<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <HEAD> <TITLE>EXPORT_SPEC int UpnpSendActionAsync</TITLE> <META NAME="GENERATOR" CONTENT="DOC++ 3.4.10"> </HEAD> <BODY BGCOLOR="#ffffff"> <H2>EXPORT_SPEC int <A HREF="#DOC.DOCU">UpnpSendActionAsync</A></H2><H2>( IN <!1><A HREF="UpnpClient_Handle.html">UpnpClient_Handle</A> Hnd,<BR> IN const char* ActionURL,<BR> IN const char* <!1><A HREF="Upnp_Discovery.html#DOC.1.4.2.11.5">ServiceType</A>,<BR> IN const char* <!1><A HREF="Upnp_State_Var_Request.html#DOC.1.4.2.8.4">DevUDN</A>,<BR> IN IXML_Document* Action,<BR> IN Upnp_FunPtr Fun,<BR> IN const void* Cookie )</H2><BLOCKQUOTE><B>UpnpSendActionAsync</B> sends a message to change a state variable in a service, generating a callback when the operation is complete.</BLOCKQUOTE> <A NAME="DOC.DOCU"></A> <HR> <H2>Documentation</H2> <BLOCKQUOTE><B>UpnpSendActionAsync</B> sends a message to change a state variable in a service, generating a callback when the operation is complete. See <B>UpnpSendAction</B> for comments on positive return values. These positive return values are sent in the event struct associated with the <TT>UPNP_CONTROL_ACTION_COMPLETE</TT> event. <P></BLOCKQUOTE> <DL><DT><DT><B>Parameters:</B><DD><B>Hnd</B> - The handle of the control point sending the action. <BR><B>ActionURL</B> - The action URL of the service. <BR><B></B> - <!1><A HREF="Upnp_Discovery.html#DOC.1.4.2.11.5">ServiceType</A> The type of the service. <BR><B></B> - <!1><A HREF="Upnp_State_Var_Request.html#DOC.1.4.2.8.4">DevUDN</A> This parameter is ignored and must be <TT>NULL</TT>. <BR><B>Action</B> - The DOM document for the action to perform on this device. <BR><B>Fun</B> - Pointer to a callback function to be invoked when the operation completes. <BR><B>Cookie</B> - Pointer to user data that to be passed to the callback 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>: <B>ActionUrl</B> is an invalid URL. <LI> <TT>UPNP_E_INVALID_DEVICE</TT>: <B>DevUDN</B> is an invalid device. <LI> <TT>UPNP_E_INVALID_PARAM</TT>: Either <B>Fun</B> is not a valid callback function or <B>ServiceType</B>, <B>Act</B>, or <B>ActionUrl</B> is <TT>NULL</TT>. <LI> <TT>UPNP_E_INVALID_ACTION</TT>: This action is not valid. <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>