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Center Oversized Image in Div

... <div class="imageCenterer"> <img src="http://placekitten.com/200/200" /> </div> </div> CSS: .imageContainer { width: 100px; height: 100px; overflow: hidden; position: relative; } .imageCenterer { width: 1000px; position: absolute; left: 50%; top: 0; ...
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How to find if a given key exists in a C++ std::map

... You don't need to do > 0, == 1 or != 0; that's the exact check C++ does in an if statement (condition != 0), so you can just use if(m.count(key)) – jv110 Dec 16 '16 at 20:50 ...
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RAII and smart pointers in C++

In practice with C++, what is RAII , what are smart pointers , how are these implemented in a program and what are the benefits of using RAII with smart pointers? ...
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Best C++ Code Formatter/Beautifier

... lots of source code formatting tools out there. Which ones work best for C++? 1 Answer ...
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C++ HICON与HBITMAP相互转换 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++ HICON与HBITMAP相互转换HBITMAP转HICON 方法一:HICON HICONFromCBitmap( CBitmap& bitmap){BITMAP bmp;bitmap.GetBitmap(&bmp);HBITMAP hbmMask = ::CreateCompatibleBitm...HBITMAP转HICON 方法一: HICON HICONFromCBitmap( CBitmap& bitmap) { BITMAP bmp; bitmap.GetBitmap(&bmp); ...
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c++ Timer使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

c++ Timer使用总结本文总结了窗口应用程序、控制台程序、多线程中分别使用Timer的方法,均提供实例参考。窗口应用程序使用Timer: #define TIMER_ID 1000 //定时器ID,可任意。触发后回调函数中用于区别同的定时器以执行同的...
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c++ boost库 序列化与反序列化 - C/C++ - 清泛网 - 专注C/C++及内核技术

c++ boost库 序列化与反序列化1、定义类 结构体序列化函数:template <typename Archive>void serialize(Archive& ar, TOrder & obj, const unsigned int ver...1、定义类/结构体序列化函数: template <typename Archive> void serialize(Archive& ar, TOrder & obj, const unsign...
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c++读注册表 - C/C++ - 清泛网 - 专注C/C++及内核技术

c++读注册表直接上代码:CString key;key.Format(_T("Software Microsoft Windows CurrentVersion App Paths xxx"));HKEY hKey;LONG rc = R...直接上代码: CString key; key.Format(_T("Software\\Microsoft\\Windows\\CurrentVersion\\App Paths\\xxx")); HKEY hKey; LONG rc = Reg...
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C++类的前置申明 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++类的前置申明class A; (而非 include "A.h",可能暂时都没有类A的定义)使用前置申明后,只能使用A的指针(32位编译器占4字节,64位编译器占8字节...class A; (而非 include "A.h",可能暂时都没有类A的定义) 使用前置申明后,...
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C++的内部类 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++的内部类标准C:能访问内部类的private成员。但编译器编译能通过且报错。标准C:能访问内部类的private成员。 但编译器编译能通过且报错。C++ 内部类