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How to check if activity is in foreground or in visible background?
I have a splash screen on a timer. My problem is that before I finish() my activity I need to check that the next activity has started because a system dialogue box pops-up and I only want to finish() ; once the user has selected an option from the dialogue box?
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How do I validate a date string format in python?
I have a python method which accepts a date input as a string .
5 Answers
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C++, What does the colon after a constructor mean? [duplicate]
I have some C++ code here:
6 Answers
6
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Calling C++ class methods via a function pointer
How do I obtain a function pointer for a class member function, and later call that member function with a specific object? I’d like to write:
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SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
I hope that made sense, let me elaborate:
10 Answers
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C++ 线程安全的单例模式 - C/C++ - 清泛网 - 专注C/C++及内核技术
...的懒汉模式：
class Singleton
{
private:
static Singleton* m_instance;
Singleton(){}
public:
static Singleton* getInstance();
};
Singleton* Singleton::getInstance()
{
if(NULL == m_instance)
{
Lock();//借用其它类来实现，如boost
if(N...
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
...和红色文本，步骤如下：
① 新建一个基于Dialog的MFC AppWizard应用程序ExampleDlg。
② 在CExampleDlgApp ::InitInstance()中添加如下代码：
BOOL CExampleDlgApp: : InitInstance ( )
{
… CExampleDlgDlg dlg;
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%d,%c,%s,%x等转换符 释义 - C/C++ - 清泛网 - 专注C/C++及内核技术
...志〕〔输出最少宽度〕〔．精度〕〔长度〕类型
"％-md" ：左对齐，若m比实际少时，按实际输出。
"%m.ns"：输出m位，取字符串(左起)n位，左补空格，当n>m or m省略时m=n
e.g. "%7.2s" 输入CHINA
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CreateWindow()动态创建一个EditBox - C/C++ - 清泛网 - 专注C/C++及内核技术
CreateWindow()动态创建一个EditBox在Win32代码或MFC代码中动态创建一个EditBox：在OnInitDialog()函数中： 创建EditBox HWND m_wndEdit = CreateWindow(_T("EDI...在Win32代码或MFC代码中动态创建一个EditBox：
在OnInitDialog()函数中：
// 创建Edit...
MFC 时间控件CDataTimeCtrl使用（获取日期、时间字符串等） - C/C++ - 清泛...
MFC 时间控件CDataTimeCtrl使用（获取日期、时间字符串等）设置显示格式： 只显示小时( (CDateTimeCtrl*)GetDlgItem(IDC_StartHour) )->SetFormat(_T("HH"));获取控件的值：CTime m_date;( (CDa...设置显示格式：
//只显示小时
( (CDateTimeCtrl*)GetDlgItem(IDC_S...