IDynamicGlyphFactory2 Interface

Provides access to create dynamic glyphs.

Product Availability

Description

This interface is new at ArcGIS 9.3. It supersedes IDynamicGlyphFactory.

Use the dynamic glyph factory singleton object in order to create and delete dynamic glyphs. The dynamic glyphs can be used with the Dynamic Symbols in order to render Dynamic Items.

Members

	Name	Description
	CreateDynamicGlyph	Creates a dynamic glyph from a symbol.
	CreateDynamicGlyphFromBitmap	Create a dynamic glyph from a bitmap handle.
	CreateDynamicGlyphFromFile	Creates a dynamic glyph from a file.
	DeleteDynamicGlyph	Deletes the dynamic glyph's resource.
	DynamicGlyph	Retrieves a dynamic glyph from a glyph group.
	GetCreatedDynamicGlyphSize	Indicates the texture size of the created dynamic glyph.
	Init	Initialize the dynamic glyph factory.
	LoadDynamicGlyphsGroup	Loads a dynamic glyph group from files.
	SetCreatedDynamicGlyphSize	Indicates the texture size of the created dynamic glyph.
	UnloadDynamicGlyphsGroup	Unloads a dynamic glyph group, and any corresponding resources.

Inherited Interfaces

Classes that implement IDynamicGlyphFactory2

Remarks

Dynamic Glyph Factory:

The Dynamic Glyph Factory is a singleton object; therefore you can always co-create it in order to use it to create and delete dynamic glyphs. With Respect to performance, it is preferable to create the dynamic glyphs in the context of the IDynamicLayer’s DrawDynamicLayer method, in the esriDDPImmediate draw phase, or in the context of the IDynamicMapEvents BeforeDynamicDraw or AfterDynamicDraw method, while casting the passed in IDynamicDisplay interface to IDynamicGlyphFactory.

When co-creating the DynamicGlyphFactory singleton in a DotNet application, use the Activator class instead of using the new keyword:

Type t = Type.GetTypeFromProgID("esriCarto.DynamicGlyphFactory");

System.Object dynamicGlyphFactoryObject = Activator.CreateInstance(t);

IDynamicGlyphFactory2 dynamicGlyphFactory = dynamicGlyphFactoryObject as IDynamicGlyphFactory2;

See also: System.__ComObject and casting to strongly typed RCWs

Glyph Groups:

A Dynamic Glyphs Group is a container that holds multiple glyphs. It is composed of a bitmap and a database that holds information about the group and the elements (glyphs and glyphs’ items) in the group. The image is a mosaic of sub-images of icons (marker glyphs), lines (line glyphs), and groups of characters (each group composes a text glyph).
The bitmap holds color information (Red, Green, Blue, and Alpha values) for each pixel. The bitmap can be loaded from two file images - one that holds the RGB values, and a second one that holds the ALPHA values, or from a single file image that holds RGBA values.
The Glyphs Group database is loaded from an XML file. This XML file holds general information about the group, and specific location and size information for each of the items and elements of the group.
A new Glyphs Group can be loaded using the IDynamicGlyphFactory.LoadDynamicGlyphsGroup method.
Glyphs Group ID 1 is reserved to be the default Glyphs Group, and supplies a default set of Dynamic Glyphs.

.NET Samples