<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE>EXPORT_SPEC int UpnpGetServiceVarStatusAsync</TITLE> <META NAME="GENERATOR" CONTENT="DOC++ 3.4.10"> </HEAD> <BODY BGCOLOR="#ffffff"> <H2>EXPORT_SPEC int <A HREF="#DOC.DOCU">UpnpGetServiceVarStatusAsync</A></H2><H2>( IN <!1><A HREF="UpnpClient_Handle.html">UpnpClient_Handle</A> Hnd,<BR> IN const char* ActionURL,<BR> IN const char* VarName,<BR> IN Upnp_FunPtr Fun,<BR> IN const void* Cookie )</H2><BLOCKQUOTE><B>UpnpGetServiceVarStatusAsync</B> queries the state of a variable of a service, generating a callback when the operation is complete.</BLOCKQUOTE> <A NAME="DOC.DOCU"></A> <HR> <H2>Documentation</H2> <BLOCKQUOTE><B>UpnpGetServiceVarStatusAsync</B> queries the state of a variable of a service, generating a callback when the operation is complete. <B>Note that the use of this function is deprecated by the UPnP Forum</B>. <P></BLOCKQUOTE> <DL><DT><DT><B>Parameters:</B><DD><B>Hnd</B> - The handle of the control point. <BR><B>ActionURL</B> - The URL of the service. <BR><B>VarName</B> - The name of the variable to query. <BR><B>Fun</B> - Pointer to a callback function to be invoked when the operation is complete. <BR><B>Cookie</B> - Pointer to user data to pass to the callback function when invoked. <BR><DT><B>Returns:</B><DD> [int] An integer representing one of the following: <UL> <LI> <TT>UPNP_E_SUCCESS</TT>: The operation completed successfully. <LI> <TT>UPNP_E_INVALID_HANDLE</TT>: The handle is not a valid control point handle. <LI> <TT>UPNP_E_INVALID_URL</TT>: The <B>ActionUrl</B> is not a valid URL. <LI> <TT>UPNP_E_INVALID_PARAM</TT>: <B>VarName</B>, <B>Fun</B> or <B>ActionUrl</B> is not a valid pointer. <LI> <TT>UPNP_E_OUTOF_MEMORY</TT>: Insufficient resources exist to complete this operation. </UL> <BR><DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I></P><HR> <BR> This page was generated with the help of <A HREF="http://docpp.sourceforge.net">DOC++</A>. </BODY> </HTML>
