探索PowerPoint .ppt文件二进制格式：2003版本详解

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PowerPoint (.ppt) Binary File Format 是一种专用于Microsoft Office 2003及后续版本的文档结构规范，特别是针对PowerPoint演示文稿（.ppt）文件的二进制存储格式。这份文档是Microsoft Corporation发布的开放规格文档，于2017年12月12日更新，旨在详细解释PowerPoint文件的数据结构、协议、文件格式以及数据兼容性。以下是关键知识点的详细解析： 1. **文档背景**: 这份文档属于[MS-PPT]系列标准之一，专门针对PowerPoint文件的二进制格式进行深入剖析。它不仅是技术文档，还涵盖了不同协议之间的关系和交互，使得开发者能够理解和实现跨平台或跨版本的文件处理。 2. **版权声明**: Microsoft拥有该文档的版权，但允许用户出于开发目的复制和使用。只要在实施过程中使用描述的技术，并在适当的情况下分发部分文档，如为了正确记录技术实现，或者在提供技术实现的文档中包含相关schema、IDL（接口定义语言）或代码示例，都可以在不修改的情况下进行分发。 3. **文件结构**: .ppt文件的二进制格式包含了一系列的组织单元，如元数据、幻灯片内容、图片、音频和视频等元素的存储位置和编码方式。了解这些结构对于解析、转换和编辑PowerPoint文件至关重要。 4. **兼容性与移植性**: 该文档有助于开发者创建能够兼容不同版本PowerPoint（如2003到最新版）的应用程序，确保数据在不同软件间的无缝迁移。这对于软件开发者来说是一个重要的参考，可以提升应用程序的通用性和用户体验。 5. **API接口**: 通过阅读这份文档，开发者能够了解PowerPoint文件访问所需的底层API接口，以便实现功能如读取、编辑、保存和创建新文件。这涉及到对PowerPoint对象模型（OMM）的理解和应用。 6. **知识产权注意事项**: 当处理此开放规格文档时，务必遵守Microsoft的版权条款，尊重其知识产权，确保合法合规地使用和传播技术细节。总结来说，PowerPoint (.ppt) Binary File Format文档为开发者提供了开发工具和应用扩展的关键信息，帮助他们构建与Microsoft Office PowerPoint兼容的高效工具和解决方案。无论是为了实现跨平台协作，还是优化PowerPoint文件的处理性能，这份文档都是不可或缺的参考资料。

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[MS-PPT] - v20171212

PowerPoint (.ppt) Binary File Format

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code page: An ordered set of characters of a specific script in which a numerical index (code-point

value) is associated with each character. Code pages are a means of providing support for

character sets and keyboard layouts used in different countries. Devices such as the display and

keyboard can be configured to use a specific code page and to switch from one code page (such

as the United States) to another (such as Portugal) at the user's request.

color scheme: A table of color values that enables colors to be referenced by an index value in the

table instead of a color value. See also color palette.

color space: A system that describes color numerically by mapping color components to a

multidimensional coordinate system. The number of dimensions is typically two, three, or four.

For example, if colors are expressed as a combination of the three components red, green, and

blue, a three-dimensional space can describe all possible colors. Grayscale colors can be mapped

to a two-dimensional color space. If transparency is considered a component, four dimensions

are appropriate. Also referred to as color model.

computer name: The DNS or NetBIOS name.

container record: A record that defines the structure and hierarchy of atom records and other

container records.

cyclic redundancy check (CRC): An algorithm used to produce a checksum (a small, fixed

number of bits) against a block of data, such as a packet of network traffic or a block of a

computer file. The CRC is a broad class of functions used to detect errors after transmission or

storage. A CRC is designed to catch random errors, as opposed to intentional errors. If errors

might be introduced by a motivated and intelligent adversary, a cryptographic hash function

should be used instead.

encrypted document: A document that was converted from plaintext into cipher text to disguise

the content of the document when it is stored or sent.

