# Pragma pack Learning

    Recently, I debugged the network server program and wrote a small client program to test the program. I found that the service program was unwrapped incorrectly. After debugging, it is found that the client's protocol header size and the

Poj 2481 Cows (deformation + discretization of stars)

Cows Time Limit: 3000 MS Memory Limit: 65536 K Total Submissions: 6854 Accepted: 2211 Description Farmer John's cows have discovered that the clover growing along the ridge of the hill (which we can think of as a one-dimen1_number line) in his field

Message ing implementation

  WindowsMessageOverview WindowsApplication inputWindowsThe window in which the system sends messages to the application. These windows receive and process messages through the window process, and then return the controlWindows. Message

Use WinInet to develop Internet programs

    The WinInet Development Kit provided by M $ is part of ActiveX technology. Later, MS packages WinInet APIs and provides corresponding MFC classes. The function of the WinNet development kit is to provide support for the http ftp Gopher protocol,

Inter-process communication

  InWin32 provides the following methods for inter-process communication: ClipboardClipboard: Commonly Used in the 16-bit era, which is supported by the CWnd class. COM/DCOM: exchange data between processes through the proxy stubs of the

Display of transparent bitmap

  There are many ways to draw a bitmap that contains transparent colors. The simplest method is to call a ready-made function:TransparentBlt can also implement functions similar to TransparentBlt through its own code. The implementation process also

Display JPG/GIF images in the MFC Program

  If you useVBProgrammers must displayJPGOrGIFImages are as easy as they are, dragging the image controlFormIn minutes. HoweverC ++If programmers want to display the same image but it is not that easy, do they need to write it by themselves?JPGHow

Multi-thread DAO Processing

    There are many limitations in DAO multi-threaded processing, So I designed such a class to use DAO's forced calling through GUI threads. A gui message queue is used in the class. All calls to CMultiDAORecordset are forced to use AfxGetThread (

Difference between exit () subprogram termination function and return () function

In the main function, we usually use return (0); to return a value.However, this is the form of void main () in non-void cases.Exit () is usually used in subprograms to terminate the program. after use, the program automatically ends and jumps to

MCI (media control interface) Knowledge

Media Control Interface (MCI) Media Control Interface is a set of standard interfaces for multimedia devices and files provided by MircroSoft, its advantage is that it can easily control the vast majority of multimedia devices, including audio,

Windows Sockets: Background

This article describes the nature and usage of Windows Sockets. Other content includes: Define the term "socket ". The data type of the SOCKET handle. Describes the purpose of a socket. The Windows Sockets Specification defines a

How to extract all links from a webpage

Have you ever seen the "Download all links from Internet Express" feature of "Internet Express? To implement it, we can do this:IE has several useful interfaces that we can use to extract all links on the web page. I. Basic Principles First, use get_

Implementation Code of daffodils in C:

# Include int main (void) {int a, B, c; for (a = 1; a } # Include Using namespace std; Int main () {Int a, q, w, e; For (a = 100; a {Q = a/100; W = (a-q * 100)/10; E = (a-q * 100-w * 10 ); If (a = q * q + w * w + e * e) Cout

How to customize functions in C Language

1. IntroductionA function is a Black Box defined based on the incoming information (input) and generated items (output results.Dot.gif (114 bytes) We use parameters to transfer the value to the function:Dot.gif (114 bytes) We use RETURN to call the

Detailed steps for creating a C Shared Library

1) Basic ConceptsThe shared library is also. o file set, but these files are generated by the compiler in a special way (in Linux, the shared library file is in the "ELF" format, and the shared library already has executable conditions ). The code

Benefits of using a dynamic array structure

Author: Zhu Jincan Note that the dynamic array I mentioned here is not the new array, but the std: vector and CArray containers in STL. In the beginning, we thought that Using std: vector is nothing more than saving the effort of dynamic memory.

Mine game (pure C implementation) (2)

: returns the number of surrounding mines.Function prototype: int round_num_mines (int I, int j ); For the original function, see: html "> http://www.bkjia.com/kf/201104/87210.html OptimizedAlgorithm function interface:1Returns the number of

Open the console in the mfc Program

Author blog: http://87year.info The majority of c/c ++ learning is started from the console, and it is very convenient to directly output log information in the console. Today, I have Baidu a variety of methods for outputting logs to the console in

Layer-by-layer analysis and gradual implementation of the Red-black Tree Algorithm

This article mainly references: Introduction to algorithm Version 2The main code of this article: see Introduction to algorithms.Source of the image in this article: the original book of artificial painting and introduction to algorithms.Recommended

Simple Chat Room program implemented by gnu c in Linux

In my spare time, I wrote a simple multi-person chat program using multi-thread and network knowledge in linux, it is intended to explain the steps for writing network programs with gnu c, the issues needing attention, and the usage of linux

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