diff --git a/include/wx/defs.h b/include/wx/defs.h
index 1cb8ad1794..909aade4d5 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -667,6 +667,17 @@ typedef short int WXTYPE;
 #   define wxGCC_WARNING_RESTORE(x)
 #endif
 
+/* Specific macros for -Wcast-function-type warning new in gcc 8. */
+#if wxCHECK_GCC_VERSION(8, 0)
+    #define wxGCC_WARNING_SUPPRESS_CAST_FUNCTION_TYPE() \
+        wxGCC_WARNING_SUPPRESS(cast-function-type)
+    #define wxGCC_WARNING_RESTORE_CAST_FUNCTION_TYPE() \
+        wxGCC_WARNING_RESTORE(cast-function-type)
+#else
+    #define wxGCC_WARNING_SUPPRESS_CAST_FUNCTION_TYPE()
+    #define wxGCC_WARNING_RESTORE_CAST_FUNCTION_TYPE()
+#endif
+
 /*
    Macros to suppress and restore clang warning only when it is valid.
 
@@ -2845,11 +2856,18 @@ typedef wxW64 long         WXLPARAM;
 typedef wxW64 long         WXLRESULT;
 #endif
 
+/*
+   This is defined for compatibility only, it's not really the same thing as
+   FARPROC.
+ */
 #if defined(__GNUWIN32__)
 typedef int             (*WXFARPROC)();
 #else
 typedef int             (__stdcall *WXFARPROC)();
 #endif
+
+typedef WXLRESULT (wxSTDCALL *WXWNDPROC)(WXHWND, WXUINT, WXWPARAM, WXLPARAM);
+
 #endif /*  __WIN32__ */
 
 
diff --git a/include/wx/dynarray.h b/include/wx/dynarray.h
index fa52765dd3..d7adffbd35 100644
--- a/include/wx/dynarray.h
+++ b/include/wx/dynarray.h
@@ -44,6 +44,11 @@ typedef int (wxCMPFUNC_CONV *CMPFUNC)(const void* pItem1, const void* pItem2);
 // Array class providing legacy dynamic arrays API on top of wxVector<>
 // ----------------------------------------------------------------------------
 
+// For some reasons lost in the depths of time, sort functions with different
+// signatures are used to sort normal arrays and to keep sorted arrays sorted.
+// These two functors can be used as predicates with std::sort() adapting the
+// sort function to it, whichever signature it uses.
+
 template<class T>
 class wxArray_SortFunction
 {
@@ -52,7 +57,7 @@ public:
 
     wxArray_SortFunction(CMPFUNC f) : m_f(f) { }
     bool operator()(const T& i1, const T& i2)
-      { return m_f((T*)&i1, (T*)&i2) < 0; }
+      { return m_f(const_cast<T*>(&i1), const_cast<T*>(&i2)) < 0; }
 private:
     CMPFUNC m_f;
 };
@@ -74,9 +79,9 @@ template <typename T>
 class wxBaseArray : public wxVector<T>
 {
     typedef wxSortedArray_SortFunction<T> Predicate;
-    typedef int (wxCMPFUNC_CONV *SCMPFUNC)(T, T);
 
 public:
+    typedef typename Predicate::CMPFUNC SCMPFUNC;
     typedef typename wxArray_SortFunction<T>::CMPFUNC CMPFUNC;
 
     typedef wxVector<T> base_vec;
@@ -151,17 +156,17 @@ public:
         return wxNOT_FOUND;
     }
 
-    int Index(T lItem, CMPFUNC fnCompare) const
+    int Index(T lItem, SCMPFUNC fnCompare) const
     {
-        Predicate p((SCMPFUNC)fnCompare);
+        Predicate p(fnCompare);
         const_iterator i = std::lower_bound(this->begin(), this->end(), lItem, p);
         return i != this->end() && !p(lItem, *i) ? (int)(i - this->begin())
                                                  : wxNOT_FOUND;
     }
 
-    size_t IndexForInsert(T lItem, CMPFUNC fnCompare) const
+    size_t IndexForInsert(T lItem, SCMPFUNC fnCompare) const
     {
-        Predicate p((SCMPFUNC)fnCompare);
+        Predicate p(fnCompare);
         const_iterator i = std::lower_bound(this->begin(), this->end(), lItem, p);
         return i - this->begin();
     }
@@ -171,7 +176,7 @@ public:
         this->insert(this->end(), nInsert, lItem);
     }
 
