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What is the meaning of addToBackStack with null parameter?

I have a customer code. There is only one activity for all of the fragments i.e. the single activity is managing all the fragments. ...
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Understanding $.proxy() in jQuery

...sents the element that was clicked. But what if we wanted a short delay before adding the class? We might use a setTimeout to accomplish it, but the trouble is that whatever function we give to setTimeout, the value of this inside that function will be window instead of our element. $('#myElement'...
https://www.tsingfun.com/it/cpp/951.html 

ATL COM开发入门(一)(JS调用ActiveX/COM组件) - C/C++ - 清泛网 - 专注C/C++及内核技术

...接口方法:ConcatStr,并定义接口参数 这时,AtlDemo.idl文件中新增了一个接口: interface IAtlDemoIf : IDispatch{ [id(1)] HRESULT ConcatStr([in] BSTR* pStr1, [in] BSTR* pStr2, [out,retval] BSTR* pRetStr); }; AtlDemoIf.h中新增了一个公开成员函数: S...
https://www.tsingfun.com/it/cpp/1537.html 

CreateWindow()动态创建一个EditBox - C/C++ - 清泛网 - 专注C/C++及内核技术

...了EditBox,需要处理其输入事件,如下: 先给它设置一个ID(可以在resource.h中指定) m_wndEdit = CreateWindow(_T("EDIT"), 0, WS_CHILD | WS_VISIBLE | ES_WANTRETURN, 70, 4, 60, 16, m_hWnd, (HMENU)IDC_EDIT_SEARCH, (HINSTANCE)GetWindowLong(m_hWnd, GW...
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MFC中MDI消息处理流程 - C/C++ - 清泛网 - 专注C/C++及内核技术

...为: 1) MDI主窗口(CMDIFrameWnd)收到命令消息WM_COMMAND,其IDID_XXX; 2) MDI主窗口将消息传给当前活动的MDI子窗口(CMDIChildWnd); 3) MDI子窗口给自己的子窗口(View)一个处理机会,将消息交给View; 4) View检查自己Message Map; 5) ...
https://www.tsingfun.com/it/cpp/2149.html 

Picture Control(图片控件)中静态显示位图,解决位图不显示的问题 - C/C++ ...

...Picture Control(图片控件)中静态显示位图,代码如下: void CShowBmpDlg::OnBnClickedButton1() { //从资源中加载图片 CBitmap bitmap; //加载指定位图资源 Bmp图片ID bitmap.LoadBitmap(IDB_BITMAP1); //获取对话框上的句柄 图片控件ID ...
https://www.tsingfun.com/it/cpp/2173.html 

mfc 获取控件在对话框上的位置 - C/C++ - 清泛网 - 专注C/C++及内核技术

...框上的位置请看代码,亲测有效:CRect rect;GetDlgItem(控件ID)->GetWindowRect(&rect); 获取控件的屏幕坐标ScreenToClient(&rect); 转换为对...请看代码,亲测有效: CRect rect; GetDlgItem(控件ID)->GetWindowRect(&rect); //获取控件的屏幕坐标 ScreenToC...
https://www.tsingfun.com/it/bigdata_ai/1800.html 

C# 操作MongoDb插入、更新、查询 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...on != null) { foreach (var col in collection) { string id = MongoDataHelper.GetString(col, "_id"); } } 提示函数过期警告: warning CS0618: “MongoDB.Driver.MongoServer.Create(string)”已过时:“Use MongoClient.GetServer instead.” 解决: MongoServer s...
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PHP常用API函数用法 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... $url = "https://www.tsingfun.com/index.php?m=content&c=content&a=edit&catid=37&id=289&pc_hash=c6svGs"; $params = explode('&', $url); print_r($params); ?> 结果: Array ( [0] => https://www.tsingfun.com/index.php?m=content [1] => c=content [2] => a=edit [3] => catid=37 [4] => i...
https://www.tsingfun.com/it/tech/805.html 

WEB端测试与移动端测试的区别 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...如果涉及数据:发现问题记录的时候,尽量提供所在模块id、广告id等数据,尤其是一些特殊的、边界值等不太容易造的数据,以方便开发人员利用现有数据重现问题,节省时间。 2、测试环境设置 web端测试的时候只需要直接修...