We often encounter the need to build multiple threads so that we can execute multiple events at the same time. This is also our VC in the development of a foundation, although I have used many times, but also often forget. This time write down, as a note, for everyone to learn to provide convenience.
In VC, nothing but create thread and write thread functionFirst, the conventional method: pure use platform
Tags: des style blog http io color ar os spthis time the variable is mainly for MFC's Cstring type of variable (front VC link Access database insert variable to table)Ideas1 Convert CString type to string2 string to char array 3 sprintf Write array string to char Array functionchar* Zhuanhuan (std::string src) {char *dst = new char[255];int i; int j=src.length (); for (I=0;i Code reference:OpenAccess (); CString Cmbparam = L "Selfimprovement"; std:
When defining strings in VC ++, use _ t to ensure compatibility. VC ++ supports both ASCII and Unicode character types. When _ t is used to ensure conversion from the ASCII encoding type to the Unicode encoding type, the program does not need to be modified.
If you do not plan to upgrade to Unicode in the future, you do not need to upgrade _ T.
_ T ("Hello World ")
In the ANSI environment, it is ANSI. If it
When we use software, we often see many dynamic connection libraries. The dynamic Connection Library has its own advantages, such as memory saving and multi-language support. In addition, when the function in the DLL changes, the called function does not need to be re-compiled as long as it is not a parameter change. This is very useful in programming. As for other highlights, you can see it in computer magazines and books. I am talking nonsense here.This time, I want to talk about how to make m
. A format Lib, so VC does not support only mingw), copy the header file to the include directory of mingw, And put lib (two. file a: libgsl. A And libgslcblas. a) Put it under the same directory of your source code, and then you can call the GSL function in the program!The following is an example# I nclude # I nclude Int main (){STD: cout STD: cout STD: cout }
If you want to use GSL in the VC compiler, You
The VC processing process is roughly divided into two steps: Compilation and connection. After the source file is compiled and translated, all the. objfile named .objfile and the. libfile are connected to the. exe file or. dll file. Next, we will discuss the details of these two steps.
Compilation parameter settings. The project-> Settings-> C/C ++ page of the VC menu is used. We can see the content in proj
automatically jump from the build window to the debug window, where the trace content will be displayed, ^_^
The following is a detailed description of the trace:
====================================
Trace macro is very useful for program debugging in VC and has functions similar to printf. This macro only appears in the debug version of the program, when release is enabled, the macro disappears completely, helping you reduce the amount of code
Bytes
Source: excellent products
Http://blog.elitehome.cn
Author: Hua Yu
Over the past few days, I have been studying the managed and unmanaged hybrid programming of VC. net.
As an excellent development platform,. Net enables developers to quickly develop interfaces and applications. However, it is easy to decompile the. NET hosted code, which brings a lot of trouble to developers. The unmanaged code of VC.
When we use software, we often see many dynamic connection libraries. Dynamic Connection Library has its own advantagesSuch as memory saving and multi-language support. If the function in the DLL changesThe called function does not need to be re-compiled. This is very useful in programming. For other highlightsIt can be seen in magazines and books. I am talking nonsense here.This time, I want to talk about how to make my own Win32 DLLs in VC5.0.To dynamically connect to the database, you must fi
This error occurs in C/C ++: spawning cl.exe error spawning link.exe
A lot of people say it is the starting Question of the setup. I think it is caused by the absence of the cl.exe‑link.exe file in the installation environment.
“Cl.exe”and “link.exe "are the true compilers and connection programs used by VC. Their paths are under" VC root directory/vc98/bin, you can find the application in the correspondin
A callback function is a very useful and important concept.
When an event occurs, the system or other functions automatically call a function. Callback functions are widely used in Windows programming, such as hook callback functions: mouseproc, getmsgproc, enumwindows, and drawstate callback functions. There are also many system-level callback processes. This article will not introduce these functions and procedures, but will talk about some experiences in implementing your own callback functio
WMI (Windows Management Instrumentation) is a management framework that can be used with system information (including software and hardware) in windows. WMI can be used to conveniently manage machines. Now let's take a look at the changes from VC ++ to. Net by taking the wmito bypass or create a notebook (notepad.exe) process as an example. Let's take a look at how. Net frees programmers from tedious programs.
1. Pre-work:In
Use GDI + plotting in VC ++ 6.0
1. Configure the GDI + Environment in VC ++ 6.0
1.1 download the GDI + Library
There is no GDI + Library in VC ++ 6.0. FromHttp://www.crazy-bit.com/download/gdiplus.zipDownload.
1.2 copy the GDI + File
Decompress the downloaded file. Copy the include file to the include directory of the
Remember how to process controls in VB, so easy. First, draw a control in the window, then give it a name, and all the operations on the control in the Code are referenced through this name. For example, if you want to change some attributes of the control, you can call its attributes through this name and assign the expected values to the attributes. For another example, you need to use a method of the control, that is, name. xxx. That's it.
But what about
The debug configuration of VC ++ projects is the configuration that most debugging and development is done on. this is entirely appropriate because the debug information, lack of optimizations, and the extra debug checks in the Microsoft libraries, make stepping through your code and finding bugs much easier than in release builds.
However, sometimes you have to try and debug your release builds. Possible reasons include:
You may have a bug that onl
time in the memory space of Class A need to have a vfptr_a point to the table. sizeof (A) is also easy to determine, for 4.2, for Class B, because Class B virtual basis of Class A, but also have their own virtual function. Then class B first has a vfptr_b, pointing to its own virtual function table. Also char j[3], do once alignment, the general size is 4. How can virtual inheritance be implemented? This is AH problem! I did not know before, fortunately, C + + Object model is introduced. The fi
Add comments with VC Assistant (VA)Today, you want to add the copyright information to the code you wrote, and to sort out the comments. But in order to maintain the same format, always copy, it seems a bit cumbersome. Then try to find a solution. I'm using vs 2010, and I just started trying to modify the template under the VS installation path, but I didn't respond to the changes. Try again, by adding snippets to the project, but no C + + is found in
VC and MATLAB mixed programming call dynamic link library dll--1, is the first to establish the M file matlab.Ellipsefit.mIt contains: function [Xc,yc,a,b,phi,p]=ellipsefit (x, y)2.MCC command compilation generated by H, DLL, lib and other filesIn the MATLAB command line, enter:Mcc-b csharedlib:ellipsefit ELLIPSEFIT.M (this mode is C-style function)(The specific command meaning can be referred to "proficient in MATLAB and C + + mixed Programming" Liou
PHP calls the COM component instance compiled by VC. 1. create COM component with VC 1. create project-ATL project with vc, enter the name ComTest, and ComTest will be used as the name of COM component. 2. complete the wizard without any changes to the ATL Project Wizard. Direction
1. use VC to create COM components1.
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