-    size_t Add(T lItem, CMPFUNC fnCompare)
+    size_t Add(T lItem, SCMPFUNC fnCompare)
     {
         size_t n = IndexForInsert(lItem, fnCompare);
         Insert(lItem, n);
@@ -200,6 +205,12 @@ public:
         wxArray_SortFunction<T> p(fCmp);
         std::sort(this->begin(), this->end(), p);
     }
+
+    void Sort(SCMPFUNC fCmp)
+    {
+        Predicate p(fCmp);
+        std::sort(this->begin(), this->end(), p);
+    }
 };
 
 // ============================================================================
@@ -223,8 +234,6 @@ public:
 template <typename T, typename Cmp>
 class wxBaseSortedArray : public wxBaseArray<T>
 {
-    typedef typename wxBaseArray<T>::CMPFUNC CMPFUNC;
-
 public:
     explicit wxBaseSortedArray(Cmp fn) : m_fnCompare(fn) { }
 
@@ -237,7 +246,7 @@ public:
 
     size_t IndexForInsert(T item) const
     {
-        return this->wxBaseArray<T>::IndexForInsert(item, (CMPFUNC)m_fnCompare);
+        return this->wxBaseArray<T>::IndexForInsert(item, m_fnCompare);
     }
 
     void AddAt(T item, size_t index)
@@ -247,7 +256,7 @@ public:
 
     size_t Add(T item)
     {
-        return this->wxBaseArray<T>::Add(item, (CMPFUNC)m_fnCompare);
+        return this->wxBaseArray<T>::Add(item, m_fnCompare);
     }
 
     void push_back(T item)
diff --git a/include/wx/event.h b/include/wx/event.h
index a46f11f943..21fa3924c7 100644
--- a/include/wx/event.h
+++ b/include/wx/event.h
@@ -81,9 +81,9 @@ typedef int wxEventType;
 
 #define wxEVT_ANY           ((wxEventType)-1)
 
-// this is used to make the event table entry type safe, so that for an event
-// handler only a function with proper parameter list can be given. See also
-// the wxEVENT_HANDLER_CAST-macro.
+// This macro exists for compatibility only (even though it was never public,
+// it still appears in some code using wxWidgets), see public
+// wxEVENT_HANDLER_CAST instead.
 #define wxStaticCastEvent(type, val) static_cast<type>(val)
 
 #define wxDECLARE_EVENT_TABLE_ENTRY(type, winid, idLast, fn, obj) \
@@ -122,10 +122,30 @@ extern WXDLLIMPEXP_BASE wxEventType wxNewEventType();
 #define wxDECLARE_EXPORTED_EVENT_ALIAS( expdecl, name, type ) \
     extern const expdecl wxEventTypeTag< type > name
 
-// Try to cast the given event handler to the correct handler type:
+// The type-erased method signature used for event handling.
+typedef void (wxEvtHandler::*wxEventFunction)(wxEvent&);
 
+template <typename T>
+inline wxEventFunction wxEventFunctionCast(void (wxEvtHandler::*func)(T&))
+{
+    // There is no going around the cast here: we do rely calling the event
+    // handler method, which takes a reference to an object of a class derived
+    // from wxEvent, as if it took wxEvent itself. On all platforms supported
+    // by wxWidgets, this cast is harmless, but it's not a valid cast in C++
+    // and gcc 8 started giving warnings about this (with -Wextra), so suppress
+    // them locally to avoid generating hundreds of them when compiling any
+    // code using event table macros.
+
+    wxGCC_WARNING_SUPPRESS_CAST_FUNCTION_TYPE()
+
+    return reinterpret_cast<wxEventFunction>(func);
+
+    wxGCC_WARNING_RESTORE_CAST_FUNCTION_TYPE()
+}
+
+// Try to cast the given event handler to the correct handler type:
 #define wxEVENT_HANDLER_CAST( functype, func ) \
-    ( wxObjectEventFunction )( wxEventFunction )wxStaticCastEvent( functype, &func )
+    wxEventFunctionCast(static_cast<functype>(&func))
 
 
 // The tag is a type associated to the event type (which is an integer itself,
@@ -150,9 +170,6 @@ private:
     wxEventType m_type;
 };
 
