mshtml: Implement IDispatch for IHTMLDocument4.

dlls/mshtml/htmldoc3.c

@@ -544,16 +544,14 @@ static ULONG WINAPI HTMLDocument4_Release(IHTMLDocument4 *iface)
 static HRESULT WINAPI HTMLDocument4_GetTypeInfoCount(IHTMLDocument4 *iface, UINT *pctinfo)
 {
     HTMLDocument *This = HTMLDOC4_THIS(iface);
-    FIXME("(%p)->(%p)\n", This, pctinfo);
-    return E_NOTIMPL;
+    return IDispatchEx_GetTypeInfoCount(DISPATCHEX(This), pctinfo);
 }
 
 static HRESULT WINAPI HTMLDocument4_GetTypeInfo(IHTMLDocument4 *iface, UINT iTInfo,
                                                 LCID lcid, ITypeInfo **ppTInfo)
 {
     HTMLDocument *This = HTMLDOC4_THIS(iface);
-    FIXME("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
-    return E_NOTIMPL;
+    return IDispatchEx_GetTypeInfo(DISPATCHEX(This), iTInfo, lcid, ppTInfo);
 }
 
 static HRESULT WINAPI HTMLDocument4_GetIDsOfNames(IHTMLDocument4 *iface, REFIID riid,
@@ -561,9 +559,7 @@ static HRESULT WINAPI HTMLDocument4_GetIDsOfNames(IHTMLDocument4 *iface, REFIID
                                                 LCID lcid, DISPID *rgDispId)
 {
     HTMLDocument *This = HTMLDOC4_THIS(iface);
-    FIXME("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
-                                        lcid, rgDispId);
-    return E_NOTIMPL;
+    return IDispatchEx_GetIDsOfNames(DISPATCHEX(This), riid, rgszNames, cNames, lcid, rgDispId);
 }
 
 static HRESULT WINAPI HTMLDocument4_Invoke(IHTMLDocument4 *iface, DISPID dispIdMember,
@@ -571,9 +567,8 @@ static HRESULT WINAPI HTMLDocument4_Invoke(IHTMLDocument4 *iface, DISPID dispIdM
                             VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
 {
     HTMLDocument *This = HTMLDOC4_THIS(iface);
-    FIXME("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
-            lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
-    return E_NOTIMPL;
+    return IDispatchEx_Invoke(DISPATCHEX(This), dispIdMember, riid, lcid, wFlags, pDispParams,
+            pVarResult, pExcepInfo, puArgErr);
 }
 
 static HRESULT WINAPI HTMLDocument4_focus(IHTMLDocument4 *iface)