?? idirectfbeventbuffer_createfiledescriptor.html
字號:
<HTML><STYLE> <!-- A{textdecoration:none} --></STYLE><STYLE type="text/css"> A:link, A:visited, A:active { text-decoration: none; }</STYLE><HEAD> <TITLE>IDirectFBEventBuffer - CreateFileDescriptor [DirectFB Reference Manual]</TITLE></HEAD><BODY bgcolor=#FFFFFF link=#0070FF vlink=#0070FF text=#404040><TABLE width=100% bgcolor=black border=0 cellspacing=1 cellpadding=3> <TR><TD width=30%> <A href="http://www.directfb.org"><IMG border=0 src="directfb.png"></A> </TD><TD align=right> <A href="index.html"><FONT size=+3 color=white>Reference Manual - 0.9.25</FONT></A> </TD></TR> <TR><TD colspan=2 align=center bgcolor=#303030> <TABLE border=0 cellspacing=0 cellpadding=0> <TR><TD nowrap align=right width=50%> <BIG><A href="IDirectFBEventBuffer.html"><FONT color=#DDDDDD>IDirectFBEventBuffer</FONT></A> </BIG> </TD><TD nowrap align=left width=50%> <BIG><FONT color=orange> CreateFileDescriptor</FONT></BIG> </TD></TR> </TABLE> </TD></TR></TABLE><P> Create a file descriptor for reading events.</P><P> <TABLE border=0 cellspacing=0 cellpadding=2 bgcolor=#C0C0C0> <TR><TD colspan=5><I><FONT color=black>CreateFileDescriptor (</FONT></I></TD></TR> <TR><TD width=50> </TD><TD valign=top> <A href="IDirectFBEventBuffer.html">IDirectFBEventBuffer</A> </TD><TD width=20> </TD><TD align=right> <FONT color=black><B>*</B></FONT> </TD><TD valign=top> <FONT color=black><B>thiz,</B></FONT> </TD></TR> <TR><TD width=50> </TD><TD valign=top> int </TD><TD width=20> </TD><TD align=right> <FONT color=black><B>*</B></FONT> </TD><TD valign=top> <FONT color=black><B>ret_fd</B></FONT> </TD></TR> <TR><TD colspan=3><I><FONT color=black>);</FONT></I></TD></TR> </TABLE></P><P> This method provides an alternative for reading events from an event buffer. It creates a file descriptor which can be used in select(), poll() or read(). </P><P> In general only non-threaded applications which already use select() or poll() need it. </P><P> <b>Note:</b> This method flushes the event buffer. After calling this method all other methods except <a href="IDirectFBEventBuffer_PostEvent.html">IDirectFBEventBuffer::PostEvent()</a> will return DFB_UNSUPPORTED. Calling this method again will return DFB_BUSY.</P></BODY></HTML>?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -