DOWNLOAD PDF TEACH YOURSELF MFC LIBRARY PROGRAMMING IN 21 DAYS

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1 Chapter 1 : nerdvana - Wiktionary This book is a good start on basic MFC programming. Recommended if you are just starting out with MFC. Found myself wanting more in depth discussion of some of the MFC concepts such as MDI. Windows MFC Programming I begins with the very fundamentals and, in a step by step, gradient manner, develops most all of the basic Windows programming techniques. There are often many different ways to accomplish the same task. So as you move from example to example, expect to see alternative approaches illustrated. Windows MFC Programming I is not a reference manual; rather, expect to see the "whys" and "how comes" that lie behind many of the approaches and techniques. It is my opinion that if you have a feel for what is really going on, you can do a better job of programming and debugging. Through the next series of chapters, the GUI is introduced a step at a time, such as timers, colors, resource files, menu operations, icons, cursors, dialog operations, the use of global memory, the new file handling functions, image processing, for example. Tool bars and the status bar are presented next followed by the multiple document interface and clipboard operations. Sound and animation effects continue to explore the possibilities of this rich platform. The final chapter discusses the document-view architecture which many professional applications utilize. This is an extensive topic and is one of the longest chapters in the book. Each is introduced at that point where you can best utilize it to your advantage and know what you are actually doing with it. While some of the early ones are fairly simple, the latter ones represent fairly complete applications. The benefit of these extended samples is great; you gain an understanding of how the various messages all operate together. All of these sample programs accompany the book. There are a number of very important application design issues that are written this way. They highlight some of the potential traps and pitfalls that lie in waiting. Perhaps the biggest barrier to learning Windows programming is the enormous number of identifiers, key values, the API Application Programming Interface and the MFC Microsoft Foundation Classes class member functions and variable names. For a beginner and more advanced reader, this proliferation of must-know names and identifiers is nothing short of bewildering. One of the key features of this book is that you will always have a greater certainty about what names must be coded as-is and what you have control over. Typeface conventions are designed to aid you in knowing at a glance what names are yours and what are not. Even though you may use any convention desired in your coding, when you refer to this book, the guess work or hunting has been eliminated. While I hope that the index at the end allows you to rapidly find key items, as a programmer, I know the value of being able to find a key identifier or function in the actual samples themselves. The all-in-one large pdf file is fully searchable. Page 1

2 Chapter 2 : Teach Yourself Visual C++ 6 in 21 Days by Davis Chapman Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study. The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied. Exercises Although considered legacy, the APIs that you will learn about today provide some valuable insight into the structured nature of developing database applications. Merriam Webster defines legacy as "being from the past," but you can hardly limit the content of this chapter to dusty old relics that need only cursory explanation. With this in mind, it is easy to see the importance of understanding these legacy interfaces. Who knows, you might have to provide support for an application using these APIs. Many different databases are available to the developer, and each has a specific set of programming APIs. SQL was an attempt to standardize the database programming interface. However, each database implementation of SQL varies slightly. It is up to the database vendor to support all or part, as well as additional elements of the specification. ODBC was the first cohesive attempt to provide an application layer that would allow access to many different databases. Applications can make function calls to the ODBC driver to send data to and receive data from a database, or in some cases multiple databases. ODBC provides standardized access to databases. This enables the application developer to better concentrate on the application and its user interface and not have to worry about database specifics for every possible database on the market. Because there are many different flavors of SQL, ODBC provides a single flavor that would be translated into a flavor that the database could read. What does this mean? There are three levels of compliance: Core Level-All drivers must support this level. Must be able to support connections, SQL statement preparation and execution, data set management, and transaction management. Level 2-Must support all the previous levels, plus the capability to list and search the datasource connections, and advanced query mechanisms and have support for scrollable cursors, among other things. A data source is simply the connection definition to a specific database. The connection definition contains information about the type of database, as well as the pertinent location information for the database. The ODBC Driver Manager and drivers use the name as an index into the data source table to find the database-specific information. The primary functions of the Driver Manager are to load and unload database drivers and pass function calls to the driver. You might be thinking that this is a little bit of overkill. Why not just call the driver directly? Your application would be responsible for every possible driver configuration available, including the data source definitions. It also performs some basic error checking, function call ordering, checking for null pointers, and validating of function arguments and parameters. There is good reason for this. This is done primarily to add some level of consistency and standardization. When the Driver Manager loads a driver, it stores the address of each function call in the driver and then tells the driver to connect to the data source. The application specifies which data source to connect to, using the data source name. The Driver Manager in turn hands this to the connected driver, which disconnects from the data source. The Driver Manager will unload the driver from memory only when the application frees the connection. The driver is kept in memory in case the application developer decides he needs further access. To adequately discuss every aspect of developing ODBC drivers would require another book. However, a cursory discussion is warranted. An ODBC driver must perform the following: Connecting to and disconnecting from the data source. Error checking not performed by the Driver Manager. A driver can be defined as one of two types. A file-based driver accesses the physical data directly. This wrapper is referred to as an engine. The database engine for Microsoft Access is the Jet engine. First you have to know where the data is data source definition. Then you have to connect to it. After you are connected, you need to ask the data source for information. After the information is in hand, you process it and in most cases hand it back to the data source for safe keeping. When you are finished, you disconnect from the data source. Connect to a Data Source First you have to acquire an environment handle. At this point you might be asking what an Page 2