envelope: A container that stores the information that is used to send a document, workbook, or

presentation in an email message. The information includes the intended recipients, the subject

of the email message, and any attachments to be included.

external object: An object such as a movie file, audio file, OLE object, or hyperlink that can be

associated with a presentation or document.

floating-point number: A number that is represented by a mantissa and an exponent according

to a given base. The mantissa is typically a value between "0" and "1". To find the value of a

floating-point number, the base is raised to the power of the exponent, and the mantissa is

multiplied by the result.

footer: One or more lines of text in the bottom margin area of a page in a document or a slide in a

presentation. A footer typically contains elements such as the page number and the name of the

file.

grid unit: A unit of linear measurement that is equal to 1/1024 master unit or 1/589824 inch.

guide: A vertical or a horizontal line that can be set as part of the user interface to position and

align content on a slide.

handout master slide: A slide that defines layout and positioning information for handout pages,

which are pages that are optimized for printing a presentation.

handout slide: A slide that is taken from a presentation and then printed and distributed to the

audience of the presentation. Users can select the number of slides to be printed on each page

in a handout.

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header: A line, or lines, of content in the top margin area of a page in a document or a slide in a

presentation. A header typically contains elements such as the title of the chapter, the title of

the document, a page number, or the name of the author.

hue-saturation-luminance (HSL): A color model that defines a color by using three dimensions:

hue, the color itself; saturation, the purity of the color; and luminance, the amount of light that

is either reflected or absorbed by the color. See also color scheme and color space.

hyperlink: A relationship between two anchors, as described in [RFC1866].

kiosk mode: A display mode in which a single window expands to fill the whole screen. In kiosk

mode, the toolbar and menu bar are not displayed, and the desktop is inaccessible.

little-endian: Multiple-byte values that are byte-ordered with the least significant byte stored in

the memory location with the lowest address.

macro: A set of instructions that are recorded or written, and then typically saved to a file. When a

macro is run, all of the instructions are performed automatically.

main master slide: A slide that defines the formatting and content that can be used by

presentation slides. If a slide uses formatting and content from a main master slide, it is

referred to as following a main master slide.

master unit: A unit of linear measurement that is equal to 1/576 inch.

Media Control Interface (MCI): A part of the Windows API that enables an application to control

multimedia devices. The term is also used to generically describe any media object that can be

played through the interface.

metafile: A file that stores an image as graphical objects, such as lines, circles, and polygons,

instead of pixels. A metafile preserves an image more accurately than pixels when an image is

resized.

Musical Instrument Digital Interface (MIDI): A specification of the MIDI Manufacturers

Association (MMA). The specification for Musical Instrument Digital Interface (MIDI) defines a

protocol for describing music data, such as note on and note off messages; a file format for

storing music data, called Standard MIDI; and a standard hardware interface.

named show: A named sequence of slides that can be displayed as a slide show.

notes master slide: A slide that defines the formatting and content that can be used by notes

slides for a presentation. If a notes slide uses formatting and content from a notes master slide,

it is referred to as following a notes master slide.

notes slide: A slide that contains presentation notes or other information that is not displayed

during a slide show. The formatting and content of a notes slide can derive from a notes master

slide.

Object Linking and Embedding (OLE): A technology for transferring and sharing information

between applications by inserting a file or part of a file into a compound document. The inserted

file can be either embedded or linked. See also embedded object and linked object.

OLE compound file: A form of structured storage, as described in [MS-CFB]. A compound file

allows independent storages and streams to exist within a single file.

OLE object: An object that supports the Object Linking and Embedding (OLE) protocol.

OLE verb: An action defined by an OLE-linked object that specifies what behaviors can be applied

to it.

