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<HTML><HEAD><TITLE>Xlib Programming Manual: XDisplayName</TITLE></HEAD><BODY><H1 ALIGN=center>XDisplayName</H1><H2>Syntax</H2><!.IN "XDisplayName" "" "@DEF@"><CODE><PRE>char *XDisplayName(<B>string</B>) char *<B>string</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>string</B><TD> Specifies the character string.</TABLE><H2>Description</H2>The<B>XDisplayName()</B>function returns the name of the display that <B><A HREF="../../display/opening.html">XOpenDisplay()</A></B>would attempt to use.If a NULL string is specified,<B>XDisplayName()</B>looks in the environment for the display and returns the display name that<B><A HREF="../../display/opening.html">XOpenDisplay()</A></B>would attempt to use.This makes it easier to report to the user precisely which display theprogram attempted to open when the initial connection attempt failed.<H2>See also</H2><B><A HREF="XGetErrorDatabaseText.html">XGetErrorDatabaseText()</A></B>,<B><A HREF="XGetErrorText.html">XGetErrorText()</A></B>,<B><A HREF="../../display/opening.html">XOpenDisplay()</A></B>,<B><A HREF="XSetErrorHandler.html">XSetErrorHandler()</A></B>,<B><A HREF="XSetIOErrorHandler.html">XSetIOErrorHandler()</A></B>,<B><A HREF="XSynchronize.html">XSynchronize()</A></B>,"<A HREF="default-handlers.html">Using the Default Error Handlers</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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