Extending the User Interface

Extending the User Interface

As an overview of the classes that you can use to extend the user interface, this topic serves as an introduction to the following example.

About Extensions

General information about creating Extension classes and just-in-time (JIT) extensions.

Commands And Tools Example

The first example project in this section provides an example of how to create the basic building blocks of many customizations. You may be aware that the creation of custom commands and tools is covered already in the ArcGIS Desktop Developer Guide and ArcGIS Engine Developer Guide, and various samples exist for command and tool classes in the Samples section of the ArcGIS developer help. However, commands, tools, extensions, and so on, are used in many examples throughout Extending ArcObjects, and so a review of creating basic custom commands and tools are also covered in this section.

In this example you can find the following customizations, which are part of an example extension class:

• Creating a Button: Creating a basic button (or command) by implementing ICommand.
• Creating a Subtyped Command: Creating a basic subtyped command (group of related commands) by implementing ICommand and ICommandSubtype.
• Creating a Tool: Creating a basic tool by implementing ITool and ICommand.
• Creating a ToolControl: Creating a basic toolcontrol by implementing ICommand and IToolControl.
• Creating a MultiItem: Creating a dynamic menu item, which appears as zero or more adjacent menu items on a menu, by implementing IMultiItem and IMultiItemEx.
• Creating a Menu: Creating a custom menu by implementing IMenuDef.
• Creating a Toolbar: Creating a custom toolbar by implementing IToolbarDef.
• Creating an Extension: Creating a an Extension by implementing IExtension and IExtensionConfig.

DDE Handler

DDE Handler Example

An example demonstrating how you can create a class to handle incoming DDE calls to ArcMap.

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