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https://api-docs.avaloniaui.netTechnical API reference for Avalonia UI, covering namespaces such as Avalonia.Controls, Avalonia.Media, Avalonia.Input, and Avalonia.Markup. Includes detailed definitions for controls like TreeView, SplitButton, and VirtualizingStackPanel, as well as media geometries, XAML markup extensions, and windowing base classes.
FormattedText class in the Avalonia.Media namespace is used by developers to add simple text to a MIL (Media Independent Layer) visual. It is contained within the Avalonia.Base assembly.public class FormattedTextDataGridColumn class is an abstract base class in the Avalonia.Controls namespace (contained in the Avalonia.Controls.DataGrid.dll assembly). It provides the core functionality for columns within a DataGrid. Common derived classes include DataGridBoundColumn and DataGridTemplateColumn.public abstract class DataGridColumn : AvaloniaObjectStyledElement class extends Animatable and serves as a base class for elements that require styling capabilities, data context inheritance, and participation in the logical tree. It implements several key interfaces including IStyleable for styling, ILogical for logical tree structure, and IResourceHost for resource management.public class StyledElement : Animatable,
IDataContextProvider, ILogical, IThemeVariantHost, IResourceHost, IResourceNode,
IStyleHost, ISetLogicalParent, ISetInheritanceParent, ISupportInitialize, INamed,
IStyleableRoundedRect struct in the Avalonia namespace (Assembly: Avalonia.Base.dll) represents a rectangle with rounded corners. It inherits from ValueType and is used to define bounds with specific corner radii.public struct RoundedRectColorSlider is a specialized Slider located in the Avalonia.Controls.Primitives namespace (Assembly: Avalonia.Controls.ColorPicker.dll). It is designed to represent a single color component via a slider with a background that visually reflects the color component being adjusted. It inherits from Slider and RangeBase, meaning it supports all standard slider functionality for numeric range input.using Avalonia.Controls.Primitives;
// Example instantiation
var colorSlider = new ColorSlider();GestureRecognizer is an abstract base class in the Avalonia.Input.GestureRecognizers namespace (contained in the Avalonia.Base assembly). It inherits from StyledElement and serves as the foundation for implementing gesture recognition logic in Avalonia UI. Common derived implementations include ScrollGestureRecognizer, PinchGestureRecognizer, and PullGestureRecognizer.public abstract class GestureRecognizer : StyledElementSliderAutomationPeer class in the Avalonia.Controls.Automation.Peers namespace is used to provide automation accessibility for Slider controls. It inherits functionality from RangeBaseAutomationPeer, ControlAutomationPeer, and AutomationPeer, allowing it to interact with automation clients to report property changes, manage focus, and handle range-based values.The ThumbAutomationPeer class inherits the following events from AutomationPeer to notify automation tools about changes in the UI element's state:
ChildrenChanged: Triggered when the children of the automation peer have changed.PropertyChanged: Triggered when a property value of the automation peer has changed.Underline element in the Avalonia.Controls.Documents namespace is a markup helper used to indicate underlined content. It is functionally equivalent to using a Span with the TextDecorations property set to TextDecorations.Underlined. It can contain other inline elements.public sealed class Underline : SpanWindowBase.Screens property provides access to the platform-specific screens implementation, allowing developers to retrieve information about the displays available to the application.The IStorageItem interface in the Avalonia.Platform.Storage namespace is used to manipulate storage items (files and folders) and their contents, and to retrieve information about them. Because it inherits from IDisposable, it is recommended to dispose of IStorageItem instances when they are no longer needed.
Important Implementation Note: This interface is marked with [NotClientImplementableAttribute]. It is not intended to be implemented by clients unless PrivateApi is enabled.
using Avalonia.Platform.Storage;
// IStorageItem is used to represent a file or folder
public interface IStorageItem : IDisposable
{
// Interface members
}PathIcon class, located in the Avalonia.Controls namespace within the Avalonia.Controls.dll assembly, is used to render vector icons based on path data. It inherits from IconElement, which in turn inherits from TemplatedControl and Control.public class PathIcon : IconElement