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persist object: A top-level object that can be independently persisted and that forms the basis of

an incremental save model. A persist object is one of the following: presentation document,

main master slide, title master slide, handout master slide, notes master slide, presentation

slide, notes slide, OLE object storage, or Microsoft Visual Basic for Applications (VBA) project

storage.

persist object directory: A table of persist object identifiers and stream offsets to where persist

objects can be found. Each user edit stores a persist object directory that identifies where any

new and modified persist objects can be found.

persist object identifier: A unique identifier that is associated with a persist object and is stored

in a persist object directory.

placeholder: A character or symbol that is used in place of an actual value, text, or object. The

actual value that the placeholder represents is unknown or unavailable at the current time, or is

not displayed for security reasons.

placeholder shape: A special type of shape in a presentation that usually includes common visual

properties. These are used to effect a uniform look among different slides, or to uniformly

represent meta-information about each slide.

point: A unit of measurement for fonts and spacing. A point is equal to 1/72 of an inch.

Portable Network Graphics (PNG): A bitmap graphics file format that uses lossless data

compression and supports variable transparency of images (alpha channels) and control of

image brightness on different computers (gamma correction). PNG-format files have a .png file

name extension.

presentation: A collection of slides that are intended to be viewed by an audience.

presentation broadcast: A feature that enables users to run a presentation over the web. The

presentation is saved in HTML format and can contain audio and video. It can also be recorded

and saved for viewing later.

presentation comment: A text note that is attached to a slide to enable readers of a presentation

to provide feedback to the presentation author.

presentation slide: A slide that contains the content that can be displayed during a slide show. A

presentation slide can derive formatting and content from a main master slide or a title master

slide.

programmable tag: A name/value pair. The value can be either a Unicode string or binary data.

red-green-blue (RGB): A color model that describes color information in terms of the red (R),

green (G), and blue (B) intensities in a color.

routing slip: Information that specifies how a document is to be distributed from a document

originator and processed by one or more recipients. It also specifies subject and message body

text that is associated with the document routing process and routing status or workflow

information.

seed: A value that is greater than or equal to all other values in a set of values and is used to

create the next value in the set.

shape: A collection of qualifiers, such as names, and quantifiers, such as coordinates, that is used

to represent a geometric object. A shape can be contained in a document, file structure, run-

time structure, or other medium.

shape identifier: An integer that corresponds to a shape object or an instantiation of a shape

object.

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slide: A frame that contains text, shapes, pictures, or other content. A slide is a digital equivalent

to a traditional film slide.

slide layout: An organizational scheme, such as Title Only or Comparison, for content on a

presentation slide.

slide show: A delivery of a sequence of presentation slides, typically to an audience.

smart tag: A feature that adds the ability to recognize and label specific data types, such as

people's names, within a document and displays an action button that enables users to perform

common tasks for that data type.

sound identifier: A unique identifier for an embedded or linked sound.

table object: A group of shapes that are arranged in rows and columns to form a table.

text ruler: A collection of settings for tabs, margins, and indentation of text. See also ruler.

time condition: A logical condition that can be evaluated, or an event that can be triggered, to

determine whether timed object behavior starts or ends. Conditions include items such as the

start or end of time nodes, keyboard presses, mouse clicks, or delegate events. See also time

node.

time node: A record or parent node that stores the information that is necessary to cause a time-

or action-based effect to occur. Each time node has a corresponding object to which an effect is

applied. It can be used randomly, simultaneously, or sequentially, and it can be used to specify

certain time-based effects between objects that are being animated. Effects include visual and

media behaviors.

title master slide: A slide that defines the formatting and content that can be used by

presentation slides that have a title slide layout. If a slide uses formatting and content from a

title master slide, it is referred to as following a title master slide.

Unicode: A character encoding standard developed by the Unicode Consortium that represents

almost all of the written languages of the world. The Unicode standard [UNICODE5.0.0/2007]

provides three forms (UTF-8, UTF-16, and UTF-32) and seven schemes (UTF-8, UTF-16, UTF-16

BE, UTF-16 LE, UTF-32, UTF-32 LE, and UTF-32 BE).

