Mixing Native and Managed Types in C++

From:Mixing Native and Managed Types in C++ Mixing Native and Managed Types in C++ Wow, its turning into a busy month. I just haven’t had any time to blog despite having a number

[Tip: C# intptr]Intptr VS int

C# contains a struct called Intptr, which aims to be the same position as void* in unmanaged world. So it will be 32bit on x32 hardware and OS and be 64bit on x63 platform. So be careful about misusing it with int. Int keeps 4 bytes on any

[tip]如何學好C語言

不要找借口。這一條路走下來並不容易,不要給自己找借口。我最不喜歡聽到的就是“很忙,沒有時間”這樣的借口。 我以前在銀行做項目,早9點到晚10點,周一到周六,我一樣可以每天抽1個小時來看書和專研,一年下來也能精讀5、6本書。我現在的工作項目和招聘任務很 緊張,剛生的小孩只有自己和老婆兩人帶,還需要準備講課,但是我還是能夠找到時間看文章寫文章維護酷殼。所以,我可以告訴你,“時間就像乳溝,只要你肯

[Tip]Project Setting Diff for C++/C#

1. VS project setting regards with platformFor native c++ project, there are debug | win32, debug | x64, release | win32, release | x64 configurations. Note:"debug" / "release" can be renamed while "win32" / "x64" can't.For .net project, the

C++/CLI Boxing/UnBoxing and Ref/Out Issue

1. Boxing and UnBoxing in C++/CLIint^ hi = 123;int c = *hi;2. Use C# functions with ref/out arguments in C++/CLIIf the argument is dotNet value type, then directly create an instance of it on stack in C++/CLI and pass it when calling the C# function;

[Tip: using namespace in C++/CLI]

In a managed C++ project, we can use the “using namespace” expression to include managed types. Just like using “#include” incorrectly will cause some compile error, declaring “using namespace”  globally will cause some problems too. We encountered “

[C# Tip]How to: Convert System::String to wchar_t* or char*

(MSDN)You can use PtrToStringChars in Vcclr.h to convert String to native wchar_t * or char *. This always returns a wide Unicode string pointer because CLR strings are internally Unicode. You can then convert from wide as shown in the following

[C#]Class and struct differences

From MSDNStructs differ from classes in several important ways: Structs are value types (Section 11.3.1).All struct types implicitly inherit from the class System.ValueType (Section 11.3.2).Assignment to a variable of a struct type creates a copy

how to locate dll in native c++ world / dotnet world?

總結:1. 對於native c++ world來說,Dynamic-Link Library Search Order 說的很清楚了。就是還有一個疑問:如果在任意目錄建立一新folder,把一個application需要的plugin之類的dll及dependency dlls都放在裡面,在load這個plugin需要的dependency dlls時 (If a DLL with dependencies is loaded by specifying a full path, the

[時刻準備]C知識點複習

1. 關於分行符號“\”。用途主要有二:長宏和長字串。 把一個預先處理指示寫成多行要用“\”續行,因為根據定義,一條預先處理指示只能由一個邏輯程式碼組成。而把C代碼寫成多行則不必使用續行符,因為換行在C代碼中只不過是一種空白字元,在做文法解析時所有空白字元都被丟棄了。在Linux的shell命令中亦可使用該分行符號,在擊斷行符號鍵之前輸入“\”,即可實現多行命令輸入。注意:這種續行的寫法要求“\”後面緊跟分行符號,中間不能有任何其他的字元。2.

[轉載]The Biggest Changes in C++11 (and Why You Should Care)

文章目錄 Lambda ExpressionsUniform Initialization SyntaxDeleted and Defaulted FunctionsnullptrDelegating ConstructorsRvalue ReferencesC++11 Standard Library rValue

[c++ 11x rvalue reference]

1. 什麼是rValue?lValue呢?rValue主要是指沒有名字的變數(即臨時變數/對象);lValue主要是指有名字的變數。除了lValue都是rValue(廢話)。下面的例子可以比較直觀的協助理解:int&& n = 42;  // OK; 42 is an rvalue; n is rvalue reference.int k = n;     // OK; n is rValue reference and is lValue.int&& j =

C# 時間函數

時間間隔的函數是類似vb裡的DateDiffDateTime dt1 = new DateTime(2002,11,1);TimeSpan ts = DateTime.Now- dt1;double d = ts.TotalDays;//本周是本年第幾周private int DatePart(System.DateTime dt){int weeknow = Convert.ToInt32(dt.DayOfWeek);//今天星期幾int daydiff = (-1) * (weeknow+1

一份C語言訊息處理的模板

閱讀代碼時提取出來的,是一個冷門的東西,也記不清從哪下的了,貼代碼吧,覺得封裝的還成: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->//msg.h#ifndef __MSG_H__struct CMD_HANDLER_ENTRY{void (*handler)(int,char**);int args;char *name;char *help;

C#版簡單播放器

C#版簡單的播放器,實現了播放清單、全部隨機播放、開啟,儲存播放清單、讀取MP3title資訊等功能(可以去進一步完善,比如mp3 title資訊為空白,就顯示他的檔案名稱)播放進度,在擷取mp3長度時候,調用currentMedia.duration 遇到一些問題,就沒有寫,希望大家誰完成了,回個帖,我也學習一下源碼地址:http://files.cnblogs.com/shiweifu/MySinger.rar

用C#實現SOCKS5代理服務(源碼公開)

早上,逛園子時看到breeze寫了一篇Socks5代理協議的文章《C# 實現Socket5代理協議通訊 》,並在評論裡看到howaaa說“順便也講講用C#實現一個Socks5Proxy 伺服器吧,這方面資料很少,相信很有價值”,於是一時興起,花了一個下午的時間搗鼓出Socks5代理的服務端程式。程式很簡單(只要弄懂了Socks5協議就基本明白了)、代碼很零亂。有興趣的可以看看,沒興趣的就飄過吧,嘿嘿....在breeze的文章中少了一個密碼身分識別驗證的講解,在這裡我補一下。==========

C#用DataSet操作Xml的代碼

/* * ? SharpDevelop ??? * ??: Administrator * ??: 2008-1-9 * ??: 17:18 *  * ??????????,?????“?? | ?? | ?? | ??????”? */using System;using System.Collections.Generic;using System.Drawing;using System.Windows.Forms;using System.IO;using

Tiny C Complier/TCC

FeaturesSMALL! You can compile and execute C code everywhere, for example on rescue disks (about 100KB for x86 TCC executable, including C preprocessor, C compiler, assembler and linker).FAST! tcc generates x86 code. No byte code overhead. Compile, a

C語言 LRC歌詞檔案解析

相顧無言,唯有貼代碼,請上眼:#include <stdio.h>#include <string.h>#include <assert.h>#define STRLEN 256//只是去掉時間標記char *parse_lrc_line(char *line){char *p = NULL;p = strrchr(line,']');if(p == NULL){goto END;}p = p + 1;END:return

C# 匯出資料到Excel模板中

今天做報表的時候遇到了多表頭的問題,而且相應的報表的格式都一樣。所以就採用了報表範本的方式來進行。第一步:在開發的當前項目中引入:Microsoft.Office.Interop.Excel;System.Reflection;命名空間。第二步:擷取要匯出的資料;第三步:建立一個Excel 應用程式: //需要添加 Microsoft.Office.Interop.Excel引用 Microsoft.Office.Interop.Excel.Application app = new

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