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The detailed explanation of Declare_dynamic/implement_dynamic macro in the Book of "in-depth MFC" __MFC

Recently some friends in the "Simple and Simple MFC", by the third chapter of a few macros to get stuck, remember the first time I read this book, also by these several macros to get stuck. Of course, the real card is actually the first one, that is, declare_dynamic/implement_dynamic. I made a detailed explanation for the same stuck friend to make a reference: Description: The main purpose of these two macros is to add static member functions and st

About the new version of Ace 6.0.0 Supplement to ace_static_case macro usage in the APG book

The new ACE has canceled the use of Ace_static_case macros, using static_cast as a direct conversion. In response to this change, a change was made to the 47-page example in the APG book: #include "ace/streams.h" #include "ace/log_msg_callback.h" #include "ace/log_record.h" #include "ace/sstring.h" # Include "Ace/os_ns_time.h" #include "ace/time_value.h" class Callback:public Ace_log_msg_callback {public:void Log (Ace _log_record log_record) {cerr

SAS macro (3) macro, debug macro, create a macro with parameters, understand symbol table (global macro and local macro resolution), macro conditional operator, perform operation in macro

A macro resembles a function in C, executes after the specified parameter is passed in, and inside the macro can contain the data step program and the conditional operation symbol.A macro variable is just a small variable 、、、、 (by the same is a great role)1: Basic syntax for macrosHow do I create a simple macro and use

SAS macro (2), run in Create macro with macro, proc SQL create macro, SCL in macro processing (n/a)

Tags: style blog http io ar color OS using SP1: Macro definition in program runCall Routines -enable you-transfer information between an executing DATA step and the Macro Proces Sor.You can use the symput routine to create a macro variable, and to assign to, variable any value, is Availa ble in the DATA step.Symput routine to create a

Custom print macro, two pairs of parentheses, single parameter macro, specified parameter macro, variable parameter macros

v1--Single-parameter macros#define DRV_DEBUG 1#if DRV_DEBUG #define DRV_PRINT(x) printf(x)#else #define DRV_PRINT(x) #endifThis version of Drv_print (x) can only output a single variable--pure stringvoid foo(){ DRV_PRINT("Driver Initialize Success!");}Change the Drv_debug macro definition when you do not need to print debug information#define DRV_DEBUG 0Of course, you can define it directly.#define DRV_PRINT printfBut if the

C language macro definition and macro definition functions

parameters.Look at the following example:#define MALLOC (n, type) \((Type *) malloc ((n) * sizeof (type)))With this macro, we can assign a space to any type we specify and return a pointer to that space. We can look at the exact working process of this macro:int *ptr;ptr = MALLOC (5, int);Expand this macro to the following result:PTR = (int *) malloc ((5) * sizeof (int));This example is one of the classic

Macro compilation macro

I. macro assemblyMacro definition is implemented by a set of pseudo operations. The format is:Macro_name macro [dumny_parameter_list]... (Macro definition)EndmMacro and endm are a pair of pseudo operations. this is a macro definition between pseudo operations-a group of independent functional program code. the

The macro macro-syntax analysis and use examples of Rust 1.7.0

The concept of macro macros is found in many languages.In general, the mechanism of a macro is to replace or expanded a macro that has already been defined at the pre-compilation stage, that is, to replace the macro by its name with the contents of the macro.The macros in Rust are different!The macros in rust are also

WORD2003 Delete a single macro and delete a macro scheme

One, delete a single macro 1, on the Tools menu, point to Macro submenu, and then click Macros. 2. In the Macro name box, click the macro (macro: an action or a set of actions that you can use to automate tasks.) You can record macros in the Visual Basic for Applications p

Macro definitions without parameters and macro definitions with parameters

The macro definition is one of the three preprocessing features provided by C, and these three preprocessing include: macro definition, file inclusion, conditional compilation1macro Definition without parameters: Macro definition is also called macro substitution, macro subs

Use of Freemarker macro (macro)

Some people say that with freemarker, but there is no use of its macros (macro), it is not really used freemarker. Is that the macro is a major feature of Freemarker.The definition of a macro can be seen in the relevant document, which is clearly described in the following, a look at its usage./WEB-INF/TEMPLATE/COMMON/COMMON.FTL:Then define in Freemarker.properti

How to Write macro debug macro with Variable Parameter count

Compiler built-in macros: First, we will introduce several built-in macro definitions of the compiler. These macro definitions can not only help us write cross-platform source code, but also help us output useful debugging information flexibly. The ansi c standard has several predefined macros (which are also commonly used ): _ Line __: Insert the current source code line number into the source code; _ File

C/C ++ macro usage Summary

C/C ++ macro usage Summary Macro replacement is the Technical Feature of the C/C ++ series languages. The C/C ++ language provides powerful macro replacement functions. Before the Source Code enters the compiler, first, a module called "Preprocessor" is used to expand the macro Based on the Compilation parameters and a

C macro system defects, c macro Defects

C macro system defects, c macro DefectsI took a look at the boost preprocessor library a little over the past two days. I found that the boost madmen used various tricks to define various data types and structures, and also defined various operations such as addition, subtraction, multiplication, division, and so on, in the process of quick browsing, we also caught a variety of well-known

Access uses the macro control Program 4. Common Macro Operations _access

Macros are very rich, and if you just do a small database, the process of the program can be fully implemented with macros, without using Visual Basic. Some operations have no parameters (such as Beep), while others must specify parameters (such as OpenForm). In general, it is a good practice to set the parameters of an operation in the order of the parameters, because selecting a parameter determines the selection of the parameters that follow the parameter. Common

Access macro control program-1. 6. Description of macro usage

6. Description of using macros The description of macro operations is not mandatory, but it makes macros easier to understand and maintain. SQL expressions cannot be used in the macro "condition" column. Generally, a macro is executed for testing only. You can append a macro to a form, report, or control to respond

Summary of C + + macro (macro) usage

When we talk about macros in C + +, the first thing we think about is "#define", and its basic syntax looks like this:1 #define macroname (para1, Para2, Para3, ..., Paran) macro-bodyThe declaration of a macro is similar to a normal function declaration, but there is an essential difference between the two: C + + functions execute code Snippets at runtime (runtime), while macros execute code snippets at the

GDB Debug macro definition and display macro-defined values

Macro Definition #define APLLCON0 * (volatile unsigned int *) 0xff500100), value is virtual address question : GDB tracing Debug When you want to view the value of this macro, you are prompted as follows: No symbol "APLLCON0" in the current context. Analysis : Reference The compiler does not compile the macro

[Debut] 'k4 'macro virus excludes the original New Excel macro virus exclusive Tool

Recently, a large number of Excel files in the company have discovered an office macro virus. They cannot be killed when using Kingsoft 360. Downloading Kingsoft version's macro virus excludes only part of the virus, another type of macro virus cannot be killed in any way. Attack symptoms Office macro virus exclusi

Access macro control program 4. common macro operations

Access macro control program 4. common macro operations Access macro control program 4. common macro operations Macro operations are very rich. If you just create a small database, the process of the program can be fully implemented using macros without using Visual Basi

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