]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/ole/activex.cpp
Ensure there is valid context for DrawRectangle
[wxWidgets.git] / src / msw / ole / activex.cpp
index c8383a509cdcf319aeb1e661e4ca04a9d0c34e29..8baad0bf012bcab308717ca737bbd20810d29271 100644 (file)
 #include "wx/msw/dc.h"
 
 #include "wx/msw/ole/activex.h"
+#include "wx/msw/private.h" // for wxCopyRectToRECT
+
 // autointerfaces that we only use here
-WX_DECLARE_AUTOOLE(wxAutoIOleInPlaceSite, IOleInPlaceSite)
-WX_DECLARE_AUTOOLE(wxAutoIOleDocument, IOleDocument)
-WX_DECLARE_AUTOOLE(wxAutoIPersistStreamInit, IPersistStreamInit)
-WX_DECLARE_AUTOOLE(wxAutoIAdviseSink, IAdviseSink)
-WX_DECLARE_AUTOOLE(wxAutoIProvideClassInfo, IProvideClassInfo)
-WX_DECLARE_AUTOOLE(wxAutoITypeInfo, ITypeInfo)
-WX_DECLARE_AUTOOLE(wxAutoIConnectionPoint, IConnectionPoint)
-WX_DECLARE_AUTOOLE(wxAutoIConnectionPointContainer, IConnectionPointContainer)
+typedef wxAutoOleInterface<IOleInPlaceSite> wxAutoIOleInPlaceSite;
+typedef wxAutoOleInterface<IOleDocument> wxAutoIOleDocument;
+typedef wxAutoOleInterface<IPersistStreamInit> wxAutoIPersistStreamInit;
+typedef wxAutoOleInterface<IAdviseSink> wxAutoIAdviseSink;
+typedef wxAutoOleInterface<IProvideClassInfo> wxAutoIProvideClassInfo;
+typedef wxAutoOleInterface<ITypeInfo> wxAutoITypeInfo;
+typedef wxAutoOleInterface<IConnectionPoint> wxAutoIConnectionPoint;
+typedef wxAutoOleInterface<IConnectionPointContainer> wxAutoIConnectionPointContainer;
 
-wxDEFINE_EVENT( wxEVT_ACTIVEX, wxActiveXEvent )
+wxDEFINE_EVENT( wxEVT_ACTIVEX, wxActiveXEvent );
 
 // Ole class helpers (sort of MFC-like) from wxActiveX
 #define DECLARE_OLE_UNKNOWN(cls)\
@@ -52,7 +54,7 @@ wxDEFINE_EVENT( wxEVT_ACTIVEX, wxActiveXEvent )
     {\
         public:\
         LONG l;\
-        TAutoInitInt() : l(0) {}\
+        TAutoInitInt() : l(1) {}\
     };\
     TAutoInitInt refCount, lockCount;\
     static void _GetInterface(cls *self, REFIID iid, void **_interface, const char *&desc);\
@@ -352,7 +354,7 @@ public:
     HRESULT STDMETHODCALLTYPE TranslateAccelerator(LPMSG lpmsg, WORD)
     {
         // TODO: send an event with this id
-        if (m_window->m_oleInPlaceActiveObject.Ok())
+        if (m_window->m_oleInPlaceActiveObject.IsOk())
             m_window->m_oleInPlaceActiveObject->TranslateAccelerator(lpmsg);
         return S_FALSE;
     }
@@ -423,7 +425,7 @@ public:
     HRESULT STDMETHODCALLTYPE DeactivateAndUndo(){return S_OK; }
     HRESULT STDMETHODCALLTYPE OnPosRectChange(LPCRECT lprcPosRect)
     {
-        if (m_window->m_oleInPlaceObject.Ok() && lprcPosRect)
+        if (m_window->m_oleInPlaceObject.IsOk() && lprcPosRect)
         {
            //
            // Result of several hours and days of bug hunting -
@@ -604,7 +606,7 @@ public:
     {
         wxAutoIOleInPlaceSite inPlaceSite(
             IID_IOleInPlaceSite, (IDispatch *) this);
-        if (!inPlaceSite.Ok())
+        if (!inPlaceSite.IsOk())
             return E_FAIL;
 
         if (pViewToActivate)
@@ -616,7 +618,7 @@ public:
         {
             wxAutoIOleDocument oleDoc(
                 IID_IOleDocument, m_window->m_oleObject);
-            if (! oleDoc.Ok())
+            if (! oleDoc.IsOk())
                 return E_FAIL;
 
