📄 xbell.html
字号:
<HTML><HEAD><TITLE>Xlib Programming Manual: XBell</TITLE></HEAD><BODY><H1 ALIGN=center>XBell</H1><H2>Syntax</H2><!.IN "XBell" "" "@DEF@"><CODE><PRE>XBell(<B>display</B>, <B>percent</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; int <B>percent</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>percent</B><TD> Specifies the volume for the bell,which can range from \-100 to 100 inclusive. </TABLE><H2>Description</H2>The<B>XBell()</B>function rings the bell on the keyboard on the specified display, if possible.The specified volume is relative to the base volume for the keyboard.If the value for the percent argument is not in the range \-100 to 100inclusive, a<B>BadValue</B>error results.The volume at which the bell ringswhen the percent argument is nonnegative is:<BLOCKQUOTE><I>base - [(base * percent) / 100] + percent</I></BLOCKQUOTE><P>The volume at which the bell ringswhen the percent argument is negative is:<BLOCKQUOTE><I>base + [(base * percent) / 100]</I></BLOCKQUOTE><P>To change the base volume of the bell, use<B><A HREF="XChangeKeyboardControl.html">XChangeKeyboardControl()</A></B>.<P><B>XBell()</B>can generate a<B>BadValue</B> error.<H2>Diagnostics</H2><TABLE><TR><TD><B>BadValue</B><TD> Some numeric value falls outside the range of values accepted by the request. Unless a specific range is specified for an argument, the full range defined by the argument's type is accepted. Any argument defined as a set of alternatives can generate this error.</TABLE><H2>See also</H2><B><A HREF="XAutoRepeatOff.html">XAutoRepeatOff()</A></B>,<B><A HREF="XAutoRepeatOn.html">XAutoRepeatOn()</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="XQueryKeymap.html">XQueryKeymap()</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
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -