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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...重载OnEraseBkGnd,其中直接返回
3.用OnPaint实现,创建窗口时设置背景刷为空
4.用OnPaint实现,但是要求刷新时用Invalidate(FALSE)这样的函数（不过这种情况下,窗口覆盖等造成的刷新还是要闪一 下,所以不是彻底的解决方法）
都挺简单的...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
...错提示。
QUOTE:
Q：
smtpd认证失败：无权限连接authdaemond
Nov 20 15:58:54 bsd6 postfix/smtpd[900]: warning: SASL authentication failure: cannot connect to Courier authdaemond: Permission denied
A:
检查 authdaemond的socket所在目录及其父目录的属...
App Inventor 2 控制代码块 · App Inventor 2 中文网
...
打开另一屏幕
打开指定名称的屏幕，屏幕名可以从连接的屏幕名称下拉块中选择。
如果你确实打开了另一个屏幕，则应在返回主屏幕时将其关闭以释放系统内存。 离开屏幕时未能关闭屏幕最终会导致内存问题。
打开另...
Return type of '?:' (ternary conditional operator)
...ue and prvalue (since I hadn't heard of them before your answer) I came across this handy SO post: stackoverflow.com/questions/3601602/…
– fluffy
Dec 16 '11 at 19:04
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REDHAT 6.4 X64下ORACLE 11GR2静默安装 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...的情况修改
NETMASK=255.255.240.0
GATEWAY=192.168.0.254 #我要连接外网所以加了网关和DNS
DNS1=218.85.157.99
DNS2=58.22.96.66
修改后不要忘记了重启网络服务
service network restart
3、/etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost...
SVN 报错：Unable to create pristine install stream - 更多技术 - 清泛网 - 专注C/C++及内核技术
SVN 报错：Unable to create pristine install streamLooking at my hard disk, I saw that there's notmpfolder inside my.svnfolder.Creating thetmpfolder manually resolved the issue.解决方法：在.svn文件夾下手动新建文件夾tmp即可。Looking at my hard disk, I saw that there's no tmp fol...
ssl证书申请报错：challenge = [c for c in authorization[\'challenges\']...
ssl证书申请报错：challenge = [c for c in authorization['challenges'] if c['type'] == "http-01"][0] IndexError: list index out of rangechallenge-list-index-out-of-range使用acme-tiny申请ssl证书时报错：challenge = [c for c in authorization[& 39;challenges& 39;] if c[& 39;type& 39;] == ...
【解决】eclipse新建项目报错：overlaps the location of another project:...
【解决】eclipse新建项目报错：overlaps the location of another project: 'xxx'eclipse-error-overlaps-the-location-of-another-projectEclipse新建项目时报错：overlaps the location of another project: & 39;xxx& 39;，确保workspace下没有重复的工程，但之前曾经添加并删...
解决spawn-fcgi 报错：child exited with: xxx的方法 - 更多技术 - 清泛网 ...
解决spawn-fcgi 报错：child exited with: xxx的方法spawn-fcgi-child-exited-with出错的时候请加 -n 参数，会显示详细的错误信息：如：spawn-fcgi xxx -n出错的时候请加 -n 参数，会显示详细的错误信息：
如：spawn-fcgi xxx -nspawn fcgi
【解决】Java报错：Implicit super constructor Object() is undefined for...
【解决】Java报错：Implicit super constructor Object() is undefined for default constructor. Must define an explicit constructor1、网上的常规解决步骤：把java的类库加载进去，在工程上右键选择属性 > Java Build Path的Libraries > Add Library选择JRE System Library > ...