📄 xgetkeyboardmapping.html
字号:
<HTML><HEAD><TITLE>Xlib Programming Manual: XGetKeyboardMapping</TITLE></HEAD><BODY><H1 ALIGN=center>XGetKeyboardMapping</H1><H2>Syntax</H2><!.IN "XGetKeyboardMapping" "" "@DEF@"><CODE><PRE>KeySym *XGetKeyboardMapping(<B>display</B>, <B>first_keycode</B>, <B>keycode_count</B>, <B>keysyms_per_keycode_return</B>) <A HREF="../display/opening.html#Display">Display</A> *<B>display</B>; KeyCode <B>first_keycode</B>; int <B>keycode_count</B>; int *<B>keysyms_per_keycode_return</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>first_keycode</B><TD> Specifies the first KeyCode that is to be returned.<TR><TD> <B>keycode_count</B><TD> Specifies the number of KeyCodes that are to be returned.<TR><TD> <B>keysyms_per_keycode_return</B><TD> Returns the number of KeySyms per KeyCode.</TABLE><H2>Description</H2>The<B>XGetKeyboardMapping()</B>function returns the symbols for the specified number of KeyCodesstarting with first_keycode.The value specified in first_keycode must be greater than or equal to min_keycode as returned by<B><A HREF="XDisplayKeycodes.html">XDisplayKeycodes()</A></B>,or a<B>BadValue</B>error results.In addition, the following expression must be less than or equal to max_keycode as returned by<B><A HREF="XDisplayKeycodes.html">XDisplayKeycodes()</A></B>:<P><BLOCKQUOTE><I>first_keycode + keycode_count - 1</I></BLOCKQUOTE><P>If this is not the case, a <B>BadValue</B>error results. The number of elements in the KeySyms list is:<P><BLOCKQUOTE><I>keycode_count * keysyms_per_keycode_return</I></BLOCKQUOTE><P>KeySym number N, counting from zero, for KeyCode K has the following indexin the list, counting from zero: <BLOCKQUOTE><I>(K - first_code) * keysyms_per_code_return + N</I></BLOCKQUOTE><P>The X server arbitrarily chooses the keysyms_per_keycode_return value to be large enough to report all requested symbols. A special KeySym value of <B>NoSymbol</B> is used to fill in unused elements forindividual KeyCodes.To free the storage returned by <B>XGetKeyboardMapping()</B>,use<B><A HREF="../display/XFree.html">XFree()</A></B>.<P><B>XGetKeyboardMapping()</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="XChangeKeyboardMapping.html">XChangeKeyboardMapping()</A></B>,<B><A HREF="XDeleteModifiermapEntry.html">XDeleteModifiermapEntry()</A></B>,<B><A HREF="XDisplayKeycodes.html">XDisplayKeycodes()</A></B>,<B><A HREF="../display/XFree.html">XFree()</A></B>,<B><A HREF="XFreeModifiermap.html">XFreeModifiermap()</A></B>,<B><A HREF="XGetModifierMapping.html">XGetModifierMapping()</A></B>,<B><A HREF="XInsertModifiermapEntry.html">XInsertModifiermapEntry()</A></B>,<B><A HREF="XNewModifiermap.html">XNewModifiermap()</A></B>,<B><A HREF="XSetModifierMapping.html">XSetModifierMapping()</A></B>,<B><A HREF="XSetPointerMapping.html">XSetPointerMapping()</A></B>,"<A HREF="keyboard-encoding.html">Keyboard Encoding</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 + -