             HRESULT hr = oleDoc->CreateView(inPlaceSite, NULL,
@@ -631,6 +633,10 @@ public:
         return S_OK;
     }
 
+    friend bool QueryClientSiteInterface(FrameSite *self, REFIID iid, void **_interface, const char *&desc)
+    {
+        return self->m_window->QueryClientSiteInterface(iid,_interface,desc);
+    }
 
 protected:
     wxActiveXContainer * m_window;
@@ -668,6 +674,7 @@ DEFINE_OLE_TABLE(FrameSite)
     OLE_IINTERFACE(IOleDocumentSite)
     OLE_IINTERFACE(IAdviseSink)
     OLE_IINTERFACE(IOleControlSite)
+    OLE_INTERFACE_CUSTOM(QueryClientSiteInterface)
 END_OLE_TABLE
 
 
@@ -692,6 +699,13 @@ private:
     friend bool wxActiveXEventsInterface(wxActiveXEvents *self, REFIID iid, void **_interface, const char *&desc);
 
 public:
+
+    // a pointer to this static variable is used as an 'invalid_entry_marker'
+    // wxVariants containing a void* to this variables are 'empty' in the sense
+    // that the actual ActiveX OLE parameter has not been converted and inserted
+    // into m_params.
+    static wxVariant ms_invalidEntryMarker;
+
     wxActiveXEvents(wxActiveXContainer *ax) : m_activeX(ax), m_haveCustomId(false) {}
     wxActiveXEvents(wxActiveXContainer *ax, REFIID iid) : m_activeX(ax), m_customId(iid), m_haveCustomId(true) {}
     virtual ~wxActiveXEvents()
@@ -715,11 +729,11 @@ public:
     }
 
 
-    STDMETHODIMP Invoke(DISPID dispIdMember, REFIID WXUNUSED(riid),
-                        LCID WXUNUSED(lcid),
+    STDMETHODIMP Invoke(DISPID dispIdMember, REFIID riid,
+                        LCID lcid,
                           WORD wFlags, DISPPARAMS * pDispParams,
-                          VARIANT * WXUNUSED(pVarResult), EXCEPINFO * WXUNUSED(pExcepInfo),
-                          unsigned int * WXUNUSED(puArgErr))
+                          VARIANT * pVarResult, EXCEPINFO * pExcepInfo,
+                          unsigned int * puArgErr)
     {
         if (wFlags & (DISPATCH_PROPERTYGET | DISPATCH_PROPERTYPUT | DISPATCH_PROPERTYPUTREF))
             return E_NOTIMPL;
@@ -731,31 +745,37 @@ public:
         // Dispatch Event
         wxActiveXEvent  event;
         event.SetEventType(wxEVT_ACTIVEX);
+        // Create an empty list of Variants
+        // Note that the event parameters use lazy evaluation
+        // They are not actually created until wxActiveXEvent::operator[] is called
         event.m_params.NullList();
         event.m_dispid = dispIdMember;
 
-        // arguments
-        if (pDispParams)
-        {
-            for (DWORD i = pDispParams->cArgs; i > 0; i--)
-            {
-                VARIANTARG& va = pDispParams->rgvarg[i-1];
-                wxVariant vx;
+        // save the native (MSW) event parameters for event handlers that need to access them
+        // this can be done on the stack since wxActiveXEvent is also allocated on the stack
+        wxActiveXEventNativeMSW eventParameters(dispIdMember, riid, lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
+        event.SetClientData(&eventParameters);
 
-//                        vx.SetName(px.name);
-                wxConvertOleToVariant(va, vx);
-                event.m_params.Append(vx);
-            }
-        }
+        // The event parameters are not copied to event.m_params until they are actually
+        // referenced in wxActiveXEvent::operator[]
+        // This increases performance and avoids error messages and/or crashes
+        // when the event has parameters that are not (yet or never) supported
+        // by wxConvertOleToVariant
 
         // process the events from the activex method
-           m_activeX->ProcessEvent(event);
+        m_activeX->ProcessEvent(event);
         for (DWORD i = 0; i < pDispParams->cArgs; i++)
         {
-            VARIANTARG& va = pDispParams->rgvarg[i];
-            wxVariant& vx =
-                event.m_params[pDispParams->cArgs - i - 1];
-            wxConvertVariantToOle(vx, va);
+            size_t params_index = pDispParams->cArgs - i - 1;
+            if (params_index < event.m_params.GetCount()) {
+                wxVariant &vx = event.m_params[params_index];
+                // copy the result back to pDispParams only if the event has been accessed
+                //  i.e.  if vx != ms_invalidEntryMarker
+                if (!vx.IsType(wxActiveXEvents::ms_invalidEntryMarker.GetType()) || vx!=ms_invalidEntryMarker) {
+                    VARIANTARG& va = pDispParams->rgvarg[i];
+                    wxConvertVariantToOle(vx, va);
+                }
+            }
         }
 
         if(event.GetSkipped())
@@ -765,11 +785,61 @@ public:
     }
 };
 
+namespace
+{
+// just a unique global variable
+const int invalid_entry_marker = 0;
+}
+
+wxVariant wxActiveXEvents::ms_invalidEntryMarker((void*)&invalid_entry_marker);
+
+size_t wxActiveXEvent::ParamCount() const
+{
+    wxActiveXEventNativeMSW *native=GetNativeParameters();
+    // 'native' will always be != if the event has been created
+    // for an actual active X event.
+    // But it may be zero if the event has been created by wx program code.
+    if (native)
+        return native->pDispParams ? native->pDispParams->cArgs : 0;
+
+    return m_params.GetCount();
+}
+
+wxVariant &wxActiveXEvent::operator [](size_t idx)
+{
+    wxASSERT(idx < ParamCount());
+    wxActiveXEventNativeMSW *native=GetNativeParameters();
+    // 'native' will always be != if the event has been created
+    // for an actual active X event.
+    // But it may be zero if the event has been created by wx program code.
+    if (native)
+    {
+        while ( m_params.GetCount()<=idx )
+        {
+            m_params.Append(wxActiveXEvents::ms_invalidEntryMarker);
+        }
+
+        wxVariant& vx = m_params[idx];
+        if ( vx.IsType(wxActiveXEvents::ms_invalidEntryMarker.GetType()) &&
+                vx == wxActiveXEvents::ms_invalidEntryMarker)
+        {
+            // copy the _real_ parameter into this one
+            // NOTE: m_params stores the parameters in *reverse* order.
+            // Whyever, but this was the case in the original implementation of
+            // wxActiveXEvents::Invoke
+            // Keep this convention.
+            VARIANTARG& va = native->pDispParams->rgvarg[ native->pDispParams->cArgs - idx - 1 ];
+            wxConvertOleToVariant(va, vx);
+        }
+        return vx;
+    }
+    return m_params[idx];
+}
+
 bool wxActiveXEventsInterface(wxActiveXEvents *self, REFIID iid, void **_interface, const char *&desc)
 {
     if (self->m_haveCustomId && IsEqualIID(iid, self->m_customId))
     {
-//        WXOLE_TRACE("Found Custom Dispatch Interface");
         *_interface = (IUnknown *) (IDispatch *) self;
         desc = "Custom Dispatch Interface";
         return true;
@@ -813,13 +883,13 @@ wxActiveXContainer::wxActiveXContainer(wxWindow * parent,
 wxActiveXContainer::~wxActiveXContainer()
 {
     // disconnect connection points
-    if (m_oleInPlaceObject.Ok())
+    if (m_oleInPlaceObject.IsOk())
     {
         m_oleInPlaceObject->InPlaceDeactivate();
         m_oleInPlaceObject->UIDeactivate();
     }
 
-    if (m_oleObject.Ok())
+    if (m_oleObject.IsOk())
     {
         if (m_docAdviseCookie != 0)
             m_oleObject->Unadvise(m_docAdviseCookie);
@@ -839,10 +909,10 @@ wxActiveXContainer::~wxActiveXContainer()
 }
 
 // VZ: we might want to really report an error instead of just asserting here
-#ifdef __WXDEBUG__
+#if wxDEBUG_LEVEL
     #define CHECK_HR(hr) \
-        wxASSERT_MSG( SUCCEEDED(hr), \
-            wxString::Format("HRESULT = %X", (unsigned)(hr)) )
+        wxASSERT_LEVEL_2_MSG( SUCCEEDED(hr), \
+                wxString::Format("HRESULT = %X", (unsigned)(hr)) )
 #else
     #define CHECK_HR(hr) wxUnusedVar(hr)
 #endif
@@ -869,7 +939,7 @@ void wxActiveXContainer::CreateActiveX(REFIID iid, IUnknown* pUnk)
     CHECK_HR(hret);
     // adviseSink
     wxAutoIAdviseSink adviseSink(IID_IAdviseSink, (IDispatch *) m_frameSite);
-    wxASSERT(adviseSink.Ok());
+    wxASSERT(adviseSink.IsOk());
 
     // Get Dispatch interface
     hret = m_Dispatch.QueryInterface(IID_IDispatch, m_ActiveX);
@@ -881,13 +951,13 @@ void wxActiveXContainer::CreateActiveX(REFIID iid, IUnknown* pUnk)
 
     // get type info via class info
     wxAutoIProvideClassInfo classInfo(IID_IProvideClassInfo, m_ActiveX);
-    wxASSERT(classInfo.Ok());
+    wxASSERT(classInfo.IsOk());
 
     // type info
     wxAutoITypeInfo typeInfo;
     hret = classInfo->GetClassInfo(typeInfo.GetRef());
     CHECK_HR(hret);
-    wxASSERT(typeInfo.Ok());
+    wxASSERT(typeInfo.IsOk());
 
     // TYPEATTR
     TYPEATTR *ta = NULL;
@@ -910,7 +980,7 @@ void wxActiveXContainer::CreateActiveX(REFIID iid, IUnknown* pUnk)
         // get dispatch type info interface
         wxAutoITypeInfo  ti;
         hret = typeInfo->GetRefTypeInfo(rt, ti.GetRef());
-        if (! ti.Ok())
+        if (! ti.IsOk())
             continue;
 
         CHECK_HR(hret);
@@ -951,17 +1021,31 @@ void wxActiveXContainer::CreateActiveX(REFIID iid, IUnknown* pUnk)
                 DWORD                    adviseCookie = 0;
 
                 wxAutoIConnectionPointContainer cpContainer(IID_IConnectionPointContainer, m_ActiveX);
-                wxASSERT( cpContainer.Ok());
+                wxASSERT( cpContainer.IsOk());
 
                 HRESULT hret =
                     cpContainer->FindConnectionPoint(ta->guid, cp.GetRef());
-                CHECK_HR(hret);
 
-                IDispatch* disp;
-                m_frameSite->QueryInterface(IID_IDispatch, (void**)&disp);
-                hret = cp->Advise(new wxActiveXEvents(this, ta->guid),
-                                  &adviseCookie);
-                CHECK_HR(hret);
+                // Notice that the return value of CONNECT_E_NOCONNECTION is
+                // expected if the interface doesn't support connection points.
+                if ( hret != CONNECT_E_NOCONNECTION )
+                {
+                    CHECK_HR(hret);
+                }
+
+                if ( cp )
+                {
+                    wxActiveXEvents * const
+                        events = new wxActiveXEvents(this, ta->guid);
+                    hret = cp->Advise(events, &adviseCookie);
+
+                    // We don't need this object any more and cp will keep a
+                    // reference to it if it needs it, i.e. if Advise()
+                    // succeeded.
+                    events->Release();
+
+                    CHECK_HR(hret);
+                }
             }
         }
 
@@ -1014,7 +1098,7 @@ void wxActiveXContainer::CreateActiveX(REFIID iid, IUnknown* pUnk)
     wxAutoIPersistStreamInit
         pPersistStreamInit(IID_IPersistStreamInit, m_oleObject);
 
-    if (pPersistStreamInit.Ok())
+    if (pPersistStreamInit.IsOk())
     {
         hret = pPersistStreamInit->InitNew();
         CHECK_HR(hret);
@@ -1026,35 +1110,35 @@ void wxActiveXContainer::CreateActiveX(REFIID iid, IUnknown* pUnk)
 
     m_oleObjectHWND = 0;
 
-    if (m_oleInPlaceObject.Ok())
-    {
-        hret = m_oleInPlaceObject->GetWindow(&m_oleObjectHWND);
-        if (SUCCEEDED(hret))
-            ::SetActiveWindow(m_oleObjectHWND);
-    }
-
 
     if (! (dwMiscStatus & OLEMISC_INVISIBLEATRUNTIME))
     {
         RECT posRect;
         wxCopyRectToRECT(m_realparent->GetClientSize(), posRect);
 
+        hret = m_oleObject->DoVerb(OLEIVERB_INPLACEACTIVATE, NULL,
+            m_clientSite, 0, (HWND)m_realparent->GetHWND(), &posRect);
+        CHECK_HR(hret);
+
+        if (m_oleInPlaceObject.IsOk())
+        {
+            hret = m_oleInPlaceObject->GetWindow(&m_oleObjectHWND);
+            CHECK_HR(hret);
+            ::SetActiveWindow(m_oleObjectHWND);
+        }
+
         if (posRect.right > 0 && posRect.bottom > 0 &&
-            m_oleInPlaceObject.Ok())
+            m_oleInPlaceObject.IsOk())
         {
             m_oleInPlaceObject->SetObjectRects(&posRect, &posRect);
         }
 
