The classes in this namespace can be used to create custom toolbox items, type-specific value editors that can edit and graphically represent values of their supported types, and type converters that can convert values between certain types. This namespace provides the basic frameworks for developing extensions to the design-time UI.

Caution:
Classes within the System.Drawing.Design namespace are not supported for use within a Windows or ASP.NET service. Attempting to use these classes from within one of these application types may produce unexpected problems, such as diminished service performance and run-time exceptions.

Classes

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	Class	Description
	BitmapEditor	Provides a user interface for selecting bitmap files in a property browser.
	CategoryNameCollection	Represents a collection of category name strings.
	ColorEditor	Provides a UITypeEditor for visually picking a color.
	ContentAlignmentEditor	Provides a UITypeEditor for visually editing content alignment.
	CursorEditor	Provides a UITypeEditor that can perform default file searching for cursor (.cur) files.
	FontEditor	Provides a user interface to select and configure a Font object.
	FontNameEditor	Provides a UITypeEditor that paints a glyph for the font name.
	IconEditor	Provides a UITypeEditor for visually choosing an icon.
	ImageEditor	Provides a user interface for selecting an image for a property in a property grid.
	MetafileEditor	Infrastructure. Provides a UITypeEditor that can perform default file searching for metafile (.emf) files.
	PaintValueEventArgs	Provides data for the PaintValue method.
	PropertyValueUIItem	Provides information about a property displayed in the Properties window, including the associated event handler, pop-up information string, and the icon to display for the property.
	ToolboxComponentsCreatedEventArgs	Provides data for the ComponentsCreated event that occurs when components are added to the toolbox.
	ToolboxComponentsCreatingEventArgs	Provides data for the ComponentsCreating event that occurs when components are added to the toolbox.
	ToolboxItem	Provides a base implementation of a toolbox item.
	ToolboxItemCollection	Represents a collection of toolbox items.
	ToolboxItemContainer	Encapsulates a ToolboxItem.
	ToolboxItemCreator	Encapsulates a ToolboxItemCreatorCallback. This class cannot be inherited.
	ToolboxService	Provides a default implementation of the IToolboxService interface.
	UITypeEditor	Provides a base class that can be used to design value editors that can provide a user interface (UI) for representing and editing the values of objects of the supported data types.

Interfaces

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	Interface	Description
	IPropertyValueUIService	Provides an interface to manage the images, ToolTips, and event handlers for the properties of a component displayed in a property browser.
	IToolboxItemProvider	Exposes a collection of toolbox items.
	IToolboxService	Provides methods and properties to manage and query the toolbox in the development environment.
	IToolboxUser	Defines an interface for setting the currently selected toolbox item and indicating whether a designer supports a particular toolbox item.

Delegates

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	Delegate	Description
	PropertyValueUIHandler	Represents the method that adds a delegate to an implementation of IPropertyValueUIService.
	PropertyValueUIItemInvokeHandler	Represents the method that will handle the InvokeHandler event of a PropertyValueUIItem.
	ToolboxComponentsCreatedEventHandler	Represents the method that handles the ComponentsCreated event.
	ToolboxComponentsCreatingEventHandler	Represents the method that handles the ComponentsCreating event.
	ToolboxItemCreatorCallback	Provides a callback mechanism that can create a ToolboxItem.

Enumerations

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	Enumeration	Description
	UITypeEditorEditStyle	Specifies identifiers that indicate the value editing style of a UITypeEditor.