3 environment handle is. A handle is nothing more than a pointer to a special structure. The environment mentioned here is generally considered the system and data source information that the Driver Manager needs to store for the driver. You might also be asking why the Driver Manager does this, not the driver. Some applications might need to connect to multiple databases. If the Driver Manager did not exist, the application would have to keep track of all the environment handles. In some cases, it is important to determine the ODBC version that the driver supports and to know the differences. However, a statement also carries attributes with it that define it in the context of the connection to the data source. This includes, but is certainly not limited to, the resultsets that the statement creates. Some statements require specific parameters in order to execute. These parameters are also considered attributes of the statement. Therefore, each statement has a handle that points to a structure that defines all the attributes of the statement. This handle also assists the driver in keeping track of the statements, because a multitude of statements can be associated with a connection. Statement handles are defined and allocated similarly to the environment handle. Remember that the Driver Manager allocates the handle structure and hands this off to the driver whenever the connection to the driver is made. However, it is important to bear in mind that when you are preparing a SQL statement, this binding must take place. There are two primary ways to prepare and execute the statements. For many application requirements, this is okay. Some applications, however, might need to execute the same statement several times. Get the Results After the SQL statement has been executed, the application must be prepared to receive the data. The first part of this takes place when the application binds the results to the local variables. The application has to tell the Driver Manager that it is ready to receive the results. The application does this by calling SQLFetch. SQLFetch only returns one row of data. Because the data is returned in columns, the application has to bind those columns with the SQLBindCol call. Essentially, you have to do the following statements, in order, to receive the resultset: SQLDescribeCol-Gives you information about the data in the columns name, data type, precision, and so on. SQLDescribeCol tells the application what type of data is stored in each column. The application has to bind the data to variables in its address space in order to receive the data. The application repeats this sequence for any remaining statements. Committing the Transaction When all the statements have been executed and the data received, the application calls SQLEndTran to commit or roll back the transaction. This takes place if the commit mode is manual application-directed. If the commit mode is set to be automatic which is the default, the command will be committed whenever the SQL statement is executed. NOTE Think of a transaction as a single entity that contains any number of steps. If any step or part of the transaction fails, the entire transaction fails. A transaction can be either committed or rolled back. If any part fails, then the transaction is rolled back, which indicates that the original data is preserved. Changing the commit mode to manual will assist in preserving data integrity. Because Day 15 presents a more detailed example, this section shows only a portion of the program flow. This example will fetch the last name for all the records stored in the AddressBook database. SQLDriverConnect hdbc1, 0, SQLFetch hstmt1 ; SQLDisconnect hdbc1 ; SQLFreeConnect hdbc1 ; SQLFreeEnv henv1 ; Line 21 calls SQLAllocConnect, which tells the Driver Manager to allocate variables to manage a connection and to obtain a connection handle. You might have noticed that the section "Step One: This was presented in this fashion to make the point that some legacy applications might contain ODBC version 2. Notice the include declarations: Obviously, this listing is very simplistic and is presented here to assist you in understanding programmatic flow of the ODBC API and working with databases. As you can see from this simplistic listing, you must perform many steps just to obtain some data from a database. Page 3

