisualElement.layout
    VisualElement.contentRect
    VisualElement.paddingRect
    VisualElement.worldBound
    VisualElement.localBound
    VisualElement.worldTransform
    VisualElement.pickingMode
    VisualElement.name
    VisualElement.enabledInHierarchy
    VisualElement.enabledSelf
    VisualElement.visible
    VisualElement.generateVisualContent
    VisualElement.experimental
    VisualElement.hierarchy
    VisualElement.cacheAsBitmap
    VisualElement.parent
    VisualElement.panel
    VisualElement.contentContainer
    VisualElement.visualTreeAssetSource
    VisualElement.this[int]
    VisualElement.childCount
    VisualElement.schedule
    VisualElement.style
    VisualElement.customStyle
    VisualElement.styleSheets
    VisualElement.tooltip
    VisualElement.resolvedStyle
    Focusable.Blur()
    Focusable.focusable
    Focusable.tabIndex
    Focusable.delegatesFocus
    CallbackEventHandler.RegisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)
    CallbackEventHandler.RegisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TUserArgsType, TrickleDown)
    CallbackEventHandler.UnregisterCallback<TEventType>(EventCallback<TEventType>, TrickleDown)
    CallbackEventHandler.UnregisterCallback<TEventType, TUserArgsType>(EventCallback<TEventType, TUserArgsType>, TrickleDown)
    CallbackEventHandler.HandleEvent(EventBase)
    CallbackEventHandler.HasTrickleDownHandlers()
    CallbackEventHandler.HasBubbleUpHandlers()
    CallbackEventHandler.ExecuteDefaultActionAtTarget(EventBase)
    object.Equals(object)
    object.Equals(object, object)
    object.GetHashCode()
    object.GetType()
    object.MemberwiseClone()
    object.ReferenceEquals(object, object)
    Namespace: Unity.AppUI.UI
    Assembly: Unity.AppUI.dll
    Syntax
    public class HelpBox : BaseVisualElement, IEventHandler, ITransform, ITransitionAnimations, IExperimentalFeatures, IVisualElementScheduler, IResolvedStyle, IContextOverrideElement, IAdditionalDataHolder

    Constructors

    HelpBox()

    Default constructor.

    Declaration
    public HelpBox()

    HelpBox(string, AlertSemantic, string)

    Constructor with a message and optional variant.

    Declaration
    public HelpBox(string msg, AlertSemantic variant = AlertSemantic.Information, string icon = "info")
    Parameters
    Type Name Description
    string msg

    The message to display.

    AlertSemantic variant

    The semantic variant controlling the color scheme.

    string icon

    The icon name to display.

    Fields

    iconUssClassName

    The HelpBox icon styling class.

    Declaration
    public const string iconUssClassName = "appui-helpbox__icon"
    Field Value
    Type Description
    string

    messageUssClassName

    The HelpBox message styling class.

    Declaration
    public const string messageUssClassName = "appui-helpbox__message"
    Field Value
    Type Description
    string

    sizeUssClassName

    The HelpBox size styling class.

    Declaration
    public const string sizeUssClassName = "appui-helpbox--size-"
    Field Value
    Type Description
    string

    ussClassName

    The HelpBox main styling class.

    Declaration
    public const string ussClassName = "appui-helpbox"
    Field Value
    Type Description
    string

    variantUssClassName

    The HelpBox variant styling class.

    Declaration
    public const string variantUssClassName = "appui-helpbox--"
    Field Value
    Type Description
    string

    Properties

    iconName

    The name of the icon displayed in the HelpBox.

    Declaration
    public string iconName { get; set; }
    Property Value
    Type Description
    string

    message

    The message displayed inside the HelpBox.

    Declaration
    public string message { get; set; }
    Property Value
    Type Description
    string

    size

    The size of the HelpBox, which controls the size of the icon and the message text.

    Declaration
    public Size size { get; set; }
    Property Value
    Type Description
    Size

    variant

    The semantic variant which controls the color scheme of the HelpBox.

    Declaration
    public AlertSemantic variant { get; set; }
    Property Value
    Type Description
    AlertSemantic

    Methods

    GetSizeUssClassName(Size)

    Declaration
    public static string GetSizeUssClassName(Size enumValue)
    Parameters
    Type Name Description
    Size enumValue
    Returns
    Type Description
    string

    GetVariantUssClassName(AlertSemantic)

    Declaration
    public static string GetVariantUssClassName(AlertSemantic enumValue)
    Parameters
    Type Name Description
    AlertSemantic enumValue
    Returns
    Type Description
    string

    Implements

    IEventHandler
    ITransform
    ITransitionAnimations
    IExperimentalFeatures
    IVisualElementScheduler
    IResolvedStyle
    IContextOverrideElement
    IAdditionalDataHolder

    Extension Methods

    VisualElementExtensions.FindNavController(VisualElement)
    RegisterUpdateCallbackExtensions.RegisterUpdateCallback(VisualElement, EventCallback<UpdateEvent>)
    RegisterUpdateCallbackExtensions.UnregisterUpdateCallback(VisualElement, EventCallback<UpdateEvent>)
    VisualElementExtensions.EnableDynamicTransform(VisualElement, bool)
    VisualElementExtensions.EnablePicking(VisualElement, bool)
    VisualElementExtensions.GetChildren<T>(VisualElement, bool)
    VisualElementExtensions.GetContextProvider<T>(VisualElement)
    VisualElementExtensions.GetContextProvider<T>(VisualElement, string)
    VisualElementExtensions.GetContext<T>(VisualElement)
    VisualElementExtensions.GetContext<T>(VisualElement, string)
    VisualElementExtensions.GetExclusiveRootElement(VisualElement)
    VisualElementExtensions.GetLastAncestorOfType<T>(VisualElement)
    VisualElementExtensions.GetPreferredTooltipPlacement(VisualElement)
    VisualElementExtensions.GetSelfContext<T>(VisualElement)
    VisualElementExtensions.GetSelfContext<T>(VisualElement, string)
    VisualElementExtensions.GetTooltipContent(VisualElement)
    VisualElementExtensions.GetTooltipTemplate(VisualElement)
    VisualElementExtensions.HasAncestorOfType<T>(VisualElement, bool)
    VisualElementExtensions.HasAncestorsOfType<T>(VisualElement)
    VisualElementExtensions.IsContextProvider<T>(VisualElement)
    VisualElementExtensions.IsContextProvider<T>(VisualElement, string)
    VisualElementExtensions.IsInvisible(VisualElement)
    VisualElementExtensions.IsOnScreen(VisualElement)
    VisualElementExtensions.ProvideContext<T>(VisualElement, string, T)
    VisualElementExtensions.ProvideContext<T>(VisualElement, T)
    VisualElementExtensions.RegisterContextChangedCallback<T>(VisualElement, string, EventCallback<ContextChangedEvent<T>>)
    VisualElementExtensions.RegisterContextChangedCallback<T>(VisualElement, EventCallback<ContextChangedEvent<T>>)
    VisualElementExtensions.SetPreferredTooltipPlacement(VisualElement, OptionalEnum<PopoverPlacement>)
    VisualElementExtensions.SetTooltipContent(VisualElement, VisualElementExtensions.TooltipContentCallback)
    VisualElementExtensions.SetTooltipTemplate(VisualElement, VisualElement)
    VisualElementExtensions.UnregisterContextChangedCallback<T>(VisualElement, string, EventCallback<ContextChangedEvent<T>>)
    VisualElementExtensions.UnregisterContextChangedCallback<T>(VisualElement, EventCallback<ContextChangedEvent<T>>)
    In This Article
    Back to top
    Copyright © 2026 Unity Technologies — Trademarks and terms of use
    • Legal
    • Privacy Policy
    • Cookie Policy
    • Do Not Sell or Share My Personal Information
    • Your Privacy Choices (Cookie Settings)