mshtml: Added IHTMLWindow2::onerror semi-stub implementation.

dlls/mshtml/htmlevent.c

@@ -68,6 +68,9 @@ static const WCHAR ondragW[] = {'o','n','d','r','a','g',0};
 static const WCHAR dragstartW[] = {'d','r','a','g','s','t','a','r','t',0};
 static const WCHAR ondragstartW[] = {'o','n','d','r','a','g','s','t','a','r','t',0};
 
+static const WCHAR errorW[] = {'e','r','r','o','r',0};
+static const WCHAR onerrorW[] = {'o','n','e','r','r','o','r',0};
+
 static const WCHAR focusW[] = {'f','o','c','u','s',0};
 static const WCHAR onfocusW[] = {'o','n','f','o','c','u','s',0};
 
@@ -160,6 +163,8 @@ static const event_info_t event_info[] = {
         EVENT_CANCELABLE},
     {dragstartW,         ondragstartW,         EVENTT_MOUSE,  DISPID_EVMETH_ONDRAGSTART,
         EVENT_CANCELABLE},
+    {errorW,             onerrorW,             EVENTT_NONE,   DISPID_EVMETH_ONERROR,
+        0},
     {focusW,             onfocusW,             EVENTT_HTML,   DISPID_EVMETH_ONFOCUS,
         EVENT_DEFAULTLISTENER},
     {keydownW,           onkeydownW,           EVENTT_KEY,    DISPID_EVMETH_ONKEYDOWN,

dlls/mshtml/htmlevent.h

@@ -25,6 +25,7 @@ typedef enum {
     EVENTID_DBLCLICK,
     EVENTID_DRAG,
     EVENTID_DRAGSTART,
+    EVENTID_ERROR,
     EVENTID_FOCUS,
     EVENTID_KEYDOWN,
     EVENTID_KEYUP,

dlls/mshtml/htmlwindow.c

@@ -971,15 +971,19 @@ static HRESULT WINAPI HTMLWindow2_get_onhelp(IHTMLWindow2 *iface, VARIANT *p)
 static HRESULT WINAPI HTMLWindow2_put_onerror(IHTMLWindow2 *iface, VARIANT v)
 {
     HTMLWindow *This = impl_from_IHTMLWindow2(iface);
-    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
-    return E_NOTIMPL;
+
+    FIXME("(%p)->(%s) semi-stub\n", This, debugstr_variant(&v));
+
+    return set_window_event(This, EVENTID_ERROR, &v);
 }
 
 static HRESULT WINAPI HTMLWindow2_get_onerror(IHTMLWindow2 *iface, VARIANT *p)
 {
     HTMLWindow *This = impl_from_IHTMLWindow2(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+
+    TRACE("(%p)->(%p)\n", This, p);
+
+    return get_window_event(This, EVENTID_ERROR, p);
 }
 
 static HRESULT WINAPI HTMLWindow2_put_onresize(IHTMLWindow2 *iface, VARIANT v)