Symbol设备开发者指南：全面入门与A系列72E-71161-01 Revision A

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"Symbol Developer Guide" 是一份全面的开发指南，专为Symbol公司的设备设计，如72E-71161-01型号，适用于Rev A版本，发布于2006年5月。这份文档由Symbol Technologies, Inc. 出品，所有版权归该公司所有，未经书面许可，用户不得以任何形式复制或使用其内容，包括但不限于电子或机械复制、录音、信息存储与检索系统。手册中的技术资料可能会根据需要进行不通知的更新。该指南的核心内容是针对Symbol设备的软件开发，特别是强调了软件以"as is"基础提供，即用户在接收时获得的是一个非转让和非独家的许可，允许他们使用提供的软件或固件程序（即“licensed program”）。然而，用户必须获得Symbol的书面同意才能进行程序的分配、授权或转让，除非法律另有规定。此外，用户不得对licensed program进行修改、合并或将其与其它程序材料整合，除非按照版权法的允许范围进行操作。指南详尽阐述了开发流程、接口规范、API使用方法、错误处理、调试技巧以及可能遇到的最佳实践和注意事项。它旨在帮助开发者高效地与Symbol硬件设备集成，并确保软件的兼容性和稳定性。为了充分利用这份文档，开发者需要遵循其中的安全策略、性能优化建议和版本管理规则，以确保最终产品的质量和符合Symbol的商业要求。 “Symbol Developer Guide”是一份不可或缺的工具，对于希望在Symbol硬件上进行软件开发的专业人士来说，理解和遵循其中的指导原则至关重要，以避免潜在的法律风险并最大化利用Symbol技术的优势。

Developer Guide for Symbol Technologies Devicesx

Notational Conventions

The following conventions are used in this document:

• “device” refers to any Symbol terminal.

• “User” refers to anyone using an application on the terminal.

• “You” refers to the End User, System Administrator or Technical Support person using this manual as a reference to install,

configure, operate, maintain and troubleshoot the terminal.

• Italics are used to highlight the following:

• chapters and sections in this and related documents

• dialog box, window and screen names

• drop-down list and list box names

• check box and radio button names

• icons on a screen.

• Bold text is used to highlight the following:

• key names on a keypad

• button names on a screen.

• Bullets (•) indicate:

• action items

• lists of alternatives

• lists of required steps that are not necessarily sequential.

• Sequential lists (e.g., those that describe step-by-step procedures) appear as numbered lists.

Related Documents and Software

The following documents and software provide more information about Symbol devices.

• Microsoft

Applications for Symbol Devices - User Guide, p/n 72-68197-xx

• Symbol Applications for Symbol Devices, p/n 72-68901-xx

• SMDK Help File, p/n 72E-38880-xx

• Symbol Mobility Developer Kit for C (SMDK for C)

• Symbol Pocket Browser

• Symbol Mobility Developer Kit for Java (SMDK for Java)

• Symbol Mobility Developer Kit for .NET (SMDK for .NET)

• Device Configuration Packages (DCPs)

•ActiveSync

software, available at: http://www.microsoft.com.

For the latest versions of SMDKs and DCPs, go to: http://devzone.symbol.com.

For the latest version of this guide and all guides, go to: http://www.symbol.com/manuals.

Introduction 1-3

A History of Innovation

Symbol Technologies was founded in 1975 and the first Symbolmaker generator film masters were produced. In 1980, the first hand-

held laser bar code scanner was introduced. By 1990, Spectrum One

became the first commercially available, transaction-oriented

spread spectrum wireless LAN network. 1995 brought the introduction of Spectrum24

, the high-performance 2.4 GHz wireless

network designed to comply with the IEEE 802.11 international standard for airwaves communications.

In 2004, continuing to find more efficient ways of working and engineering information technology into new ways of thinking, Symbol

introduced RFID technology integrated with a mobile solution to expand and improve the general functionality and performance of

the entire mobile application. Also in 2004, Symbol introduced the first in a new family of durable enterprise digital assistant (EDA)

products specifically designed for business essential applications within the enterprise environment. Targeting the growing mobile

enterprise market, the new Symbol device was created for mobile workers within organizations that are seeking to capture, move

and manage information at the point of business activity in order to increase productivity and efficiency, while improving customer

responsiveness and satisfaction.

