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Inside Macintosh: More Macintosh Toolbox /

Chapter 2 - Scrap Manager / Scrap Manager Reference

Data Structures

The Scrap Format Types

Data in the scrap is defined by a scrap format type, a four-character sequence that defines the type of data.

TYPE  ResType = PACKED ARRAY[1..4] OF Char;

The standard scrap format types are

• 'TEXT': a series of ASCII characters
• 'PICT': a QuickDraw picture, which is a saved sequence of QuickDraw commands that can be displayed using the DrawPicture procedure

Optional scrap format types include

• 'styl': a series of bytes that have the same format as a TextEdit 'styl' resource and that describe styled text data
• 'snd ': a series of bytes that have the same format as an 'snd ' resource and that define a sound
• 'movv': a series of bytes that have the same format as an 'movv' resource and that define a movie

Your application should support the 'TEXT' and 'PICT' scrap format types and should optionally support any other scrap format types (such as 'snd ') that are appropriate to your application.

In general, when your application writes data to the scrap, the Scrap Manager appends the data to the scrap in this format:

Number of bytes	Contents
4	Scrap format type
4	Length of following data in bytes
n	Data; n must be even