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Pocket PC, Handheld PC Developer's Guide with Microsoft Embedded Visual Basic

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Pocket PC, Handheld PC Developer's Guide with Microsoft Embedded Visual Basic


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  • Copyright 2002
  • Dimensions: K
  • Pages: 432
  • Edition: 1st
  • Book
  • ISBN-10: 0-13-065077-3
  • ISBN-13: 978-0-13-065077-1

Mobile solutions—in your pocket!

  • The complete guide for developing wireless applications using Microsoft(r) eMbedded Visual Basic(r)
  • Enterprise solutions, including XML, SQL, SOAP, and .NET

The Pocket PC offers more wireless capabilities than any other handheld mobile device. Now you can use the power of Microsoft eMbedded Visual Basic to develop applications that allow you to manage connections to corporate networks, access data from any Web site, synchronize information with corporate databases, and call SOAP and .NET web services, all on your Pocket PC. This is the one book that provides comprehensive coverage of all these applications and more.

Developers at all levels can learn to take advantage of the Microsoft SDKs to interact with existing database and Internet applications, using such technologies as:

  • User interfaces for Pocket PC and Handheld PC 2000
  • SQL Server for Microsoft Windows(r) CE
  • XML and DOM
  • SOAP and .NET
  • HTTP and ASP

No other book provides more complete coverage in a single volume. Jump right into wireless mobile computing with the Pocket PC, Handheld PC Developer's Guide.

Sample Content

Table of Contents



1. Introduction to eVB Development.

You, the Reader. What You Will Need. Pocket PC, Handheld PC 2000, and Other Devices. Pocket PC. Handheld PC 2000. Other Devices. Overview of eMbedded Visual Basic (eVB). Compared to Visual Basic 6.0. Using eMbedded Visual C++ (eVC). Emulation. Development Tools Installation. Creating a “Hello World” Application. Network Connections. Configuring HPC 2000 Network Support. Configuring Pocket PC Network Support. Platform Manager. Remote Tools. ActiveX Controls and the Windows CE Control Manager. Project Settings and Properties. Error Handling. eVB Data Types. Debugging. Conclusion.

2. Creating a User Interface.

The Pocket PC Interface. Managing Pocket PC MenuBars. Responding to Menu Selections. Using the New Button. Changing a Menu Item at Run Time. Accessing Menu Items at Run Time. Inserting and Deleting Menu Items. Adding MenuBar Buttons. Pocket PC Dialog Boxes. The HPC 2000 Interface. Designing Application Windows. Creating a Pocket PC Application Window. Creating an HPC 2000 Application Window. Conclusion.


Microsoft SQL Server for CE Features. The ADOCE 3.1 Architecture. Microsoft SQL Server for CE Installation. Installing ADOCE and ADOXCE on the Device. Copying SSCE Files. Installing ISQLW for Windows CE. Simple Database Operations. Creating a Database (Catalog). Opening and Closing Databases. Creating a Table. Adding Records. Listing Records. Using ISQLW_CE. Tables and Columns. Integer Data Types. Numeric, Float, Real, and Money Data Types. Binary, VarBinary, and Image Data Types. UniqueIdentifer Data Type and ROWGUIDCOL. The Identity Property. Null ability and Uniqueness. Referential Integrity and Primary and Foreign Keys. Default Values. Using DROP TABLE. Using ADOXCE With Tables. Indexes. Manipulating Data. Creating and Opening Databases. Error Handling. ADOCE Record sets and the SELECT Statement. INSERT, DELETE, and UPDATE Statements. Managing Transactions. Encryption and Password Protection. Compacting a Database. Creating a Database For Distribution. Conclusion.

4. SQL Server CE Remote Data Access and Replication.

Remote Data Access. RDA Installation and Configuration. Programming RDA. SQL Server CE Relay. Security. SQL Server Replication. Installation and Configuration. Programming Replication. Dealing with Conflicts. Conclusion.

5. HTTP and Internet Programming.

Using the WinSock Control. Sending Data with an HTTP GET. Sending Data with an HTTP POST. The HTTP Component. Making a Simple Request. Posting Data. Using NT Authentication. Using a Proxy Server. Conclusion.

6. XML and DOM.

XML. Document Object Model (DOM). Microsoft SQL Server 2000 and XML. Configuring XML Support. Creating a Template. Accessing a Template from evb. Parameterized Templates. Displaying XML Documents in a TreeView Control. Handling SQL Errors. Adding Data with Templates. Annotated Schemas and Xpath. ADO Recordsets and XML. Creating and Managing XML Documents with DOM. Creating XML Documents with Elements. Creating XML Documents with Attributes. Sending an XML Document to an ASP Page. Conclusion.

7. SOAP and .NET Web Services.

The Simple Object Access Protocol (SOAP). Installing SOAP 2.0 Toolkit. SOAP XML Document Structures. Making SOAP Calls from Pocket PC and HPC 2000 Applications. Using .NET Web Services. Creating a .NET Web Service with VB.NET. Calling Web Services with HTTP GET and POST. Calling Web Services with SOAP. Using Class Objects in .NET Web Service. Using ADO.NET DataSets. Conclusion.

8. Managing Connections with RAS.

Creating RAS Phone Book Entries. Listing RAS Phone Book Entries. Determining If a Connection Exists. Making an RAS Connection. Disconnecting an RAS Connection. Conclusion.