As technology advances, Symbol continues to invest in strategies for growth and profitability, including technology development to

assure our future leadership in products and systems, expansion of our distribution network, and measures to improve our operational

effectiveness.

Enterprise Mobility

Today, when people, assets and information are in constant motion, companies across all industries are beginning to understand the

competitive advantages that enterprise mobility solutions can deliver.

Having access to the right information at the right moment makes all the difference to a retailer monitoring inventory, a delivery

person tracking a package or a doctor following a patient's progress. Without the latest data, progress can stall, delays can occur and

costly mistakes can be made.

Symbol's enterprise mobility solutions continuously deliver real time answers to real world business problems, empowering people

to make informed decisions that move business forward.

Symbol's enterprise mobility solutions enable some of the world’s leading companies and ultimately:

• Enhance the retail experience by giving customers on-demand access to product and store information as they shop, and

giving sales associates access to real-time customer and inventory data at the point of service.

• Boost worker productivity by linking managers and associates in the field, on the retail floor, in the warehouse and on the

loading dock.

• Improve the ability of healthcare providers to make more informed decisions, by giving them access to medical charts, vitals

and lab reports from patient's bedside.

• Reduce inventory shrinkage and out-of-date products by providing the most current information about customer buying

patterns.

• Manage and control the entire enterprise mobility solution including security, upgrades, maintenance and performance from

an easy-to-use, anytime, anywhere Web-based interface.

Developer Guide for Symbol Technologies Devices1-4

DOS to CE

Despite advances in operating system technologies and the increasing adoption of wireless technologies throughout the global

business environment, many enterprises using mobile technology have continued to make investments in DOS-based applications.

Although this approach has worked successfully for many, continuing to develop to legacy technologies prevents DOS-based

enterprises from evolving into agile businesses capable of capturing, moving and managing data efficiently.

Unlike contemporary operating systems, DOS was designed to perform a single task at a time. A program was loaded from storage

to memory, executed to perform a task, and then exited. The total memory supported was limited to 640KB. The user interface was

character-based; mass storage was limited; and mobile technology was not yet available. Since multimedia was in its infancy, no one

imagined that Web browsing, video display or audio output would be possible, let alone widespread, on devices.

With the advent of the Microsoft Windows CE operating system, the world of mobile computing changed for the better. Graphical

user interfaces (GUIs) made applications easier to use. Increased memory and storage space in Windows devices led to more

functionality being available on devices, which in turn resulted in increases in end-user productivity. Windows CE provided the ability

to add new technologies to devices without having to rewrite applications. In a nutshell, Windows CE provides a more advanced

toolset and a larger development community. This is why Symbol chose Microsoft Windows CE as a development platform, and

Symbol Mobility Developer Kit as the tool to write applications for that platform.

SDK to SMDK

Prior to the introduction of the SMDK, each Symbol device required a dedicated C Language SDK to write applications for that device.

Using the device specific SDK approach, by the end of 2004, more than 100 SDKs would have been supported out in the field.

In addition to managing a large number of device specific SDKs, problems arose due to potential SDK conflicts across devices, no

central ownership, a different look and feel for each SDK, and requirements for supporting additional languages such as Java, C# and

VB.NET.

To enhance the customer experience, the Symbol software team developed a "common" SDK model for Pocket PC 2003, Windows CE

4.2, Mobile 5.0 and Windows CE 5.0 devices. The new SDK model takes the traditional device-specific C Language SDK and splits it

into two separate products:

• a "common” SDK, called the SMDK for C, used for developing applications

• a number of DCPs, one for each type of device, used for deploying software.

Microsoft Windows Mobile 5.0 devices do not have DCPs.

The SMDK for eVC4 contains all of the files necessary for creating applications for Symbol devices. It includes an API reference guide,

a set of sample applications and the Symbol library files.

The DCP contains all of the files necessary for customizing the Platform and Application partitions of a device. It includes a utility

program that allows users to customize and load HEX images and documentation describing how to use and configure the device and

its accessories. Some DCP releases include a utility program that allows users to create REG files for setting device options.

Due to the high demand for additional programming models, Symbol now produces SMDK products for C/C++, Java, .NET and the

Web.

This new SDK model provides a set of tools that are more flexible, allowing customers who simply want to load devices to do so

without having to install third party developer tools and a full SDK. It also allows customers to create applications for a wide variety

of Symbol devices using a single developer kit.

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