<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[lfnlook的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/lfnlook</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; lfnlook]]></copyright><item><title><![CDATA[string判断数据内容是否是字母+数字 ctype]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/131519830</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/131519830</guid><author>lfnlook</author><pubDate>Mon, 03 Jul 2023 17:22:16 +0800</pubDate><description><![CDATA[string::AB12345]]></description><category></category></item><item><title><![CDATA[c语言char数组去重]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/131257496</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/131257496</guid><author>lfnlook</author><pubDate>Sat, 17 Jun 2023 10:23:34 +0800</pubDate><description><![CDATA[业务需求复制,sWifi在别的地方添加数据。]]></description><category></category></item><item><title><![CDATA[Qt插入图片,QLabel随图片大小变化]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130772917</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130772917</guid><author>lfnlook</author><pubDate>Fri, 19 May 2023 19:36:34 +0800</pubDate><description><![CDATA[【代码】Qt插入图片,QLabel随图片大小变化。]]></description><category></category></item><item><title><![CDATA[Qt自定义QLabel,设置背景颜色,文字颜色,文字滚动]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130744131</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130744131</guid><author>lfnlook</author><pubDate>Thu, 18 May 2023 11:58:14 +0800</pubDate><description><![CDATA[【代码】Qt自定义QLabel,设置背景颜色,文字颜色,文字滚动。]]></description><category></category></item><item><title><![CDATA[Qt鼠标悬停在按钮上改变背景]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130733629</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130733629</guid><author>lfnlook</author><pubDate>Wed, 17 May 2023 19:54:48 +0800</pubDate><description><![CDATA[【代码】Qt鼠标悬停在按钮上改变背景。]]></description><category></category></item><item><title><![CDATA[Qt按钮设置背景图]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130732977</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130732977</guid><author>lfnlook</author><pubDate>Wed, 17 May 2023 19:15:17 +0800</pubDate><description><![CDATA[name 按钮objectName。]]></description><category></category></item><item><title><![CDATA[Qt鼠标单击与长按]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130720314</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130720314</guid><author>lfnlook</author><pubDate>Wed, 17 May 2023 10:33:31 +0800</pubDate><description><![CDATA[在Qt中，可以通过重载QWidget的mousePressEvent()、mouseReleaseEvent()和mouseMoveEvent()等事件来实现对鼠标事件的处理。判断鼠标是长按还是点击，可以通过记录鼠标按下的时间和释放的时间，通过两个事件的时间差来判断。以下是一个实现鼠标长按判断的示例代码。我们通过记录鼠标按下的时间m_pressTime，然后在鼠标释放的事件中计算时间差elapsed，如果时间差超过1秒，则判断为长按，否则判断为点击。]]></description><category></category></item><item><title><![CDATA[孤儿,僵尸,守护线程]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130507604</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130507604</guid><author>lfnlook</author><pubDate>Fri, 05 May 2023 15:35:39 +0800</pubDate><description><![CDATA[僵尸进程不占用任何内存空间,仅在进程列表中保留一个位置，记载该进程的退出状态等信息供其他进程收集,等待父进程进行回收,或者父进程结束那就。父进程退出后,子进程还在继续运行,那么这些正在运行的子进程就是孤儿进程。去获取子进程的状态信息,那么子进程会继续留在系统中,这就称为僵尸进程。1.调用 fork(),创建新进程,它会是将来的守护进程.2.在父进程中调用 exit,保证子进程不是进程组长。来创建一个子进程,如果子进程退出了,父进程没有调用。进程相当于爷爷进程,是最原始的进程。用以下代码即可(借鉴别人代码)]]></description><category></category></item><item><title><![CDATA[配置log4cpp报错:对‘pthread_key_create’未定义的引用]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130477679</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130477679</guid><author>lfnlook</author><pubDate>Wed, 03 May 2023 21:43:46 +0800</pubDate><description><![CDATA[【代码】配置log4cpp报错:对‘pthread_key_create’未定义的引用。]]></description><category></category></item><item><title><![CDATA[socket通信]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/130083075</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/130083075</guid><author>lfnlook</author><pubDate>Tue, 11 Apr 2023 14:48:46 +0800</pubDate><description><![CDATA[socket通信]]></description><category></category></item><item><title><![CDATA[VS2019连接Linux]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129909903</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129909903</guid><author>lfnlook</author><pubDate>Sun, 02 Apr 2023 15:02:31 +0800</pubDate><description><![CDATA[VS2019连接Linux]]></description><category></category></item><item><title><![CDATA[ubuntu安装Samba服务器]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129909640</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129909640</guid><author>lfnlook</author><pubDate>Sun, 02 Apr 2023 13:14:37 +0800</pubDate><description><![CDATA[ubuntu安装Samba服务器]]></description><category></category></item><item><title><![CDATA[Linux简单入门命令]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129881735</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129881735</guid><author>lfnlook</author><pubDate>Sat, 01 Apr 2023 16:53:08 +0800</pubDate><description><![CDATA[Linux简单命令]]></description><category></category></item><item><title><![CDATA[Qt多语言翻译(简单示例)]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129816320</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129816320</guid><author>lfnlook</author><pubDate>Tue, 28 Mar 2023 15:14:49 +0800</pubDate><description><![CDATA[Qt多语言翻译简单示例]]></description><category></category></item><item><title><![CDATA[Qt--Tcp]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129797291</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129797291</guid><author>lfnlook</author><pubDate>Mon, 27 Mar 2023 16:02:42 +0800</pubDate><description><![CDATA[tcp通讯小demo]]></description><category></category></item><item><title><![CDATA[Qt--udp]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129794740</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129794740</guid><author>lfnlook</author><pubDate>Mon, 27 Mar 2023 14:32:07 +0800</pubDate><description><![CDATA[dup广播简单通讯]]></description><category></category></item><item><title><![CDATA[QString、QLatin1String、QStringLiteral]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129554713</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129554713</guid><author>lfnlook</author><pubDate>Wed, 15 Mar 2023 14:37:32 +0800</pubDate><description><![CDATA[①参数能使用 const char*类型或 QLatin1String 类型的地方使用相应的参数。②参数需要 QString 参数类型的地方，若值不修改，则使用 QStringLiteral 宏③参数需要 QString 类型且 QString 可能被修改，则直接使用 QString 或隐式转换。]]></description><category></category></item><item><title><![CDATA[Qt图形绘制QPainter]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129553331</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129553331</guid><author>lfnlook</author><pubDate>Wed, 15 Mar 2023 14:01:40 +0800</pubDate><description><![CDATA[图形绘制]]></description><category></category></item><item><title><![CDATA[Qt部件透明及阴影效果]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129464947</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129464947</guid><author>lfnlook</author><pubDate>Sat, 11 Mar 2023 16:14:47 +0800</pubDate><description><![CDATA[窗体透明,半透明,部件透明或阴影]]></description><category></category></item><item><title><![CDATA[Qt样式表]]></title><link>https://blog.youkuaiyun.com/lfnlook/article/details/129464023</link><guid>https://blog.youkuaiyun.com/lfnlook/article/details/129464023</guid><author>lfnlook</author><pubDate>Sat, 11 Mar 2023 15:54:12 +0800</pubDate><description><![CDATA[Qt样式表介绍]]></description><category></category></item></channel></rss>