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Handling List-types with Esqueleto
...ou to use a classic SQL queries. You can run n+1 queries, but do that only if it is rare and not often usable function, that for example prepares cached data (based on your variables names I suppose that it may not be heavy used and it worth a try). For heavy usage you should consider using classic ...
VC 对话框背景颜色、控件颜色 - C/C++ - 清泛网 - 专注C/C++及内核技术
...准):
void CExampleDlgDlg::OnPaint()
{
if (IsIconic())
…
else
{
CRect rect;
CPaintDC dc(this);
GetClientRect(rect);
dc.FillSolidRect(rect,RGB(0...
LVN_ITEMCHANGED通知会响应多次的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
...GED通知会响应多次(三次)的问题及替代方案。
#define LVIF_STATE 0x0008
#define LVIS_FOCUSED 0x0001
#define LVIS_SELECTED 0x0002
// 在CListCtrl派生类中响应LVN_ITEMCHANGED消息
void CNewListCtrl::OnItemchanged(NMHDR* pNMHDR, LRESULT* ...
MFC判断窗口是否最小化、最大化 - C/C++ - 清泛网 - 专注C/C++及内核技术
...小化、最大化最小化判断方法:如果是判断本窗口的话:if (IsIconic()){ 最小化时的处理逻辑}如果是判断别的窗口的话:if (xxxDlg->IsIconic(...最小化判断方法:
如果是判断本窗口的话:
if (IsIconic())
{
//最小化时的处理逻...
VC CTreeCtrl复选框checkbox的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ckTree(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
CPoint point;
UINT uFlag; //接收有关点击测试的信息的整数
HTREEITEM hTree;
BOOL bCheck;
GetCursorPos(&point); //获取屏幕鼠标坐标
m_...
ifstream 线程安全读文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
ifstream 线程安全读文件函数 safeGetline:std::istream& safeGetline(std::istream& is, std::string& t){ t clear(); 使用std::streambuf 函数 safeGetline:
std::istream& safeGetline(std::istream& is, std::string& t)
{
t.clear();
//这比使用std::istream逐个读...
phpcms v9内容页/下载页更新时间(updatetime)为空的解决方法 - 更多技术 ...
...ms/modules/content/content.php
public function add() {
if(isset($_POST['dosubmit']) || isset($_POST['dosubmit_continue'])) {
define('INDEX_HTML',true);
$catid = $_POST['info']['catid'] = intval($_POST['info']['catid']);
...
C++简练易用的线程池(threadpool)及上下文隔离的无锁线程池(isolated_threa...
...s>
auto commit(F&& f, Args&&... args) ->future<decltype(f(args...))>
{
if (!_run)
throw runtime_error("commit on ThreadPool is stopped.");
using RetType = decltype(f(args...)); // typename std::result_of<F(Args...)>::type, 函数 f 的返回值类型
auto task = make_shared<packaged_ta...
gcc编译警告:misleading-indentation - C/C++ - 清泛网 - 专注C/C++及内核技术
...格的缩进问题导致。实例1:Tab、空格混用将:[空格] if(err)[空格] fprintf(stderr, "op faile misleading-indentation(不正确的缩进),一般都是Tab及空格的缩进问题导致。
实例1:Tab、空格混用
将:
[空格] if(err)
[空格] ...
How to append a char to a std::string?
...
You want to be careful with this because if you get into the habit, this will compile just fine if y is a char* instead of std::string. It'd add d characters to the pointer y.
– Zan Lynx
Mar 14 '11 at 23:28
...