-// These are needed for the functor definitions
-typedef void (wxEvtHandler::*wxEventFunction)(wxEvent&);
-
 // We had some trouble with using wxEventFunction
 // in the past so we had introduced wxObjectEventFunction which
 // used to be a typedef for a member of wxObject and not wxEvtHandler to work
@@ -295,8 +312,8 @@ struct HandlerImpl<T, A, true>
     static wxEvtHandler *ConvertToEvtHandler(T *p)
         { return p; }
     static wxEventFunction ConvertToEvtMethod(void (T::*f)(A&))
-        { return static_cast<wxEventFunction>(
-                    reinterpret_cast<void (T::*)(wxEvent&)>(f)); }
+        { return wxEventFunctionCast(
+                    static_cast<void (wxEvtHandler::*)(A&)>(f)); }
 };
 
 // specialization for handlers not deriving from wxEvtHandler
diff --git a/include/wx/hashmap.h b/include/wx/hashmap.h
index 371407e5a9..6289331e32 100644
--- a/include/wx/hashmap.h
+++ b/include/wx/hashmap.h
@@ -81,7 +81,7 @@ class WXDLLIMPEXP_BASE _wxHashTableBase2
 {
 public:
     typedef void (*NodeDtor)(_wxHashTable_NodeBase*);
-    typedef unsigned long (*BucketFromNode)(_wxHashTableBase2*,_wxHashTable_NodeBase*);
+    typedef size_t (*BucketFromNode)(_wxHashTableBase2*,_wxHashTable_NodeBase*);
     typedef _wxHashTable_NodeBase* (*ProcessNode)(_wxHashTable_NodeBase*);
 protected:
     static _wxHashTable_NodeBase* DummyProcessNode(_wxHashTable_NodeBase* node);
diff --git a/include/wx/msw/private.h b/include/wx/msw/private.h
index 1e4d0f8fcd..8e10ccd170 100644
--- a/include/wx/msw/private.h
+++ b/include/wx/msw/private.h
@@ -936,7 +936,10 @@ extern WXDLLIMPEXP_CORE int wxGetWindowId(WXHWND hWnd);
 
 // check if hWnd's WNDPROC is wndProc. Return true if yes, false if they are
 // different
-extern WXDLLIMPEXP_CORE bool wxCheckWindowWndProc(WXHWND hWnd, WXFARPROC wndProc);
+//
+// wndProc parameter is unused and only kept for compatibility
+extern WXDLLIMPEXP_CORE
+bool wxCheckWindowWndProc(WXHWND hWnd, WXWNDPROC wndProc = NULL);
 
 // Does this window style specify any border?
 inline bool wxStyleHasBorder(long style)
@@ -1055,54 +1058,28 @@ inline void wxFillRect(HWND hwnd, HDC hdc, HBRUSH hbr)
 // 32/64 bit helpers
 // ----------------------------------------------------------------------------
 
-#ifdef __WIN64__
-
-inline void *wxGetWindowProc(HWND hwnd)
-{
-    return (void *)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
-}
-
-inline void *wxGetWindowUserData(HWND hwnd)
-{
-    return (void *)::GetWindowLongPtr(hwnd, GWLP_USERDATA);
-}
-
-inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
-{
-    return (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)func);
-}
-
-inline void *wxSetWindowUserData(HWND hwnd, void *data)
-{
-    return (void *)::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
-}
-
-#else // __WIN32__
-
 // note that the casts to LONG_PTR here are required even on 32-bit machines
 // for the 64-bit warning mode of later versions of MSVC (C4311/4312)
 inline WNDPROC wxGetWindowProc(HWND hwnd)
 {
-    return (WNDPROC)(LONG_PTR)::GetWindowLong(hwnd, GWL_WNDPROC);
+    return (WNDPROC)(LONG_PTR)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
 }
 
 inline void *wxGetWindowUserData(HWND hwnd)
 {
-    return (void *)(LONG_PTR)::GetWindowLong(hwnd, GWL_USERDATA);
+    return (void *)(LONG_PTR)::GetWindowLongPtr(hwnd, GWLP_USERDATA);
 }
 
 inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
 {
-    return (WNDPROC)(LONG_PTR)::SetWindowLong(hwnd, GWL_WNDPROC, (LONG_PTR)func);
+    return (WNDPROC)(LONG_PTR)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)func);
 }
 
 inline void *wxSetWindowUserData(HWND hwnd, void *data)
 {
-    return (void *)(LONG_PTR)::SetWindowLong(hwnd, GWL_USERDATA, (LONG_PTR)data);
+    return (void *)(LONG_PTR)::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
 }
 