Uniform Resource Locator (URL): A string of characters in a standardized format that identifies

a document or resource on the World Wide Web. The format is as specified in [RFC1738].

Universal Naming Convention (UNC): A string format that specifies the location of a resource.

For more information, see [MS-DTYP] section 2.2.57.

user edit: A set of persist objects and a persist object directory that represent changes made by a

user. Each time a file is written, a user edit that contains only those persist objects that are new

or modified from the previous user edit can be appended to the pre-existing record stream. The

persist objects and the persist object directory in a later user edit supersede those in a previous

user edit.

VBA project: A collection of the modules, class modules, and user forms that are needed to create

an application. Modules, class modules, and user forms can be imported into and exported from

a project.

Vector Markup Language (VML): A system of marking up or tagging two-dimensional vector

graphics for publication on the World Wide Web. VML graphics are scalable and editable, and

typically require less disk space and less time to download.

Visual Basic for Applications (VBA): A macro-based programming language that derives from

Microsoft Visual Basic and can be used to customize and extend an application. Unlike Visual

Basic, VBA code and macros can be run only from within a host application that supports VBA.

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waveform (WAV): A file format in which Windows stores sounds as waveforms. Depending on the

sampling frequency, whether the sound is monaural or stereo, and whether 8 or 16 bits are

used for each sample, one minute of sound can occupy as little as 644 kilobytes or as much as

27 megabytes of storage. Waveform files have a .wav file name extension.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined

in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.

1.2 References

Links to a document in the Microsoft Open Specifications library point to the correct section in the

most recently published version of the referenced document. However, because individual documents

in the library are not updated at the same time, the section numbers in the documents may not

match. You can confirm the correct section numbering by checking the Errata.

1.2.1 Normative References

We conduct frequent surveys of the normative references to assure their continued availability. If you

have any issue with finding a normative reference, please contact dochelp@microsoft.com. We will

assist you in finding the relevant information.

[ECMA-376] ECMA International, "Office Open XML File Formats", 1st Edition, ECMA-376, December

2006, http://www.ecma-international.org/publications/standards/Ecma-376.htm

[Embed-Open-Type-Format] Nelson, P., "Embedded OpenType (EOT) File Format", W3C Member

Submission, March 2008, http://www.w3.org/Submission/2008/SUBM-EOT-20080305/

[IEC-RGB] International Electrotechnical Commission, "Colour Measurement and Management in

Multimedia Systems and Equipment - Part 2-1: Default RGB Colour Space - sRGB", May 1998,

http://webstore.iec.ch/webstore/webstore.nsf/artnum/025408

[JFIF] Hamilton, E., "JPEG File Interchange Format, Version 1.02", September 1992,

http://www.w3.org/Graphics/JPEG/jfif.txt

[MC-LOGFONT] Microsoft Corporation, "Windows GDI LOGFONT", http://msdn.microsoft.com/en-

us/library/dd145037.aspx

[MS-CFB] Microsoft Corporation, "Compound File Binary File Format".

[MS-DTYP] Microsoft Corporation, "Windows Data Types".

[MS-EMF] Microsoft Corporation, "Enhanced Metafile Format".

[MS-LCID] Microsoft Corporation, "Windows Language Code Identifier (LCID) Reference".

[MS-ODRAW] Microsoft Corporation, "Office Drawing Binary File Format".

[MS-OFFCRYPTO] Microsoft Corporation, "Office Document Cryptography Structure".

[MS-OFORMS] Microsoft Corporation, "Office Forms Binary File Formats".

[MS-OLEPS] Microsoft Corporation, "Object Linking and Embedding (OLE) Property Set Data

Structures".

[MS-OSHARED] Microsoft Corporation, "Office Common Data Types and Objects Structures".

[MS-OVBA] Microsoft Corporation, "Office VBA File Format Structure".

[MS-WMF] Microsoft Corporation, "Windows Metafile Format".

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探索PowerPoint .ppt文件二进制格式：2003版本详解

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