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<HTML><HEAD><TITLE>Xlib Programming Manual: MappingNotify Events</TITLE></HEAD><BODY><H1 ALIGN=center>10.10.7 MappingNotify Events</H1><!.IN "Events" "MappingNotify"><!.IN "MappingNotify" "" "@DEF@">The X server reports<B>MappingNotify</B>events to all clients.There is no mechanism to express disinterest in this event.The X server generates this event type whenever a client application successfully calls:<UL><P><LI><B><A HREF="../../input/XSetModifierMapping.html">XSetModifierMapping()</A></B>to indicate which KeyCodes are to be used as modifiers<P><LI><B><A HREF="../../input/XChangeKeyboardMapping.html">XChangeKeyboardMapping()</A></B>to change the keyboard mapping<P><LI><B><A HREF="../../input/XSetPointerMapping.html">XSetPointerMapping()</A></B>to set the pointer mapping</UL><A NAME="XMappingEvent"></A><P>The structure for this event type contains:<P><!.IN "XMappingEvent" "" "@DEF@"><PRE><CODE>typedef struct { int type; /* MappingNotify */ unsigned long serial; /* # of last request processed by server */ Bool send_event; /* true if this came from a <B><A HREF="../../appendix/a.html#SendEvent">SendEvent</A></B> request */ Display *display; /* Display the event was read from */ Window window; /* unused */ int request; /* one of MappingModifier, MappingKeyboard, MappingPointer */ int first_keycode; /* first keycode */ int count; /* defines range of change w. first_keycode*/} XMappingEvent;</PRE></CODE><P>The <B>request</B> member is set to indicate the kind of mapping change that occurredand can be<B>MappingModifier</B>,<B>MappingKeyboard</B>,<B>MappingPointer</B>.If it is<B>MappingModifier</B>,the modifier mapping was changed.If it is<B>MappingKeyboard</B>,the keyboard mapping was changed.If it is<B>MappingPointer</B>,the pointer button mapping was changed. The <B>first_keycode</B> and <B>count</B> members are set only if the <B>request</B> member was set to<B>MappingKeyboard</B> .The number in <B>first_keycode</B> represents the first number in the range of the altered mapping, and <B>count</B> represents the number of keycodes altered.<P>To update the client application's knowledge of the keyboard,you should call<B><A HREF="../../utilities/keyboard/XRefreshKeyboardMapping.html">XRefreshKeyboardMapping()</A></B>. <H5 ALIGN=right><I>Next: <A HREF="reparent.html">ReparentNotify Events</A></I></H5><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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