-#endif // __WIN64__/__WIN32__
-
 #endif // wxUSE_GUI && __WXMSW__
 
 #endif // _WX_PRIVATE_H_
diff --git a/include/wx/msw/spinctrl.h b/include/wx/msw/spinctrl.h
index 85363bf57d..612ca4bba2 100644
--- a/include/wx/msw/spinctrl.h
+++ b/include/wx/msw/spinctrl.h
@@ -100,7 +100,7 @@ public:
     // for internal use only
 
     // get the subclassed window proc of the buddy text
-    WXFARPROC GetBuddyWndProc() const { return m_wndProcBuddy; }
+    WXWNDPROC GetBuddyWndProc() const { return m_wndProcBuddy; }
 
     // return the spinctrl object whose buddy is the given window or NULL
     static wxSpinCtrl *GetSpinForTextCtrl(WXHWND hwndBuddy);
@@ -145,7 +145,7 @@ protected:
 
     // the data for the "buddy" text ctrl
     WXHWND     m_hwndBuddy;
-    WXFARPROC  m_wndProcBuddy;
+    WXWNDPROC  m_wndProcBuddy;
 
     // Block text update event after SetValue()
     bool m_blockEvent;
diff --git a/include/wx/msw/window.h b/include/wx/msw/window.h
index 8ea5f8725d..dd8741dcd7 100644
--- a/include/wx/msw/window.h
+++ b/include/wx/msw/window.h
@@ -206,8 +206,8 @@ public:
     void SubclassWin(WXHWND hWnd);
     void UnsubclassWin();
 
-    WXFARPROC MSWGetOldWndProc() const { return m_oldWndProc; }
-    void MSWSetOldWndProc(WXFARPROC proc) { m_oldWndProc = proc; }
+    WXWNDPROC MSWGetOldWndProc() const { return m_oldWndProc; }
+    void MSWSetOldWndProc(WXWNDPROC proc) { m_oldWndProc = proc; }
 
     // return true if the window is of a standard (i.e. not wxWidgets') class
     //
@@ -597,7 +597,7 @@ protected:
     WXHWND                m_hWnd;
 
     // the old window proc (we subclass all windows)
-    WXFARPROC             m_oldWndProc;
+    WXWNDPROC             m_oldWndProc;
 
     // additional (MSW specific) flags
     bool                  m_mouseInWindow:1;
diff --git a/src/generic/vlbox.cpp b/src/generic/vlbox.cpp
index 9efeccdaf7..4aabd378ad 100644
--- a/src/generic/vlbox.cpp
+++ b/src/generic/vlbox.cpp
@@ -79,11 +79,6 @@ bool wxVListBox::Create(wxWindow *parent,
                         long style,
                         const wxString& name)
 {
-#ifdef __WXMSW__
-    if ( (style & wxBORDER_MASK) == wxDEFAULT )
-        style |= wxBORDER_THEME;
-#endif
-
     style |= wxWANTS_CHARS | wxFULL_REPAINT_ON_RESIZE;
     if ( !wxVScrolledWindow::Create(parent, id, pos, size, style, name) )
         return false;
diff --git a/src/msw/dde.cpp b/src/msw/dde.cpp
index ad8b5d4a63..ccea317306 100644
--- a/src/msw/dde.cpp
+++ b/src/msw/dde.cpp
@@ -66,14 +66,14 @@ static void DDEDeleteConnection(HCONV hConv);
 static wxDDEServer *DDEFindServer(const wxString& s);
 
 extern "C" HDDEDATA EXPENTRY
-_DDECallback(WORD wType,
-             WORD wFmt,
+_DDECallback(UINT wType,
+             UINT wFmt,
              HCONV hConv,
              HSZ hsz1,
              HSZ hsz2,
              HDDEDATA hData,
-             DWORD lData1,
-             DWORD lData2);
+             ULONG_PTR lData1,
+             ULONG_PTR lData2);
 
