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Check orientation on Android phone
...anything, because nothing is changing, because the launcher has locked the screen orientation and doesn't allow it to change. So it is correct that .orientation doesn't change, because the orientation hasn't changed. The screen is still portrait.
– hackbod
Fe...
创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...。
这个过程同样也省略掉了with primary key关键字,它也是默认值。
create materialized view t_mv_test
refresh fast on demand
start with sysdate next sysdate+1/288 with primary key --默认值
as
select * from t_mv_test@dblink_name;
我们再分析一下物化视图的机...
App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...ice-md5=3c5c864d432cc2381b687f8d873e1429
rtype int 文件命名策略,默认0
0 为不重命名,返回冲突
1 为只要path冲突即重命名
2 为path冲突且block_list不同才重命名
3 为覆盖
4、文件上传
curl -F ‘file=@/Downloads/filename.jpg’ “https://d.pcs.baidu.c...
How to find the operating system version using JavaScript?
...wig)
*/
(function (window) {
{
var unknown = '-';
// screen
var screenSize = '';
if (screen.width) {
width = (screen.width) ? screen.width : '';
height = (screen.height) ? screen.height : '';
screenSize += '' + width + " x " +...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...
ptmalloc原理
系统调用接口
上图是 x86_64 下 Linux 进程的默认地址空间, 对 heap 的操作, 操作系统提供了brk()系统调用,设置了Heap的上边界; 对 mmap 映射区域的操作,操作系 统 供了 mmap()和 munmap()函数。
因为系统调用的代价很高...
How can I save a screenshot directly to a file in Windows? [closed]
In Windows XP, one can press Alt-PrintScreen to copy an image of the active window, or Ctrl-PrintScreen to copy an image of the full desktop.
...
How to detect user inactivity in Android
...Count down timer starts and logs out user after 5 mins
OR user turns the screen OFF.
----> Count down timer starts and logs out user after 5 mins
...
CListCtrl 如何设置单元格颜色? - C/C++ - 清泛网 - 专注C/C++及内核技术
CListCtrl 如何设置单元格颜色?CListCtrl默认可设置的内容很少,如单元格颜色默认无法设置。若想设置单元格颜色,需要对CListCtrl进行拓展,已有老外为我们写好demo,这里...CListCtrl默认可设置的内容很少,如单元格颜色默认无法...
MFC非客户区完美自绘(标题栏,边框,标题按钮)例子 - C/C++ - 清泛网 - 专...
...是很多初学者最苦恼的问题,目前网上的例子要么是系统默认的标题按钮时不时的会重现出来,要么是影响了窗口非客户区原来默认的行...
标题栏自绘是很多初学者最苦恼的问题,目前网上的例子要么是系统默认的标题按钮...
解决:CStatic控件单击STN_CLICKED消息没反应 - C/C++ - 清泛网 - 专注C/C++及内核技术
...atic控件的Notify属性(即SS_NOTIFY风格),将其改成TRUE就OK了,默认的属性为FASLE,即静态文本控件在默认情况下是不发送通告消息的...修改CStatic控件的Notify属性(即SS_NOTIFY风格),将其改成TRUE就OK了,默认的属性为FASLE,即静态文本控...