Update workarounds for incomplete mingw headers

The so-called "Vista/7 helpers" only define interfaces missing from mingw*

Remove duplicate declarations already in all mingw headers, include the
correct headers instead.

Link video outputs against libuuid to get the existing UUID instead of
defining our own.

Define the C interfaces as Microsoft does it by using lpVtbl for the
virtual table pointer.
See http://blogs.msdn.com/b/oldnewthing/archive/2004/02/05/68017.aspx

Define a C++ interface to TaskbarList3 for qt4, keep the C for video outputs.
Define only a C++ interface to IApplicationAssociationRegistrationUI

Define TaskbarList3->SetTabActive() correctly.
See http://msdn.microsoft.com/en-us/library/windows/desktop/dd391699(v=vs.85).aspx

ifdef the TaskbarList3 interface because mingw-w64 defines it already.

diff --git a/configure.ac b/configure.ac
index dd73d2a17f8f953ed658c9ed44ef2969a9d76940..a0f9affbed8144c7a19568a5c265e48796048cf6 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -3195,7 +3195,7 @@ if test "${enable_directx}" != "no"; then
       [ VLC_ADD_PLUGIN([direct3d])
         VLC_ADD_LIBS([direct3d],[-lgdi32])
       ])
-      VLC_ADD_LIBS([direct3d directx glwin32],[-lole32])
+      VLC_ADD_LIBS([direct3d directx glwin32],[-lole32 -luuid])
   fi
 fi
 
@@ -3225,7 +3225,7 @@ AC_ARG_ENABLE(wingdi,
 if test "${enable_wingdi}" != "no"; then
   if test "${SYS}" = "mingw32"; then
     VLC_ADD_PLUGIN([wingdi])
-    VLC_ADD_LIBS([wingdi],[-lgdi32 -lole32])
+    VLC_ADD_LIBS([wingdi],[-lgdi32 -lole32 -luuid])
   fi
   if test "${SYS}" = "mingwce"; then
     VLC_ADD_PLUGIN([wingdi wingapi])

diff --git a/include/vlc_windows_interfaces.h b/include/vlc_windows_interfaces.h
index 1f0a60adf3cdb1fb121ec1659359858a60e39ad2..af6ac0fe0d6b839fbb8d14cc31cd2057e3f98a86 100644 (file)
--- a/include/vlc_windows_interfaces.h
+++ b/include/vlc_windows_interfaces.h
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * vlc_windows_interfaces.h : Vista/7 helpers
+ * vlc_windows_interfaces.h : Replacement for incomplete MinGW headers
  ****************************************************************************
  *
  * Copyright (C) 2009-2010 VideoLAN
@@ -21,61 +21,27 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
-#ifndef VISTAASSOC_H
-#define VISTAASSOC_H
+#ifndef MINGW_WORKAROUNDS_H
+#define MINGW_WORKAROUNDS_H
 
-#include <commctrl.h>
-
-#ifndef STDCALL
-#define STDCALL
+#ifdef __MINGW32__
+# include <_mingw.h>
 #endif
 
-#define CLSCTX_INPROC_SERVER 1
-typedef GUID IID;
-
-#ifndef _REFIID_DEFINED
-# ifdef __cplusplus
-#  define REFIID const IID&
-# else
-#  define REFIID const IID* const
-# endif
+#ifdef __MINGW64_VERSION_MAJOR /* mingw.org lacks this header */
+# include <shobjidl.h>
 #endif
 
-const GUID clsid_IApplication2 = { 0x1968106d,0xf3b5,0x44cf,{0x89,0x0e,0x11,0x6f,0xcb,0x9e,0xce,0xf1}};
-const GUID IID_IApplicationAssociationRegistrationUI = {0x1f76a169,0xf994,0x40ac, {0x8f,0xc8,0x09,0x59,0xe8,0x87,0x47,0x10}};
+#include <commctrl.h>
+#include <basetyps.h>
+#include <objbase.h>
 
-const GUID clsid_ITaskbarList ={ 0x56FDF344,0xFD6D,0x11d0,{0x95,0x8A,0x00,0x60,0x97,0xC9,0xA0,0x90}};
+/* mingw.org fails to define this */
+#ifndef __ITaskbarList3_INTERFACE_DEFINED__
+#define __ITaskbarList3_INTERFACE_DEFINED__
+const GUID CLSID_TaskbarList ={ 0x56FDF344,0xFD6D,0x11d0,{0x95,0x8A,0x00,0x60,0x97,0xC9,0xA0,0x90}};
 const GUID IID_ITaskbarList3 = { 0xea1afb91,0x9e28,0x4b86,{0x90,0xe9,0x9e,0x9f,0x8a,0x5e,0xef,0xaf}};
-#ifndef __IUnknown_INTERFACE_DEFINED__
-#undef IUnknown
-typedef struct _IUnknown IUnknown;
-#endif
-typedef struct _IApplicationAssociationRegistrationUI IApplicationAssociationRegistrationUI;
-typedef struct _ITaskbarList3 ITaskbarList3;
 