9. Pocket Outlook Object Model (POOM).

Overview of POOM Model. Logging on and POOM Version. Adding a Reference to PIMStore.DLL. Logon, Logoff, and Version Information. Folders and Items. Managing Contacts. Using OIDs. Finding and Restricting Items. Displaying Contacts. Managing Contacts. Managing Tasks. Managing Appointments. Conclusion.

10. The Object Store, File Input/Output, and the Registry.

The FileSystem Control. Folder Listing. File Listing. File Operations. The Object Store. Memory Status. Storage Cards. The Common Dialog Control. File Open Dialog on Pocket PC. File Open Dialog on HPC 2000. File Save As Dialog on Pocket PC. File Save As Dialog on HPC 2000. Reading and Writing Files. Text-Based Files. Unicode Files. Binary Files. Random Files. The Registry. Writing a Registry Key. Accessing a Registry Key. Conclusion.

11. Setup and Installation.

Using the “Application Install Wizard”. Installing the Application. Conclusion.

12. Architecting and Designing a Mobile Solution.

Connectivity Options. Local Storage Options. Data Transfer Options. Data Synchronization. Creating a Green Field Mobile Architecture. Integrating with Client Server Architectures. Integrating with n-Tier Architectures. Conclusion.

Appendix A: The CEUtils ActiveX Control.

The DatePicker Control. The ObjectStore Component. The Process Component. The RASConnection Component. The StrRegistry Component.

Appendix B: HTTP ActiveX Component.




More and more, developers are looking at incorporating mobile devices, such as Pocket PC and Handheld PC 2000 (HPC 2000) devices, into mainstream computing projects, as either stand-alone applications or applications that integrate into existing systems. Using the eMbedded Visual Basic development tool is the easiest way of creating such applications, particularly because it allows developers to draw on their desktop and server application development skills.

For this book, I have tried to select topics that will inform developers needing to provide access to data on the move. First I introduce eMbedded Visual Basic development (Chapter 1); then I explain how to develop user interfaces with eMbedded Visual Basic (Chapter 2). Next I show how to store data locally using SQL Server for Windows CE (Chapter 3). Using these techniques, you can quickly develop stand-alone applications that store data locally on a Pocket PC or HPC 2000 device.

The most significant challenge in developing mobile applications is to provide access to databases located on servers while users are out and about. SQL Server for Windows CE provides various techniques for exchanging data with database servers (Chapter 4). Remote Data Access (RDA) provides a simple "push" and "pull" facility that will work with all versions of Microsoft SQL Server and other database servers such as Oracle. The most sophisticated technique in SQL Server for Windows CE is merge replication, which works only with Microsoft SQL Server 2000. Using this technique, mobile users can access local data in an SQL Server for Windows CE database while not connected to the network, and then use merge replication to provide an automatic two-way update of data when a connection is made.

Many application architectures do not provide for direct database access from client applications; there is generally a "middle tier" consisting of business objects providing secure access to the database. In this case, web-development techniques such as ASP (Active Server Page) and HTTP (Hypertext Transfer Protocol) can be used to access business components and thus transfer data (Chapter 5). Your application can decide on the format used for transferring data or you can use XML (Extensible Markup Language) as a standard but more verbose data exchange format. XML documents can be parsed and represented as a Document Object Model (DOM) on Pocket PC and HPC 2000 applications (Chapter 6). ASP is designed predominantly for developing web pages that will be accessed through a web browser but can be adapted to allow applications to make requests. SOAP (Simple Object Access Protocol) uses HTTP to allow function-based calls to be made through web servers. Chapter 7 shows how to make SOAP calls from eMbedded Visual Basic.

ASP.NET, which can be programmed using Visual Studio.NET, takes SOAP and HTTP programming techniques and allows Web Services to be created (Chapter 7). Web Services are function-oriented interfaces that can be easily called from eMbedded Visual Basic applications. Rich data sets can be transferred using techniques described in this book, including accessing databases using ADO.NET and returning data as XML documents.

An important aspect of creating mobile applications is making and managing connections to a network. Chapter 8 shows how to make a connection using RAS (Remote Access Services) through, for example, a modem and a mobile phone. RAS functions are difficult to call directly from eMbedded Visual Basic, so an ActiveX component is provided with this book to make the RAS function calls. The source code for this ActiveX component is also included.

In addition to databases, there are other facilities for storing data. These include POOM (Pocket Outlook Object Model) for storing contact, calendar, and task information (Chapter 9) and the Object Store for files and registry data (Chapter 10). Finally, Chapter 11 describes how to create setup files and Chapter 12 discusses important architecture and design issues you should consider when creating an application.

While eMbedded Visual Basic provides a flexible and productive development environment, it does not provide complete access to all Pocket PC and HPC 2000 features. There may be times when you need to use C or C++ to access API functions. My previous book, Windows CE 3.0 Application Programming (by Nick Grattan and Marshall Brain, Prentice Hall PTR, 2001; ISBN 0-13-025592-0), describes how to call many of these API functions.

Please feel free to contact me by email at nick@softwarepaths.com if you have questions or suggestions, or visit my website, www.nickgrattan.net, where updates will be posted. I will try to answer your questions but cannot always promise to do so. I hope you enjoy developing mobile solutions with eMbedded Visual Basic.


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