Inside Macintosh: Imaging With QuickDraw /

Chapter 8 - Cursor Utilities

This chapter describes the utilities that your application uses to draw and manipulate the cursor on the screen. You should read this chapter to find out how to implement cursors in your application. For example, you should change the arrow cursor to an I-beam cursor when it's over text and to an animated cursor when a medium-length process is under way.

Cursors are defined in resources; the routines in this chapter automatically call the Resource Manager as necessary. For more information about resources, see the chapter "Resource Manager" in Inside Macintosh: More Macintosh Toolbox. Color cursors are defined in resources as well, though they use Color QuickDraw. For information about Color QuickDraw, see the chapter "Color QuickDraw" in this book.

This chapter describes how to

• create and display black-and-white and color cursors
• change the cursor's shape over different areas on the screen
• display an animated cursor

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Chapter Contents

About the Cursor

Using the Cursor Utilities

Initializing the Cursor

Changing the Appearance of the Cursor

Creating an Animated Cursor

Cursor Utilities Reference

Data Structures

Routines

Initializing Cursors

Changing Black-and-White Cursors

Changing Color Cursors

Hiding and Showing Cursors

Displaying Animated Cursors

Resources

The Cursor Resource

The Color Cursor Resource

The Animated Cursor Resource

Summary of Cursor Utilities

Pascal Summary

Constants

Data Types

Routines

C Summary

Constants

Data Types

Functions

Assembly-Language Summary

Data Structures

Global Variables