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<HTML><HEAD><TITLE>Xlib Programming Manual: XQueryFont</TITLE></HEAD><BODY><H1 ALIGN=center>XQueryFont</H1><H2>Syntax</H2><!.IN "XQueryFont" "" "@DEF@"><CODE><PRE><A HREF="./#XFontStruct">XFontStruct</A> *XQueryFont(<B>display</B>, <B>font_ID</B>) <A HREF="../../display/opening.html#Display">Display</A> *<B>display</B>; XID <B>font_ID</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>font_ID</B><TD> Specifies the font ID or the <B><A HREF="/toto/GContext.html">GContext</A></B>ID.</TABLE><H2>Description</H2>The<B>XQueryFont()</B>function returns a pointer to the<A HREF="./#XFontStruct">XFontStruct</A>structure, which contains information associated with the font.You can query a font or the font stored in a GC.The font ID stored in the <A HREF="./#XFontStruct">XFontStruct</A>structure will be the <B><A HREF="/toto/GContext.html">GContext</A></B> ID, and you need to be careful when using this ID in other functions(see<B><A HREF="../../GC/XGContextFromGC.html">XGContextFromGC()</A></B>).If the font does not exist,<B>XQueryFont()</B>returns NULL.To free this data, use<B><A HREF="XFreeFontInfo.html">XFreeFontInfo()</A></B>.<H2>See also</H2><B><A HREF="../../GC/XCreateGC.html">XCreateGC()</A></B>,<B><A HREF="XFreeFont.html">XFreeFont()</A></B>,<B><A HREF="XGetFontProperty.html">XGetFontProperty()</A></B>,<B><A HREF="XListFonts.html">XListFonts()</A></B>,<B><A HREF="XLoadFont.html">XLoadFont()</A></B>,<B><A HREF="XLoadQueryFont.html">XLoadQueryFont()</A></B>,<B><A HREF="XSetFontPath.html">XSetFontPath()</A></B>,<B><A HREF="XUnloadFont.html">XUnloadFont()</A></B>,"<A HREF="fonts.html">Loading and Freeing Fonts</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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