# API Notes: ScreenSaver framework

The full API is described in Apple’s documentation, both the C and Objective-C APIs are available (but see the API Notes below).

These bindings are accessed through the `ScreenSaver` package (that is, `import ScreenSaver`).

## API Notes

The PyObjC bindings for the ScreenSaver framework are complete.

## Platform limitations

Screen savers are plugins for the screen saver engine, this means that a screen saver must contain compiled C code for the correct architectures.

On macOS 10.6 and macOS 10.7 you cannot use PyObjC to write a screen saver because the screen saver engine uses Objetive-C Garbage Collection and that is not supported by PyObjC.

Screen savers work again in OS X 10.8.

For OSX 10.6 or later on Intel CPUs the binary must contain support for the x86_64 (64-bit Intel) code, on earlier OSX releases support for i386 (32-bit Intel) is needed.

See the section on “Binary Compatibility” in Apple’s documentation for more information.