Coding the native side with C

Some devices use the C programming language in their native implementations. If you are targeting your native extension for such a device, use the native extensions C API to code the native side of your extension.

The C API is in the file FlashRuntimeExtensions.h. The file is available in the AIR SDK in the include directory. The AIR SDK is available at http://www.adobe.com/products/air/sdk/.

The AIR runtime connects the ActionScript side of an extension to the native side of the extension.

Using the C API, you do the following tasks:

• Initialize the extension.

• Initialize each extension context when it is created.

• Define functions that the ActionScript side can call.

• Dispatch events to the ActionScript side.

• Access data passed from the ActionScript side, and pass data back to the ActionScript side.

• Create and access context-specific native data and context-specific ActionScript data.

• Clean up extension resources when the extension’s work is done.

For details about each C API function, such as parameters and return values, see Native C API Reference.

For examples of native extensions that use the C API, see Native extensions for Adobe AIR.

• Extension initialization
• Extension context initialization
• Context-specfic data
• Extension context finalization
• Extension finalization
• Extension functions
• Dispatching asynchronous events
• The FREObject type
• Working with ActionScript primitive types and objects
• Threads and native extensions

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