其他

malloc與free是C++/C語言的標準庫函數，new/delete是C++的運算子。它們都可用於申請動態記憶體和釋放記憶體。　　對於非內部資料類型的對象而言，光用maloc/free無法滿足動態對象的要求。對象在建立的同時要自動執行建構函式，對象在消亡之前要自動執行解構函式。由於malloc/free是庫函數而不是運算子，不在編譯器控制許可權之內，不能夠把執行建構函式和解構函式的任務強加於malloc/free。　　

Things to Remember：在一個獨立的語句中將 new 出來的對象存入智能指標。如果疏忽了這一點，當異常發生時，可能引起微妙的資源泄漏。下面這個函數調用還是可能泄漏資源。為什嗎？processWidget(std::tr1::shared_ptr<Widget>(new Widget), priority());　　下面就來說明這是如何發生的。　　在編譯器能產生一個對 processWidget

[轉載自： http://www.cppblog.com/szhoftuncun/archive/2007/10/31/35356.html]#pragma once與 #ifndef的區別 Specifies that the file will be included (opened) only once by the compiler when compiling a source code file. 1   #ifndef方式2   #pragma

1. Multibyte shows to us as char*. While in fact, it can be any code page encoding, including gbk, utf8, etc. If a char* represents utf8 characters, we need to handle it specially in below way:// Convert unicode(windows default utf16) to utf8 char*

      An exception is an event that occurs during the execution of a program, and requires the execution of code outside the normal flow of control. There are two kinds of exceptions: hardware exceptions and software exceptions. Hardware exceptions

Essence: Wrap functions to read/write things from another module. Windows keep seperate heaps for debug and release - built DLLs and EXEs. So for example, calling a release DLL from a debug application EXE,  any memory we allocate needs to be

文章目錄 Problem [http://www.gotw.ca/gotw/054.htm]另可以參考：http://blog.csdn.net/zzpzheng/archive/2006/03/27/639876.aspx Using Vector and Deque Difficulty: 8 / 10What is the difference between vector and deque? When should you

For the details on how to initialize a GUID, check this page http://support.microsoft.com/kb/130869. (definitely we are using a new version compiler! So get to use #include<initguid.h>)Summary of a problem I met and finally find the above

Manifests are XML files that accompany and describe side-by-side assemblies or isolated applications. Manifests uniquely identify the assembly through the assembly's <assemblyIdentity> element. They contain information used for binding and

static_cast：強制類型轉換cast。因此，當然可以用於有繼承關係的類之間的cast，細分有三類：upcast：Just same as dynamic_cast. 由於不用做runtime類型檢查，效率比dynamic_cast高；downcast：不安全得很。不建議使用。crosscast：不能用。帶來編譯錯誤。dynamic_cast：有繼承關係的類之間的cast。非常安全，但是由於需要做runtime類型檢查，並且需要virtual

Get it from: http://msdn.microsoft.com/zh-cn/magazine/cc188714(en-us).aspxIn one word, in order to use STL string to be adaptive with Unicode, the best way is to define a tstring as follows:#include<string>#ifdef _UNICODE#define tstring

文章目錄 輸出輸出輸出輸出輸出輸出輸出 [MSDN:http://msdn.microsoft.com/zh-cn/library/ms235631(VS.80).aspx]從 char * 轉換 樣本此樣本示範如何從 char * 轉換為上面列出的其他字串類型。 複製代碼// convert_from_char.cpp // compile with: /clr /link comsuppw.lib

From MSDN:To simplify code development for various international markets, the Microsoft run-time library (CRT) provides Microsoft-specific "generic-text" mappings for many data types, routines, and other objects. These mappings are defined in

Visual Studio Solution[MSDN: http://msdn.microsoft.com/en-us/library/bb165922(VS.80).aspx]Overview of Solutions A solution is a grouping of one or more projects that work together to create an application. The project and status information that

[Copied From C++ Coding Standards--chapter 8] We define premature optimization as making designs or code more complex, and so less readable, in the name of performance when the effort is not justified by a proven performance need (such as actual

1. Inline function expansion，內嵌函式擴充的三種最佳化（使用內聯可以節省函數調用的開銷，加快程式速度）：Disable不使用內聯；Only __inline，僅函數定義前有inline或__inline標記使用內聯；Any Suitable，除了inline或__inline標記的函數外，編譯器“覺得”應該使用內聯的函數，都使用內聯。 2. Enables minimal rebuild，通過儲存關聯資訊到.IDB檔案，使編譯器只對最新類定義改動過的源檔案進行重編譯，

[Copied from C++ coding standards-chapter 9] Easy on yourself, easy on the code: All other things being equal, notably code complexity and readability, certain efficient design patterns and coding idioms should just flow naturally from your

MFC Library Reference[MSDN: http://msdn.microsoft.com/zh-cn/library/0asx94f7(VS.80).aspx] Managing the State Data of MFC ModulesThis article discusses the state data of MFC modules and how this state is updated when the flow of execution (the path

[轉載自： http://mindhacks.cn/2009/03/09/first-principles-of-programming/] 半年前，JoelOnSoftware和CodingHorror合搞的stackoverflow.com剛上線不久，我興沖沖地跑過去扔了一個問題：你們認為編程的首要原則是什嗎？ 作為我的學習原則的一個實踐： 8. 學習一項知識，必須問自己三個重要問題：1. 它的本質是什麼。2. 它的第一原則是什麼。3.

CString::LoadString(UINT nID)Conclusion: the correct way to load string resource by ID is to call CString::LoadString(HINSTANCE hInstance,UINT nID), specifying the dll handler you want to search for.ProblemCString::LoadString(UINT nID) will first