4 Chapter 3 : Formats and Editions of Teach yourself MFC Library programming in 21 days [blog.quintoapp.c Find helpful customer reviews and review ratings for Teach Yourself Mfc Library Programming in 21 Days at blog.quintoapp.com Read honest and unbiased product reviews from our users. Close The Controls Palette will appear on the screen. I am getting errors on Day 10 - Day10Doc. The problem is solved by simply including the include "Line. Update 2 may not get it to work but Update 3 should. Day 3 - Page 63, I followed the steps in the book and when I try to rebuild, I am getting the following error message link: On page, listing 6. Also TrackPopupMenu the first param. Remove these lines, and it appears properly. I keep coming up with an error message. EXE executable in the final step of compiling. There are two likely causes for this. The first possible cause of this error is that you are out of disk space on your computer. The second possible cause of this is that there is already a. EXE file with the same name on your computer, and it is marked as "read-only. You can do this in the Windows Explorer by selecting the file, right clicking the mouse over the file, and opening the file properties from the context menu. In the properties for the file, you should see a check box indicating if the file is "read-only". EXE file is marked as "read-only", then you can uncheck this box and save the updated file properties. There is actually a third possible cause for this error, and that is if you are trying to compile the project directly from the CD. If you are trying to do this, you need to copy the entire project directory to your hard disk and try to compile it there. If you open the project from the CD, the compiler will try and create the. EXE file on the CD. Problem compiling listing 8. The text on page discusses creating a single event handler function for use with all of the radio buttons. The source code for this function is in listing 8. What you need to do is add a function to the clicked event on every radio button, changing the suggested function name to the OnRSelection function name. This will point all of the radio buttons to this one function to call when any of them are selected. Page 4

5 Chapter 4 : Teach yourself game-programming in 21 days ( edition) Open Library Teach Yourself in21days 6 Understanding Object-Oriented Programming x Sams Teach Yourself C++ in 21 Days, Fifth Edition. What are the ACID properties of a transaction? The ACID properties of a transaction are atomicity, consistency, isolation, and durability. What is the isolation level of a transaction? Does a view on a large table occupy much room in the database? Why or why not? The code to sort the resultset in order to total sales, the highest first, would look like this: The code to return the average product price, from the highest to the least, would look like this: Your app cannot send messages window messages or otherwise to the DLL and have the DLL act independent of your application. An abstract base class must have at least one pure virtual function as a member. What is a class factory? A class factory is a class that knows how to create instances of a class that is a COM server. The class factory exposes a function named CreateInstance, which the OS can call to get pointers to instances of the COM servers whose code resides in that file. The Release function decrements the usage count for that COM object the server. When the usage count reaches zero, the server object is deleted or is told to delete itself. If no clients are using a server object, it can and should be deleted to free its resources. Exercises Add another method to the IDbComponent interface. Make this method take, as a parameter, an address to a variable of some sort. Modify this variable in the server code and make sure it gets back okay to the client. The important thing for a parameter that is passed in to the server to be modified and returned is that it be marked as [out] in the Parameters edit box in the Add Method to Interface dialog. You should find that the out-of-proc server is much slower-has much more function call overhead-than the inproc server. Where does the ADO type library reside and how can you view it? DLL and is typically installed in the C: Why does ADO throw exceptions when errors occur? ADO throws exceptions when errors occur because that is how the high-level ADO functions produced by import are implemented. Modify the code in Listing The code for the Execute call should look like this: Each tier that provides an effective level of abstraction has interfaces that are understandable and distinct. Distinct interfaces between the tiers enable the tiers to be updated independently of each other. Thin client programs are often more desirable than fat clients, because they do not require updates as often as fat client programs. HTML specifies how information will be displayed. XML specifies what the data is and what it means. This can provide access to the database to anyone on the Web who knows a valid data source, username, and password for that database. Quiz DCOM alone is insufficient for building multitier applications because DCOM by itself provides no support for transactions, thread pooling, or database connection pooling. This enables process isolation, as well as common security settings for the collection of components that reside in the package. A disconnected Recordset is an ADO Recordset that contains data but currently has no a connection to a database. Disconnected Recordsets can be sent between COM servers and clients as a flexible and powerful data structure. Exercises The linker will produce an error because it cannot open the DLL file for writing. This is because the DLL is loaded. Sometimes even this does not work. At those times, you need to shut down the server processes using the Transaction Server Explorer by right-clicking My Computer and selecting Shutdown Server Process. Component1 and press the Delete key to remove the component from MTS. You might need to mark it safe for scripting and initialization again. Its sole purpose is to manipulate data in two-dimensional tables inside relational databases. A relational database supports only the data types that it defines. When you are designing an application that will use object and relational technology, it is generally best to start by designing the relational database schema. You can then use the schema as the basis for the object schema. The benefits of a live object cache include greatly improved application performance because of reduced database access, and reduced network traffic, again because of reduced database access. ShoeID Quiz CDatabase The environment handle saves information necessary for the application to connect to a data source. The Driver Manager will construct the handle and then give the connected driver a copy. To view the type information, double-click one of the classes to Page 5

