Inside Macintosh: Programmer's Guide to MacApp / Part 2 - Working With MacApp

Chapter 22 -
Working With the Clipboard

This chapter describes MacApp's default Clipboard support and explains how your application can build on that support to handle its own private data types. It also includes recipes and sample code that demonstrate how to

• interact with the Macintosh Clipboard (a general outline)
• create a Clipboard view to display your private data types
• implement Cut, Copy, and Clear commands for your data types
• implement a Paste command for your data types

For an introduction to MacApp's Clipboard support, see "Dependencies," beginning on page 44.

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Chapter Contents

Overview

Basic Clipboard Operations

Using the Desk Scrap

Using the Toolbox GetScrap Routine

Using a Private Scrap

MacApp's Clipboard Support

More Sophisticated Clipboard Support

The Clipboard Manager

Clipboard Support in TCommand

Recipes--The Clipboard

Interacting With the Macintosh Clipboard--A General Outline

Recipe--Creating a Clipboard View for Your Private Data Type

Define a Scrap Type for Your Clipboard Data

Override the MakeViewForAlienClipboard Method

Include the Show Clipboard Command in Your Resource File

Override the WriteToDeskScrap Method of Your View Class

Override the ContainsClipType Method of Your View Class

Override the GivePasteData Method of Your View Class

Recipe--Supporting the Cut, Copy, and Clear Commands

Override DoSetupMenus in Your View Class

Override DoMenuCommand in Your View Class

Define a Command Class to Handle Cut, Copy, and Clear

Implement Constructor and Destructor Methods

Implement an Initialization Method

Implement a DoIt Method

Implement UndoIt and RedoIt Methods

Recipe--Implementing a Paste Command

Override the DoSetupMenus Method in Your View Class

Override the DoMenuCommand Method in Your View Class

Define a Command Class to Handle Paste

Implement Constructor and Destructor Methods

Implement an Initialization Method

Implement a DoIt Method

Implement UndoIt and RedoIt Methods