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How do function pointers in C work?
...u have brokenly implemented is Javascript-style prototype-based OO. To get C++/Pascal-style OO, you'd need to: 1. Have a const struct for a virtual table of each class with virtual members. 2. Have pointer to that struct in polymorphic objects. 3. Call virtual methods via the virtual table, and all ...
Which iomanip manipulators are 'sticky'?
...
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Multiple INSERT statements vs. single INSERT with multiple VALUES
... similar situation trying to convert a table with several 100k rows with a C++ program (MFC/ODBC).
Since this operation took a very long time, I figured bundling multiple inserts into one (up to 1000 due to MSSQL limitations). My guess that a lot of single insert statements would create an overhead...
Learning assembly [closed]
...ybe being able to write more efficient parts of code (for example, through c++), doing somethings like code caves, etc. I saw there are a zillion different flavors of assembly, so, for the purposes I mention, how should I start? What kind of assembly should I learn? I want to learn by first doing so...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...t Lookup, describes how unqualified names are looked up by the compiler in C++.
The C++11 standard § 3.4.2/1 states:
When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqualified lookup (3.4.1) may be searched, and in ...
ON_COMMAND_RANGE 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
ON_COMMAND_RANGE 用法申明消息宏 + 回调函数模型，其他没什么好解释的。BEGIN_MESSAGE_MAP(CxxDialog, CDialog)
ON_COMMAND_RANGE(IDC_BUTTON_1, IDC_BUTTON_ALL, OnButtonClick)
END_MESSAGE_MAP()
afx_msg void OnButtonClick(UINT nID);ON_COMMAND_RANGE, MFC
libcurl网络连接使用tcp/ip - C/C++ - 清泛网 - 专注C/C++及内核技术
... /* always cleanup */
curl_easy_cleanup(curl);
}
//对于错误的处理
if( res == CURLE_OK && iolen > 0 )
{
//处理数据
printf("Received %lu bytes.\n", iolen);
}
elseif( res == CURLE_RECV_ERROR)
{
CCAssert(...
MFC Telnet Application（mfc telnet 端口，代码实现、不调用telnet.exe） ...
...调用telnet.exe。程序源码工程升级后，可能出现编译不过的情况，请将stdafx.h中0x0410全部改为0x0501即可。The article demonstrates an MFC GUI Telnet application with server capabilities for incoming connections support.
Download demo - 29.9 KB
Download source - 42....
控件不响应OWNERDRAW消息 - C/C++ - 清泛网 - 专注C/C++及内核技术
... ....
}
}
中自绘不生效，调用CListCtrl的RedrawItem后不触发OnDrawItem函数。
这是由于没有设置自绘项，设置方法如下：
控件右键“属性”：
OWNERDRAW 消息
error MSB6006: “cmd.exe”已退出，代码为 3 - C/C++ - 清泛网 - 专注C/C++及内核技术
...台电脑上使用cmake编译后拷贝到另一台电脑上，但是cmake的路径与原电脑不一致从而导致以上错误。
解决方法：新电脑上重新使用cmake生成一次工程文件即可解决。error MSB6006 cmake