319 	return NULL; // stub code

   319 	RemoteFunctionCallData rfcdata;

   320 	EglRFC eglApiData( rfcdata );

   321 	eglApiData.Init( EglRFC::EeglQueryString );

   322 	eglApiData.AppendEGLDisplay(aDisplay);

   323 	eglApiData.AppendEGLint(aName);

   324 	TEglThreadState* threadState = CVghwUtils::CreateThreadState();

   325 	EGLBoolean result = EGL_FALSE;

   326 	if (threadState)

   327 		{

   328 		/*

   329 		 * This command is pointless at the moment.  We actually want the host

   330 		 * to return a string, not a boolean.  The serialization interface does

   331 		 * not currently support the returning of strings from the host side,

   332 		 * so there is no way to get back the result of the query properly.

   333 		 * 

   334 		 * We should improve the guest/host interface to add this support.  Then

   335 		 * this code can be made "useful".  At the moment, returning true means

   336 		 * the host knows about the extension and wants to reply with a non-NULL

   337 		 * string. 

   338 		 */

   339 		result = threadState->ExecEglBooleanCmd(eglApiData);

   340 		if (result == EGL_FALSE)

   341 			{

   342 			return NULL;

   343 			}

   344 		}

   345 		

   346 	switch (aName)

   347 		{

   348 		case EGL_CLIENT_APIS:

   349 			return "OpenVG OpenGL_ES OpenGL_ES2";

   350 		case EGL_EXTENSIONS:

   351 			return "KHR_reusable_sync EGL_SYMBIAN_COMPOSITION";

   352 		case EGL_VENDOR:

   353 			return "Symbian Foundation";

   354 		case EGL_VERSION:

   355 			return "1.4 guestegl";

   356 		}

   357 	

   358 	return NULL;