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File Hash 扩展:文件哈希计算和 Base64 编码文件,sha256、sha512 哈希 ·...

...概述 扩展特性 截图 函数 使用示例 基本文件哈希计算 同时计算 SHA256 和 SHA512 文件完整性验证 Base64 编码扩展 Base64 函数 B...
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How to prevent a background process from being stopped after closing SSH client in Linux

...hat every other app has done since the beginning -- double fork. # ((exec sleep 30)&) # grep PPid /proc/`pgrep sleep`/status PPid: 1 # jobs # disown bash: disown: current: no such job Bang! Done :-) I've used this countless times on all types of apps and many old machines. You can combine ...
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Colors with unix command “watch”?

...t know the flags or there isn't you can make a poor's man watch by: while sleep <time>; do clear; <command>; done It will have a bit of flicker (watch works "double buffered") but for some stuff it is useful enough. You may be tempted to make a double buffered poor man's watch using ...
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What does the 'static' keyword do in a class?

...s if they were instance members, e.g. // Bad code! Thread.currentThread().sleep(5000); someOtherThread.sleep(5000); That makes it look as if sleep is an instance method, but it's actually a static method - it always makes the current thread sleep. It's better practice to make this clear in the ca...
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AfxGetApp->GetMainWnd() 与 AfxGetMainWnd() - C/C++ - 清泛网 - 专注C/C++及内核技术

...只不过不是主线程罢了.还有就是用API Createthread之类的函数创建的线程无法生成CWinThread对象.所以如果想使用CWinThread对象里的函数,以及一些全局函数进行操作,如上面的AfxGetMainWnd(),就必须用CWinThread对象的CreateThread函数,...
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MFC OnKeyDown没反应,不响应键盘操作 - C/C++ - 清泛网 - 专注C/C++及内核技术

...键盘操作在MFC中添加键盘的消息响应,通常是通过OnKeyDown函数来完成消息的捕捉和响应。afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, U...在MFC中添加键盘的消息响应,通常是通过OnKeyDown函数来完成消息的捕捉和响应。 afx_msg void OnKeyDow...
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ON_COMMAND_EX、ON_COMMAND区别 - C/C++ - 清泛网 - 专注C/C++及内核技术

...参数个数相同,含义一样。 但是扩展映射宏的消息处理函数的原型和对应的普通映射宏相比,有两个不同之处: 一是多了一个UINT类型的参数,另外就是有返回值(返回BOOL类型)。 回顾4.4.2章节,范围映射宏ON_COMMAND_RANGE的消...
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error C2804:binary \'operator +\' has too many parameters - C/C++ - 清泛网 - 专注C/C++及内核技术

...方法:+操作符包括两个操作数,应该重载为普通非成员函数。 注意重载操作符的形参数目(包括成员函数的隐式 this 指针)与操作符的操作数数目相同。对称的操作符,如算术操作符、相等操作符、关系操作符和位操作符,最...
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error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private ...

... required here这个错误的原因大概是std::ios_base类的拷贝构造函数是私有的,从return s语句返回时缺少一个合成的构造拷贝构造函数完成流的复制。错误代...这个错误的原因大概是std::ios_base类的拷贝构造函数是私有的,从return s语句...
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error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘c...

...dynamic_cast,它要求父类必须为多态的,即要求至少有一个虚函数,因此...在将父类型转换为子类型时,可以使用static_cast和dynamic_cast.如果使用dynamic_cast,它要求父类必须为多态的,即要求至少有一个虚函数,因此需要仔细检查类定义中有...