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<HTML><HEAD><TITLE>Xlib Programming Manual: KeySym Classification Macros</TITLE></HEAD><BODY><H1 ALIGN=center>16.1.1 KeySym Classification Macros</H1>You may want to test if a KeySym is, for example, on the keypad or on one of the function keys.You can use KeySym macros to perform the following tests.<A NAME="IsCursorKey"></A><P><CODE><PRE>IsCursorKey(<B>keysym</B>)</PRE></CODE><B>keysym</B> Specifies the KeySym that is to be tested.<BR><!.IN "IsCursorKey" "" "@DEF@">Returns<B>True</B>if the specified KeySym is a cursor key.<A NAME="IsFunctionKey"></A><P><CODE><PRE>IsFunctionKey(<B>keysym</B>)</PRE></CODE><B>keysym</B>Specifies the KeySym that is to be tested.<BR><!.IN "IsFunctionKey" "" "@DEF@">Returns <B>True</B>if the specified KeySym is a function key.<A NAME="IsKeypadKey"></A><P><CODE><PRE>IsKeypadKey(<B>keysym</B>)</PRE></CODE><B>keysym</B>Specifies the KeySym that is to be tested.<BR><!.IN "IsKeypadKey" "" "@DEF@">Returns<B>True</B>if the specified KeySym is a standard keypad key.<!.IN "IsPrivateKeypadKey" "" "@DEF@"><A NAME="IsPrivateKeypadKey"></A><P><CODE><PRE>IsPrivateKeypadKey(<B>keysym</B>)</PRE></CODE><B>keysym</B>Specifies the KeySym that is to be tested.<BR>Returns<B>True</B>if the specified KeySym is a vendor-private keypad key.<A NAME="IsMiscFunctionKey"></A><!.IN "IsMiscFunctionKey" "" "@DEF@"><P><CODE><PRE>IsMiscFunctionKey(<B>keysym</B>)</PRE></CODE><B>keysym</B>Specifies the KeySym that is to be tested.<BR>Returns <B>True</B>if the specified KeySym is a miscellaneous function key.<!.IN "IsModifierKey" "" "@DEF@"><P><CODE><PRE>IsModifierKey(<B>keysym</B>)</PRE></CODE><B>keysym</B>Specifies the KeySym that is to be tested.<BR><A NAME="IsModifierKey"></A>Returns <B>True</B>if the specified KeySym is a modifier key.<A NAME="IsPFKey"></A><P><CODE><PRE>IsPFKey(<B>keysym</B>)</PRE></CODE><B>keysym</B>Specifies the KeySym that is to be tested.<BR><!.IN "IsPFKey" "" "@DEF@">Returns <B>True</B>if the specified KeySym is a PF key.<H5 ALIGN=right><I>Next: <A HREF="../latin-keyboard.html">Latin-1 Keyboard Event Functions</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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