-        hret = m_oleObject->DoVerb(OLEIVERB_INPLACEACTIVATE, NULL,
-            m_clientSite, 0, (HWND)m_realparent->GetHWND(), &posRect);
-        CHECK_HR(hret);
-
         hret = m_oleObject->DoVerb(OLEIVERB_SHOW, 0, m_clientSite, 0,
             (HWND)m_realparent->GetHWND(), &posRect);
         CHECK_HR(hret);
     }
 
-    if (! m_oleObjectHWND && m_oleInPlaceObject.Ok())
+    if (! m_oleObjectHWND && m_oleInPlaceObject.IsOk())
     {
         hret = m_oleInPlaceObject->GetWindow(&m_oleObjectHWND);
         CHECK_HR(hret);
@@ -1099,14 +1183,12 @@ void wxActiveXContainer::OnSize(wxSizeEvent& event)
     posRect.right = w;
     posRect.bottom = h;
 
-    if (w <= 0 && h <= 0)
+    if (w <= 0 || h <= 0)
         return;
 
     // extents are in HIMETRIC units
-    if (m_oleObject.Ok())
+    if (m_oleObject.IsOk())
     {
-        m_oleObject->DoVerb(OLEIVERB_HIDE, 0, m_clientSite, 0,
-            (HWND)m_realparent->GetHWND(), &posRect);
 
         SIZEL sz = {w, h};
         PixelsToHimetric(sz);
@@ -1117,11 +1199,9 @@ void wxActiveXContainer::OnSize(wxSizeEvent& event)
         if (sz2.cx !=  sz.cx || sz.cy != sz2.cy)
             m_oleObject->SetExtent(DVASPECT_CONTENT, &sz);
 
-        m_oleObject->DoVerb(OLEIVERB_SHOW, 0, m_clientSite, 0,
-            (HWND)m_realparent->GetHWND(), &posRect);
     }
 
-    if (m_oleInPlaceObject.Ok())
+    if (m_oleInPlaceObject.IsOk())
         m_oleInPlaceObject->SetObjectRects(&posRect, &posRect);
 
     event.Skip();
@@ -1165,7 +1245,7 @@ void wxActiveXContainer::OnPaint(wxPaintEvent& WXUNUSED(event))
 //---------------------------------------------------------------------------
 void wxActiveXContainer::OnSetFocus(wxFocusEvent& event)
 {
-    if (m_oleInPlaceActiveObject.Ok())
+    if (m_oleInPlaceActiveObject.IsOk())
         m_oleInPlaceActiveObject->OnFrameWindowActivate(TRUE);
 
     event.Skip();
@@ -1179,10 +1259,39 @@ void wxActiveXContainer::OnSetFocus(wxFocusEvent& event)
 //---------------------------------------------------------------------------
 void wxActiveXContainer::OnKillFocus(wxFocusEvent& event)
 {
-    if (m_oleInPlaceActiveObject.Ok())
+    if (m_oleInPlaceActiveObject.IsOk())
         m_oleInPlaceActiveObject->OnFrameWindowActivate(FALSE);
 
     event.Skip();
 }
 
+//---------------------------------------------------------------------------
+// wxActiveXContainer::MSWTranslateMessage
+//
+// Called for every message that needs to be translated.
+// Some controls might need more keyboard keys to process (CTRL-C, CTRL-A etc),
+// In that case TranslateAccelerator should always be called first.
+//---------------------------------------------------------------------------
+bool wxActiveXContainer::MSWTranslateMessage(WXMSG* pMsg)
+{
+    if(m_oleInPlaceActiveObject.IsOk() && m_oleInPlaceActiveObject->TranslateAccelerator(pMsg) == S_OK)
+    {
+        return true;
+    }
+    return wxWindow::MSWTranslateMessage(pMsg);
+}
+
+//---------------------------------------------------------------------------
+// wxActiveXContainer::QueryClientSiteInterface
+//
+// Called in the host's site's query method for other interfaces.
+//---------------------------------------------------------------------------
+bool wxActiveXContainer::QueryClientSiteInterface(REFIID iid, void **_interface, const char *&desc)
+{
+    wxUnusedVar(iid);
+    wxUnusedVar(_interface);
+    wxUnusedVar(desc);
+    return false;
+}
+
 #endif // wxUSE_ACTIVEX