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<HTML><HEAD><TITLE>Xlib Programming Manual: XQueryKeymap</TITLE></HEAD><BODY><H1 ALIGN=center>XQueryKeymap</H1><H2>Syntax</H2><!.IN "XQueryKeymap" "" "@DEF@"><CODE><PRE>XQueryKeymap(<B>display</B>, <B>keys_return</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; char <B>keys_return</B>[32];</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>keys_return</B><TD> Returns an array of bytes that identifies which keys are pressed down.Each bit represents one key of the keyboard.</TABLE><H2>Description</H2>The<B>XQueryKeymap()</B>function returns a bit vector for the logical state of the keyboard, where each bit set to 1 indicates that the corresponding key is currently pressed down.The vector is represented as 32 bytes.Byte N (from 0) contains the bits for keys 8N to 8N + 7 with the least-significant bit in the byte representing key 8N.<P>Note that the logical state of a device (as seen by client applications)may lag the physical state if device event processing is frozen.<H2>See also</H2><B><A HREF="XAutoRepeatOff.html">XAutoRepeatOff()</A></B>,<B><A HREF="XAutoRepeatOn.html">XAutoRepeatOn()</A></B>,<B><A HREF="XBell.html">XBell()</A></B>,<B><A HREF="XChangeKeyboardControl.html">XChangeKeyboardControl()</A></B>,<B><A HREF="XChangeKeyboardMapping.html">XChangeKeyboardMapping()</A></B>,<B><A HREF="XGetKeyboardControl.html">XGetKeyboardControl()</A></B>,<B><A HREF="XSetPointerMapping.html">XSetPointerMapping()</A></B>,"<A HREF="keyboard-and-pointer-settings.html">Keyboard and Pointer Settings</A>".<HR><ADDRESS><A HREF="http://tronche.com/">Christophe Tronche</A>, <A HREF="mailto:ch.tronche@computer.org">ch.tronche@computer.org</A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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