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 <title><![CDATA[Qt中调用ioctl失败]]></title>
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 <description><![CDATA[Latest 20 replies of Qt中调用ioctl失败]]></description>
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 <description><![CDATA[[quote]设备节点打开正常，但一到::ioctl()就错误了，返回的值为-1,可在test.c中是调用正确的啊？[/quote]
把errno打出来看看具体的错误代码。]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=20959#186433]]></link>
 <author><![CDATA[kasim]]></author>
 <category><![CDATA[Linux技术交流区]]></category>
 <pubdate><![CDATA[Thu, 19 Jul 2012 02:54:44 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[你关闭了close(fd_dirc);
&nbsp;&nbsp;&nbsp;&nbsp;close(fd_pwm);]]></description>
 <link><![CDATA[http://121.40.142.80/read.php?tid=20959#186391]]></link>
 <author><![CDATA[envi]]></author>
 <category><![CDATA[Linux技术交流区]]></category>
 <pubdate><![CDATA[Thu, 19 Jul 2012 00:55:47 +0000]]></pubdate>
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