Mac OS applications typically interact with users via windows on the screen. You can use the Window Manager to create, display, and manage the drawing and behavior of windows.
This document describes the Window Manager application programming interface (API) introduced with Mac OS 8.5 and Appearance Manager 1.1. Preexisting Window Manager functionality is not discussed in this document. For a description of the Mac OS 8 Window Manager API, see Mac OS 8 Window Manager Reference. For descriptions of the pre-Mac OS 8 Window Manager API, see Inside Macintosh: Macintosh Toolbox Essentials.
See the following sections for descriptions of various features of the Mac OS 8.5 Window Manager.