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The use of VC + + can write their own software installation program. Here just create the installer type of MSI file, with Orca Open is the correct file format, worth recording, MSI database inside the various table relationship is complex, not won't be can study clearly. This article only makes one simple analysis, realizes writes a program to attach to the software program's behind, thus may have the installer MSI file directly after the compilation

VC Read XML Simple Example XML has recently been blown marvellous, a lot of data exchange, including a lot of middleware systems, WebService, software configuration files, are in the XML technology, is really a good thing, I preface, wrote a read the XML snippet, with some of MSXML's interface. I read the configuration file for the BT software, and the XML content is as follows: The code is as follows: #include "stdafx.h

Using VC to draw logarithmic coordinate system Objective: To draw the logarithmic coordinates with any frequency as the starting point and at any frequency as the end point, and to scale the coordinates arbitrarily. Implementation method: = = = "Update 2013-12-18": ========================================================= It's a stupid way to find out the way you used to be today. In fact, as long as you know the x coordinates of any two points and i

http://www.gissky.com/GIS/ShowArticle.asp?SID=12ID=1178 Combining GIS tool software with today's visual development language integration two times development method is the mainstream of GIS application development. Its advantage is that can make full use of the GIS tool software to the spatial database management, the analysis function, but also may use other visual development language to have the high efficiency, the convenience and so on programming merit, sets both the director ... MAPX is

Encryption and decryption EXE algorithmAES encryption and decryption algorithm may have been implemented by others, there are also some of the VC code on how to manipulate custom resources, I just put them in a combination, applied together, and used some small memory manipulation techniques, today will be done before the function summed up ... Search on the Internet, as if there are few related to this use, is the original bar, interested friends can

1. The exported function of VC + + DLL is defined as the export function of standard C: Copy Code code as follows: #ifdef Lrdlltest_exports #define LRDLLTEST_API __declspec (dllexport) #else #define LRDLLTEST_API __declspec (dllimport) #endif extern "C" Lrdlltest_api int Sum (int a, int b); extern "C" Lrdlltest_api void GetString (char* pchar); A + b LRDLLTEST_API int Sum (int a, int b) { return a + B; }

In programming, it is often necessary to use random numbers, of course, the program (function) itself can not generate so-called real random number, but also need a random seed, and then according to the established algorithm to calculate a definite result. If we only need a finite time or a random number of times to require a longer interval, we can also use the current time (timestamp) as a random number. Since time can be a random number, why do we need a special random function? This involve

, when you create a control by hand, you build a control object and then create a control window on the screen using the CREATE function, which means that the control's creation is done by the control object. The idea of a dynamic connection is different, and SubclassDlgItem can dynamically connect the controls that are already in the dialog box to a Window object that takes over the message processing of the control, giving the control a new feature. The declaration of the SubclassDlgItem funct

In VC mapping, the direct mapping to the screen of the CDC, because the surface of the time is stuck in different times caused the screen flicker. The solution to this problem is to first draw the picture onto the memory canvas, at once to the screen, memory mapped to the screen quickly, so it does not cause flicker. 　CDC　m_dcMem;　　　　　　　　　　　　　　//创建内存画布 　 CBitmap　m_bmpMemDC;　　　　　　　　　//创建内存画布的 //初始化内存画布 CDC* pDC = GetDC(); 　 if(pDC->GetSafeHdc()) 　 { 　

One, what is WebService? WebService is actually a web-based application that provides a certain calling interface to external programs. An external (remote) program that can be invoked via the Web. Second, the characteristics of WebService: 1. Because WebService is published via a Web server, it can go through the firewall more smoothly than DCOM. This is also one of the advantages of WebService, it can be said that WebService, for the development of distributed applications, provides a good

Environment: Windows 2003,VC 6.0 Absrtact: Start with a COM service program, then transform an MFC project into a service program, and finally let this program display a graphical interface at startup. Keyword: Windows service program COM Service starts NT service and desktop interaction before booting One, what is the Windows service program? You can see it using the following methods. Open the Control Panel, then the Management tool, which has

: http://www.bianceng.cnhttp://www.bianceng.cn/Programming/vc///If the folder's shortcuts start and target locations Can be set to the same psl->setworkingdirectory (Strsourcepath); Sets the starting position of the shortcut ipersistfile* PPF; if (succeeded Psl->queryinterface (Iid_ipersistfile, (lpvoid*) AMP;PPF)) {//wcha R Wsz[max_path]; MultiByteToWideChar (cp_thread_acp,mb_precomposed,

In VC + + to join the custom message, the following methods can be used for reference ... 1 define the message first: for exampledefine WM_MYMESSAGE (WM_USER+100) 2 in the. h file, add a message response function, such as: LONG OnMyMessage(WPARAM w,LPARAM l); the function has a specified format:LONG Function_Name(WPARAM w,LPARAM l); 3 Join message response macros In the class that responds to the message, in the message response block, BEGIN_MES

the server and client side, to achieve data transfer based on TCP/IP, and finally give the relevant source code. VC in the Winsock API programming development, you need to use the following three files in the project, or there will be a compilation error. 1. WINSOCK. H: This is the header file for the Winsock API and needs to be included in the project. 2. WSOCK32. Lib:winsock API Connection library file. In use, be sure to include it in the proje

directory to change the resource file name to Example_ch.rc, and then add the Example_ch.rc file in the VC compiler, close the project. Then create an English version of the project with the same name. That is, choose English when choosing a resource language (you can save it in a different directory) After the creation, the English version of the directory to copy the Example.rc file to the Chinese project directory, in fact, we just want this r

Matcom is a tool that mathtools the company to convert m files to the same functional C + + code. Compared with the compiler compiler MATLAB, it is simpler and more convenient to transform the code with matcom. This article will combine the author programming experience, take VC6.0 and matcom as an example, detailed introduction how to use matcom to carry on the joint programming of VC and MATLAB. matcom install VC6.0 before installing matcom. The Se

JNI is part of the JDK and is used to provide Java with a local code interface. Programs written with JNI can ensure that your code is fully ported to all platforms. JNI enables Java code that runs on a JVM virtual machine to manipulate applications and libraries written in other languages, such as C + + and assembly language. In addition, some of the APIs provided by JNI allow you to embed the JVM in your local application. The following figure expresses the role that JNI plays. This article w

In the VC environment, the assembly code is called. Programming Environment: VC6 and MASM 6.11 The main program is as follows: Masm_C.cpp:Defines the entry point for the console application. // #include extern "C" int _cdecl Add (int a); void Main () { int a = 1; printf ("Before add (a) a =%d/n", a); A = Add (a); Add implements a simple addition to a sub-function, which is implemented using a compilation printf ("After add (a) a =%d/n", a); Ret

contains very few false edges, but because the threshold is high, the resulting image edge may not be closed, the problem is not resolved to use another low threshold value. In a high-threshold image, the edge is linked to a contour, and when the endpoint of the contour is reached, the algorithm looks for a point in the 8 neighborhood point of the breakpoint that satisfies the low threshold, and then collects the new edge from that point until the entire image edge is closed. The above is for t

Sliding controls are one of the most commonly used controls in Windows. In general, it consists of a slider bar and an optional scale, which allows the user to display the corresponding value in the corresponding control by moving the slider. Typically, there must be a Label control or an edit box control near the sliding control to display the corresponding value. Sliding controls are widely used in applications, as you can see in the properties of the desktop. For this, let's take a look at ho