 // Add topic name to atom table before using in conversations
 static HSZ DDEAddAtom(const wxString& string);
@@ -149,9 +149,7 @@ extern void wxDDEInitialize()
     if ( !DDEInitialized )
     {
         // Should insert filter flags
-        PFNCALLBACK callback = (PFNCALLBACK)
-            MakeProcInstance((FARPROC)_DDECallback, wxGetInstance());
-        UINT rc = DdeInitialize(&DDEIdInst, callback, APPCLASS_STANDARD, 0L);
+        UINT rc = DdeInitialize(&DDEIdInst, _DDECallback, APPCLASS_STANDARD, 0L);
         if ( rc != DMLERR_NO_ERROR )
         {
             DDELogError(wxT("Failed to initialize DDE"), rc);
@@ -773,14 +771,14 @@ bool wxDDEConnection::DoAdvise(const wxString& item,
 #define DDERETURN HDDEDATA
 
 HDDEDATA EXPENTRY
-_DDECallback(WORD wType,
-             WORD wFmt,
+_DDECallback(UINT wType,
+             UINT wFmt,
              HCONV hConv,
              HSZ hsz1,
              HSZ hsz2,
              HDDEDATA hData,
-             DWORD WXUNUSED(lData1),
-             DWORD WXUNUSED(lData2))
+             ULONG_PTR WXUNUSED(lData1),
+             ULONG_PTR WXUNUSED(lData2))
 {
     switch (wType)
     {
diff --git a/src/msw/glcanvas.cpp b/src/msw/glcanvas.cpp
index a942585bff..b5fd506d77 100644
--- a/src/msw/glcanvas.cpp
+++ b/src/msw/glcanvas.cpp
@@ -147,8 +147,24 @@ wxWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
 #define WGL_CONTEXT_ES_PROFILE_BIT_EXT            0x00000004
 #endif
 
-typedef HGLRC(WINAPI * PFNWGLCREATECONTEXTATTRIBSARBPROC)
-    (HDC hDC, HGLRC hShareContext, const int *attribList);
+// This helper function only exists to suppress unavoidable gcc 8 warnings
+// about incompatible function casts.
+template <typename T>
+inline T wxWGLProcCast(PROC proc)
+{
+    wxGCC_WARNING_SUPPRESS_CAST_FUNCTION_TYPE()
+
+    return reinterpret_cast<T>(proc);
+
+    wxGCC_WARNING_RESTORE_CAST_FUNCTION_TYPE()
+}
+
+// this macro defines a variable of type "name_t" called "name" and initializes
+// it with the pointer to WGL function "name" (which may be NULL)
+//
+// NB: type name_t must be defined by the code using the macro
+#define wxDEFINE_WGL_FUNC(name) \
+    name##_t name = wxWGLProcCast<name##_t>(wglGetProcAddress(#name))
 
 // ----------------------------------------------------------------------------
 // libraries
@@ -580,9 +596,11 @@ wxGLContext::wxGLContext(wxGLCanvas *win,
     wxCHECK_RET( tempContext, "wglCreateContext failed!" );
 
     wglMakeCurrent(win->GetHDC(), tempContext);
-    PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB
-            = (PFNWGLCREATECONTEXTATTRIBSARBPROC)
-            wglGetProcAddress("wglCreateContextAttribsARB");
+
+    typedef HGLRC(WINAPI * wglCreateContextAttribsARB_t)
+        (HDC hDC, HGLRC hShareContext, const int *attribList);
+
+    wxDEFINE_WGL_FUNC(wglCreateContextAttribsARB);
     wglMakeCurrent(win->GetHDC(), NULL);
     wglDeleteContext(tempContext);
 
@@ -810,11 +828,6 @@ bool wxGLCanvas::SwapBuffers()
 }
 
 
-// this macro defines a variable of type "name_t" called "name" and initializes
-// it with the pointer to WGL function "name" (which may be NULL)
-#define wxDEFINE_WGL_FUNC(name) \
-    name##_t name = (name##_t)wglGetProcAddress(#name)
-
 /* static */
 bool wxGLCanvasBase::IsExtensionSupported(const char *extension)
 {
diff --git a/src/msw/mediactrl_qt.cpp b/src/msw/mediactrl_qt.cpp
index 063abb1bd6..65948e9635 100644
--- a/src/msw/mediactrl_qt.cpp
+++ b/src/msw/mediactrl_qt.cpp
@@ -160,6 +160,11 @@ enum
     mcWithFrame                 = 16
 };
 
+typedef void (*PPRMProcType)(Movie theMovie, OSErr theErr, void* theRefCon);
+typedef Boolean (*MCFilterProcType)(MovieController theController,
+                                    short action, void *params,
+                                    LONG_PTR refCon);
+
 //---------------------------------------------------------------------------
 //  QT Library
 //---------------------------------------------------------------------------
@@ -246,7 +251,7 @@ public:
     wxDL_VOIDMETHOD_DEFINE(DisposeMovieController, (ComponentInstance ci), (ci))
     wxDL_METHOD_DEFINE(int, MCSetVisible, (ComponentInstance m, int b), (m, b), 0)
 
-    wxDL_VOIDMETHOD_DEFINE(PrePrerollMovie, (Movie m, long t, Fixed r, WXFARPROC p1, void* p2), (m,t,r,p1,p2) )
+    wxDL_VOIDMETHOD_DEFINE(PrePrerollMovie, (Movie m, long t, Fixed r, PPRMProcType p1, void* p2), (m,t,r,p1,p2) )
     wxDL_VOIDMETHOD_DEFINE(PrerollMovie, (Movie m, long t, Fixed r), (m,t,r) )
     wxDL_METHOD_DEFINE(Fixed, GetMoviePreferredRate, (Movie m), (m), 0)
     wxDL_METHOD_DEFINE(long, GetMovieLoadState, (Movie m), (m), 0)
@@ -263,7 +268,7 @@ public:
     wxDL_VOIDMETHOD_DEFINE(MCPositionController,
         (ComponentInstance ci, Rect* r, void* junk, void* morejunk), (ci,r,junk,morejunk))
     wxDL_VOIDMETHOD_DEFINE(MCSetActionFilterWithRefCon,
-        (ComponentInstance ci, WXFARPROC cb, void* ref), (ci,cb,ref))
+        (ComponentInstance ci, MCFilterProcType cb, void* ref), (ci,cb,ref))
     wxDL_VOIDMETHOD_DEFINE(MCGetControllerInfo, (MovieController mc, long* flags), (mc,flags))
     wxDL_VOIDMETHOD_DEFINE(BeginUpdate, (CGrafPtr port), (port))
     wxDL_VOIDMETHOD_DEFINE(UpdateMovie, (Movie m), (m))
@@ -804,8 +809,8 @@ bool wxQTMediaBackend::Load(const wxURI& location)
         // which we don't by default.
         //
         m_lib.PrePrerollMovie(m_movie, timeNow, playRate,
-                              (WXFARPROC)wxQTMediaBackend::PPRMProc,
-                              (void*)this);
+                              wxQTMediaBackend::PPRMProc,
+                              this);
 
         return true;
     }
@@ -1119,7 +1124,7 @@ bool wxQTMediaBackend::ShowPlayerControls(wxMediaCtrlPlayerControls flags)
                                                         mcWithFrame);
             m_lib.MCDoAction(m_pMC, 32, (void*)true); // mcActionSetKeysEnabled
             m_lib.MCSetActionFilterWithRefCon(m_pMC,
-                (WXFARPROC)wxQTMediaBackend::MCFilterProc, (void*)this);
+                wxQTMediaBackend::MCFilterProc, this);
             m_bestSize.y += 16; // movie controller height
 
             // By default the movie controller uses its own colour palette
diff --git a/src/msw/nativdlg.cpp b/src/msw/nativdlg.cpp
index d11a4dd2b9..cdd058fe5f 100644
--- a/src/msw/nativdlg.cpp
+++ b/src/msw/nativdlg.cpp
@@ -36,7 +36,7 @@
 // global functions
 // ---------------------------------------------------------------------------
 
-extern LONG APIENTRY
+extern INT_PTR APIENTRY
 wxDlgProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
 
 // ===========================================================================
diff --git a/src/msw/notebook.cpp b/src/msw/notebook.cpp
index 62fa2d61b3..21d3f7ab69 100644
--- a/src/msw/notebook.cpp
+++ b/src/msw/notebook.cpp
@@ -81,10 +81,10 @@
 #if USE_NOTEBOOK_ANTIFLICKER
 
