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<HTML><HEAD><TITLE>Xlib Programming Manual: XGetErrorDatabaseText</TITLE></HEAD><BODY><H1 ALIGN=center>XGetErrorDatabaseText</H1><H2>Syntax</H2><!.IN "XGetErrorDatabaseText" "" "@DEF@"><CODE><PRE>XGetErrorDatabaseText(<B>display</B>, <B>name</B>, <B>message</B>, <B>default_string</B>, <B>buffer_return</B>, <B>length</B>) <A HREF="../../display/opening.html#Display">Display</A> *<B>display</B>; char *<B>name</B>, *<B>message</B>; char *<B>default_string</B>; char *<B>buffer_return</B>; int <B>length</B>;</PRE></CODE><H2>Arguments</H2><TABLE><TR><TD> <B>display</B><TD> Specifies the connection to the X server.<TR><TD> <B>name</B><TD> Specifies the name of the application.<TR><TD> <B>message</B><TD> Specifies the type of the error message.<TR><TD> <B>default_string</B><TD> Specifies the default error message if none is found in the database.<TR><TD> <B>buffer_return</B><TD> Returns the error description.<TR><TD> <B>length</B><TD> Specifies the size of the buffer.</TABLE><H2>Description</H2>The<B>XGetErrorDatabaseText()</B>function returns a null-terminated message(or the default message) from the error messagedatabase.Xlib uses this function internally to look up its error messages.The text in the default_string argument is assumedto be in the encoding of the current locale,and the text stored in the buffer_return argumentis in the encoding of the current locale.<P>The <B>name</B> argument should generally be the name of your application.The <B>message</B> argument should indicate which type of error message you want.If the name and message are not in the Host Portable Character Encoding,the result is implementation dependent.Xlib uses three predefined ``application names'' to report errors.In these names,uppercase and lowercase matter.<TABLE><TR><TD VALIGN=top>XProtoError<TD>The protocol error number is used as a string for the message argument.<TR><TD VALIGN=top>XlibMessage<TD>These are the message strings that are used internally by the library.<TR><TD VALIGN=top>XRequest<TD>For a core protocol request,the major request protocol number is used for the message argument.For an extension request,the extension name (as given by<B><A HREF="InitExtension.html">InitExtension()</A></B>)followed by a period (.) and the minor request protocol number is used for the message argument.If no string is found in the error database,the default_string is returned to the buffer argument.</TABLE><H2>See also</H2><B><A HREF="XDisplayName.html">XDisplayName()</A></B>,<B><A HREF="XGetErrorText.html">XGetErrorText()</A></B>,<B><A HREF="../../display/opening.html">XOpenDisplay()</A></B>,<B><A HREF="XSetErrorHandler.html">XSetErrorHandler()</A></B>,<B><A HREF="XSetIOErrorHandler.html">XSetIOErrorHandler()</A></B>,<B><A HREF="XSynchronize.html">XSynchronize()</A></B>,"<A HREF="default-handlers.html">Using the Default Error Handlers</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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