大约有 40,000 项符合查询结果（耗时：0.0213秒） [XML]
Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?
...nt to clear your Canvas with.
And: how can I update just a part of the screen ?
There is no such method that just update a "part of the screen" since Android OS is redrawing every pixel when updating the screen. But, when you're not clearing old drawings on your Canvas, the old drawings are st...
Redirecting Output from within Batch file
... write to two or more files. You might also want different messages on the screen. It is still possible to to do this efficiently by redirecting to undefined handles outside a parenthesized block or subroutine, and then use the & notation to reference the already opened files.
call :sub 9>Fi...
select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...很多时也很大
（3）select支持的文件描述符数量太小了，默认是1024
2 poll实现
poll的实现和select非常相似，只是描述fd集合的方式不同，poll使用pollfd结构而不是select的fd_set结构，其他的都差不多。
关于select和poll的实现分析，可...
How to run a program without an operating system?
...ually select it every time, I would hit F1 on the "Startup Interrupt Menu" screen, and then navigate to:
Boot sector
On x86, the simplest and lowest level thing you can do is to create a Master Boot Sector (MBR), which is a type of boot sector, and then install it to a disk.
Here we create one with...
vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...删除了)
--stagedir=<stagedir>
存放编译后库文件的路径，默认是stage
--build-type=complete
编译所有版本，不然只会编译一小部分版本（相当于:
variant=release,threading=multi;
link=shared|static;runtime-link=shared）
variant=debug|release
决定...
使用CSplitterWnd实现拆分窗口（多视图显示） - C/C++ - 清泛网 - 专注C/C++及内核技术
...视图，
除非从 CsplitterWnd派生一个新类并修改拆分窗口的默认操作性能，否则拆分窗口中的所有视图使用的都是相同的视图类。
静态拆分窗口是用CsplitterWnd::CreateStatic而不是CsplitterWnd::Create创建，并且由于MFC不会自动创建静态拆...
Paging UICollectionView by cells, not screen
...izontal scrolling and there are always 2 cells side-by-side per the entire screen. I need the scrolling to stop at the begining of a cell. With paging enabled, the collection view scrolls the whole page, which is 2 cells at once, and then it stops.
...
android: move a view on touch move (ACTION_MOVE)
...ts working fine but Is there any way to restrict the move from outside the screen that means should move only inside screen boundary..
– Daud Arfin
Oct 19 '13 at 4:34
2
...
第一个Hello,OS World操作系统 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...起借助Bochs的debug功能来一探究竟。
我们双击“pfos.bxrc”默认是以运行模式启动Bochs，实际上我们应该启动bochsdbg.exe，因此写个简单的批处理脚本启动它吧，如下：
@echo off
SET BXSHARE=C:\Program Files (x86)\Bochs-2.5
if %PROCESSOR_ARCHIT...
MiniDumpWriteDump 记录dmp文件的简单实例（附调试方法） - C/C++ - 清泛网...
...录一个minidump文件。
dmp调试方法：
双击dmp文件，默认以vs打开：
进行调试，如下：
这样便可还原崩溃现场，进行跟踪调试快速找出bug。MiniDumpWriteDump dmp