 // the pointer to standard spin button wnd proc
-static WXFARPROC gs_wndprocNotebookSpinBtn = (WXFARPROC)NULL;
+static WXWNDPROC gs_wndprocNotebookSpinBtn = NULL;
 
 // the pointer to standard tab control wnd proc
-static WXFARPROC gs_wndprocNotebook = (WXFARPROC)NULL;
+static WXWNDPROC gs_wndprocNotebook = NULL;
 
 LRESULT APIENTRY
 wxNotebookWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
@@ -202,8 +202,7 @@ bool wxNotebook::Create(wxWindow *parent,
 
             if ( ::GetClassInfo(NULL, WC_TABCONTROL, &wc) )
             {
-                gs_wndprocNotebook =
-                    reinterpret_cast<WXFARPROC>(wc.lpfnWndProc);
+                gs_wndprocNotebook = wc.lpfnWndProc;
                 wc.lpszClassName = wxT("_wx_SysTabCtl32");
                 wc.style &= ~(CS_HREDRAW | CS_VREDRAW);
                 wc.hInstance = wxGetInstance();
@@ -996,7 +995,7 @@ void wxNotebook::OnSize(wxSizeEvent& event)
             {
                 // subclass the spin button to override WM_ERASEBKGND
                 if ( !gs_wndprocNotebookSpinBtn )
-                    gs_wndprocNotebookSpinBtn = (WXFARPROC)wxGetWindowProc(child);
+                    gs_wndprocNotebookSpinBtn = wxGetWindowProc(child);
 
                 wxSetWindowProc(child, wxNotebookSpinBtnWndProc);
                 m_hasSubclassedUpdown = true;
diff --git a/src/msw/radiobox.cpp b/src/msw/radiobox.cpp
index 7ed9d135ee..43a69bbc3e 100644
--- a/src/msw/radiobox.cpp
+++ b/src/msw/radiobox.cpp
@@ -113,7 +113,7 @@ namespace
 {
 
 // the pointer to standard radio button wnd proc
-WXFARPROC s_wndprocRadioBtn = (WXFARPROC)NULL;
+WXWNDPROC s_wndprocRadioBtn = NULL;
 
 // Hash allowing to find wxRadioBox containing the given radio button by its
 // HWND. This is used by (subclassed) radio button window proc to find the
@@ -298,7 +298,7 @@ void wxRadioBox::SubclassRadioButton(WXHWND hWndBtn)
     HWND hwndBtn = (HWND)hWndBtn;
 
     if ( !s_wndprocRadioBtn )
-        s_wndprocRadioBtn = (WXFARPROC)wxGetWindowProc(hwndBtn);
+        s_wndprocRadioBtn = wxGetWindowProc(hwndBtn);
 
     wxSetWindowProc(hwndBtn, wxRadioBtnWndProc);
 
diff --git a/src/msw/spinctrl.cpp b/src/msw/spinctrl.cpp
index adc534b01a..1e4e09cd46 100644
--- a/src/msw/spinctrl.cpp
+++ b/src/msw/spinctrl.cpp
@@ -329,8 +329,7 @@ bool wxSpinCtrl::Create(wxWindow *parent,
     // subclass the text ctrl to be able to intercept some events
     gs_spinForTextCtrl[GetBuddyHwnd()] = this;
 
-    m_wndProcBuddy = (WXFARPROC)wxSetWindowProc(GetBuddyHwnd(),
-                                                wxBuddyTextWndProc);
+    m_wndProcBuddy = wxSetWindowProc(GetBuddyHwnd(), wxBuddyTextWndProc);
 
     // associate the text window with the spin button
     (void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)m_hwndBuddy, 0);
diff --git a/src/msw/taskbar.cpp b/src/msw/taskbar.cpp
index 22583439bf..976f5e9197 100644
--- a/src/msw/taskbar.cpp
+++ b/src/msw/taskbar.cpp
@@ -92,7 +92,7 @@ struct NotifyIconData : public NOTIFYICONDATA
 {
     NotifyIconData(WXHWND hwnd)
     {
-        memset(this, 0, sizeof(NOTIFYICONDATA));
+        wxZeroMemory(*this);
 
