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<HTML><HEAD><TITLE>Xlib Programming Manual: XrmEnumerateDatabase</TITLE></HEAD><BODY><H1 ALIGN=center>XrmEnumerateDatabase</H1><H2>Syntax</H2><!.IN "XrmEnumerateDatabase" "" "@DEF@"><PRE><CODE>#define <B>XrmEnumAllLevels</B> 0#define <B>XrmEnumOneLevel</B> 1Bool XrmEnumerateDatabase(<B>database</B>, <B>name_prefix</B>, <B>class_prefix</B>, <B>mode</B>, <B>proc</B>, <B>arg</B>) <B><A HREF="creating-and-storing-databases.html">XrmDatabase</A></B> <B>database</B>; <B><A HREF="quarks.html#XrmNameList">XrmNameList</A></B> <B>name_prefix</B>; <B><A HREF="quarks.html#XrmClassList">XrmClassList</A></B> <B>class_prefix</B>; int <B>mode</B>; Bool (*<B>proc</B>)(); XPointer <B>arg</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>database</B><TD> Specifies the resource database.<TR><TD> <B>name_prefix</B><TD> Specifies the resource name prefix.<TR><TD> <B>class_prefix</B><TD> Specifies the resource class prefix.<TR><TD> <B>mode</B><TD> Specifies the number of levels to enumerate.<TR><TD> <B>proc</B><TD> Specifies the procedure that is to be called for each matching entry.<TR><TD> <B>arg</B><TD> Specifies the user-supplied argument that will be passed to the procedure.</TABLE><H2>Description</H2>The<B>XrmEnumerateDatabase()</B>function calls the specified procedure for each resource in the databasethat would match some completion of the given name/class resource prefix.The order in which resources are found is implementation dependent.If mode is<B>XrmEnumOneLevel</B>,a resource must match the given name/class prefix withjust a single name and class appended. If mode is<B>XrmEnumAllLevels</B>,the resource must match the given name/class prefix with one or more names andclasses appended.If the procedure returns<B>True</B>,the enumeration terminates and the function returns<B>True</B>. If the procedure always returns<B>False</B>,all matching resources are enumerated and the function returns<B>False</B>.<P>The procedure is called with the following arguments:<P><PRE><CODE>(*<I>proc</I>)(<I>database</I>, <I>bindings</I>, <I>quarks</I>, <I>type</I>, <I>value</I>, <I>arg</I>) <B><A HREF="creating-and-storing-databases.html">XrmDatabase</A></B> *<I>database</I>; <A HREF="quarks.html#XrmBindingList">XrmBindingList</A> <I>bindings</I>; <B><A HREF="quarks.html#XrmQuark">XrmQuarkList</A></B> <I>quarks</I>; <B><A HREF="quarks.html#XrmQuark">XrmRepresentation</A></B> *<I>type</I>; <B><A HREF="creating-and-storing-databases.html">XrmValue</A></B> *<I>value</I>; XPointer <I>closure</I>;</PRE></CODE><P>The bindings and quarks lists are terminated by<B>NULLQUARK</B>.Note that pointersto the database and type are passed, but these values should not be modified.<P>The procedure must not modifiy the database.If Xlib has been initialized for threads, the procedure is called withthe database locked and the result of a call by the procedure to anyXlib function using the same database is not defined.<H2>See also</H2><B><A HREF="XrmGetResource.html">XrmGetResource()</A></B>,<B><A HREF="XrmInitialize.html">XrmInitialize()</A></B>,<B><A HREF="XrmPutResource.html">XrmPutResource()</A></B>,"<A HREF="enumerating-entries.html">Enumerating Database Entries</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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