6 instantiate the object, double-click one of the non-iunknown interfaces, and click the View Type Info button. The document class contains the recordset. Yes, the fields are updated whenever the cursor is moved. Identical to answer 1. The code should look something like this: A data provider and a data consumer. A data provider is an application that responds to queries and returns data in a usable form. A data consumer is an application or component that uses an OLE DB interface to access a data source. What is an interface? How does the COM architecture use an interface? Interfaces describe the functionality provided by the component and also provide the structured mechanism that these components use to talk with each other. A COM component is an object that uses the rules in the COM specification to provide access to the interfaces provided by a component. What is interface factoring? Interface factoring is the capability of COM objects to support multiple interfaces, which can provide different levels of functionality, depending on the consumer. A consumer uses the interface appropriate to its needs. What method is used to determine whether a COM object supports a particular interface? When an application determines whether a component supports a specific interface, it is guaranteed the functionality of that interface. Then the application uses the Session object to create a Command object. Next, the application navigates through the Rowset containing the data. Finally, the application releases the objects. What is an Enumerator object, and how is it used? What interfaces are supported by an Enumerator object? The Enumerator object supports the following interfaces: What is a DataSource object, and how is it created? The DataSource object abstracts the actual data source. What interfaces does a DataSource object support? The DataSource object supports the following interfaces: You must call these functions at the start and end of any application that uses COM. Several places in the online documentation deal with COM. When you find a useful article or document, press the Locate button to find that article in the table of contents. Often you will find other useful information in the neighboring documents. The applications developed yesterday and today do not really consider error handling. How would you integrate error handling into the application in Listing Quiz The Session object provides a context for transactions and commands. The CreateSession method of this interface actually creates a session. You can use the Session object to create a Command object, to access a row set directly, and to create or modify data source tables and indexes. Schema information describes the data contained in the data source. The Command object performs commands that the provider supports. The ICommandText interface sets and retrieves the actual command text, which specifies the data source command to execute. The Command object requires the ICommandText interface. In SQL, parameters in commands are usually specified with the? The actual parameter value replaces the?. Parameterized statements are similar to procedures in any programming language; they are useful for executing a particular statement repeatedly. A parameterized statement can execute a command whose parameters are specified while an application is running. The ICommandPrepare interface converts a command to a prepared command. A prepared command is a command that has been precompiled so that it can execute faster. If you expect a command to be executed repeatedly, transforming it into a prepared command can improve application performance. Quiz List the major property groups. What structure returns the collection of property values? What method opens a transaction? Chapter 5 : visual c mfc programming by example Download ebook pdf, epub, tuebl, mobi Hi. I've been doing a course named: "Teach yourself visual c++6 in 21 days". The problem is I'm using VC++, and I'm getting a lot of build errors. Chapter 6 : Learning Visual C++ in "21days", Robert Sam, Teach Yourself MFC Library Programming in 21 Days, Sams (), â ISBN, page Just as Visual Basic brought closet Windows programmers out into the open, so might Delphi allow these same programmers to take an even bigger step toward ' nerdvana'. Page 6

7 Chapter 7 : Teach yourself C programming in 21days Open Library 2 Sams Teach Yourself Visual C++ 6 in 21 Days By the time you begin the second week, you'll be doing more and more programming, as the topics become more involved. Chapter 8 : mfc programming Download ebook PDF/EPUB The Microsoft Foundation Classes (MFC) are designed to make life simple for developers. They enable developers to create Windows-based applications without having to know the underlying Windows architecture. Chapter 9 : Teach Yourself blog.quintoapp.com In 21 Days - CodeProject Open Library is an initiative of the Internet Archive, a (c)(3) non-profit, building a digital library of Internet sites and other cultural artifacts in digital form. Page 7