         // Since Vista there is a new member hBalloonIcon which will be used
         // if a user specified icon is specified in ShowBalloon(). For XP 
diff --git a/src/msw/toplevel.cpp b/src/msw/toplevel.cpp
index 1d525d50f1..2d24bf92a5 100644
--- a/src/msw/toplevel.cpp
+++ b/src/msw/toplevel.cpp
@@ -51,7 +51,7 @@
 
 // NB: wxDlgProc must be defined here and not in dialog.cpp because the latter
 //     is not included by wxUniv build which does need wxDlgProc
-LONG APIENTRY
+INT_PTR APIENTRY
 wxDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam);
 
 // ----------------------------------------------------------------------------
@@ -1242,7 +1242,7 @@ void wxTopLevelWindowMSW::OnActivate(wxActivateEvent& event)
 }
 
 // the DialogProc for all wxWidgets dialogs
-LONG APIENTRY
+INT_PTR APIENTRY
 wxDlgProc(HWND WXUNUSED(hDlg),
           UINT message,
           WPARAM WXUNUSED(wParam),
diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index f55b8be586..cd7e253ebe 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -1248,11 +1248,11 @@ void wxWindowMSW::SubclassWin(WXHWND hWnd)
 
     wxAssociateWinWithHandle(hwnd, this);
 
-    m_oldWndProc = (WXFARPROC)wxGetWindowProc((HWND)hWnd);
+    m_oldWndProc = wxGetWindowProc((HWND)hWnd);
 
     // we don't need to subclass the window of our own class (in the Windows
     // sense of the word)
-    if ( !wxCheckWindowWndProc(hWnd, (WXFARPROC)wxWndProc) )
+    if ( !wxCheckWindowWndProc(hWnd) )
     {
         wxSetWindowProc(hwnd, wxWndProc);
 
@@ -1289,9 +1289,9 @@ void wxWindowMSW::UnsubclassWin()
 
         if ( m_oldWndProc )
         {
-            if ( !wxCheckWindowWndProc((WXHWND)hwnd, m_oldWndProc) )
+            if ( !wxCheckWindowWndProc((WXHWND)hwnd) )
             {
-                wxSetWindowProc(hwnd, (WNDPROC)m_oldWndProc);
+                wxSetWindowProc(hwnd, m_oldWndProc);
             }
 
             m_oldWndProc = NULL;
@@ -1322,8 +1322,7 @@ void wxWindowMSW::DissociateHandle()
 }
 
 
-bool wxCheckWindowWndProc(WXHWND hWnd,
-                          WXFARPROC WXUNUSED(wndProc))
+bool wxCheckWindowWndProc(WXHWND hWnd, WXWNDPROC WXUNUSED(wndProc))
 {
     const wxString str(wxGetWindowClass(hWnd));
 
@@ -2408,7 +2407,7 @@ WXLRESULT wxWindowMSW::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM l
 {
     WXLRESULT rc;
     if ( m_oldWndProc )
-        rc = ::CallWindowProc(CASTWNDPROC m_oldWndProc, GetHwnd(), (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
+        rc = ::CallWindowProc(m_oldWndProc, GetHwnd(), nMsg, wParam, lParam);
     else
         rc = ::DefWindowProc(GetHwnd(), nMsg, wParam, lParam);
 
@@ -6867,8 +6866,8 @@ extern wxWindow *wxGetWindowFromHWND(WXHWND hWnd)
 // in active frames and dialogs, regardless of where the focus is.
 static HHOOK wxTheKeyboardHook = 0;
 
-int APIENTRY
-wxKeyboardHook(int nCode, WORD wParam, DWORD lParam)
+LRESULT APIENTRY
+wxKeyboardHook(int nCode, WXWPARAM wParam, WXLPARAM lParam)
 {
     DWORD hiWord = HIWORD(lParam);
     if ( nCode != HC_NOREMOVE && ((hiWord & KF_UP) == 0) )
@@ -6935,7 +6934,7 @@ void wxSetKeyboardHook(bool doIt)
         wxTheKeyboardHook = ::SetWindowsHookEx
                               (
                                 WH_KEYBOARD,
-                                (HOOKPROC)wxKeyboardHook,
+                                wxKeyboardHook,
                                 NULL,   // must be NULL for process hook
                                 ::GetCurrentThreadId()
                               );