-typedef struct IUnknown_vt
-{
-    long (STDCALL *QueryInterface)(IUnknown *This, const GUID *riid,
-                                   void **ppvObject);
-    long (STDCALL *AddRef)(IUnknown *This);
-    long (STDCALL *Release)(IUnknown *This);
-
-} IUnknown_vt;
-struct _IUnknown { IUnknown_vt* vt; };
-#ifndef __IUnknown_INTERFACE_DEFINED__
-typedef IUnknown *LPUNKNOWN;
-#endif
-typedef struct IApplicationAssociationRegistrationUI_vt
-{
-    /* IUnknown methods */
-    long (STDCALL *QueryInterface)(IUnknown *This, const GUID *riid,
-                                   void **ppvObject);
-    long (STDCALL *AddRef)(IUnknown *This);
-    long (STDCALL *Release)(IUnknown *This);
-    long (STDCALL *LaunchAdvancedAssociationUI)(IApplicationAssociationRegistrationUI *This, LPCWSTR app);
-} IApplicationAssociationRegistrationUI_vt;
-struct _IApplicationAssociationRegistrationUI { IApplicationAssociationRegistrationUI_vt* vt; };
-typedef IApplicationAssociationRegistrationUI *LPAPPASSOCREGUI, *PAPPASSOCREGUI;
 
 typedef enum TBPFLAG
 {
@@ -86,12 +52,6 @@ typedef enum TBPFLAG
     TBPF_PAUSED        = 0x8
 } TBPFLAG;
 
-typedef enum TBATFLAG
-{
-    TBATF_USEMDITHUMBNAIL   = 0x1,
-    TBATF_USEMDILIVEPREVIEW = 0x2
-} TBATFLAG;
-
 typedef struct tagTHUMBBUTTON
 {
     DWORD dwMask;
@@ -105,90 +65,177 @@ typedef struct tagTHUMBBUTTON
 
 typedef struct tagTHUMBBUTTON *LPTHUMBBUTTON;
 
-// THUMBBUTTON flags
-#define THBF_ENABLED             0x0000
-#define THBF_DISABLED            0x0001
-#define THBF_DISMISSONCLICK      0x0002
-#define THBF_NOBACKGROUND        0x0004
-#define THBF_HIDDEN              0x0008
-
-// THUMBBUTTON mask
-#define THB_BITMAP          0x0001
-#define THB_ICON            0x0002
-#define THB_TOOLTIP         0x0004
-#define THB_FLAGS           0x0008
-#define THBN_CLICKED        0x1800
-
-typedef struct ITaskbarList3Vtbl
+typedef enum THUMBBUTTONMASK {
+    THB_BITMAP  = 0x1,
+    THB_ICON    = 0x2,
+    THB_TOOLTIP = 0x4,
+    THB_FLAGS   = 0x8
+} THUMBBUTTONMASK;
+
+typedef enum THUMBBUTTONFLAGS {
+    THBF_ENABLED        = 0x0,
+    THBF_DISABLED       = 0x1,
+    THBF_DISMISSONCLICK = 0x2,
+    THBF_NOBACKGROUND   = 0x4,
+    THBF_HIDDEN         = 0x8,
+    THBF_NONINTERACTIVE = 0x10
+} THUMBBUTTONFLAGS;
+
+#ifndef THBN_CLICKED
+# define THBN_CLICKED        0x1800
+#endif
+
+#ifdef __cplusplus
+interface ITaskbarList : public IUnknown {
+public:
+    virtual HRESULT WINAPI HrInit(void) = 0;
+    virtual HRESULT WINAPI AddTab(HWND hwnd) = 0;
+    virtual HRESULT WINAPI DeleteTab(HWND hwnd) = 0;
+    virtual HRESULT WINAPI ActivateTab(HWND hwnd) = 0;
+    virtual HRESULT WINAPI SetActiveAlt(HWND hwnd) = 0;
+};
+
+interface ITaskbarList2 : public ITaskbarList {
+public:
+    virtual HRESULT WINAPI MarkFullscreenWindow(HWND hwnd,WINBOOL fFullscreen) = 0;
+};
+
+interface ITaskbarList3 : public ITaskbarList2
+{
+    virtual HRESULT STDMETHODCALLTYPE SetProgressValue(
+        HWND hwnd,
+        ULONGLONG ullCompleted,
+        ULONGLONG ullTotal) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE SetProgressState(
+        HWND hwnd,
+        TBPFLAG tbpFlags) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE RegisterTab(
+        HWND hwndTab,
+        HWND hwndMDI) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE UnregisterTab(
+        HWND hwndTab) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE SetTabOrder(
+        HWND hwndTab,
+        HWND hwndInsertBefore) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE SetTabActive(
+        HWND hwndTab,
+        HWND hwndMDI,
+        DWORD dwReserved) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE ThumbBarAddButtons(
+        HWND hwnd,
+        UINT cButtons,
+        LPTHUMBBUTTON pButton) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE ThumbBarUpdateButtons(
+        HWND hwnd,
+        UINT cButtons,
+        LPTHUMBBUTTON pButton) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE ThumbBarSetImageList(
+        HWND hwnd,
+        HIMAGELIST himl) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE SetOverlayIcon(
+        HWND hwnd,
+        HICON hIcon,
+        LPCWSTR pszDescription) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE SetThumbnailTooltip(
+        HWND hwnd,
+        LPCWSTR pszTip) = 0;
+
+    virtual HRESULT STDMETHODCALLTYPE SetThumbnailClip(
+        HWND hwnd,
+        RECT *prcClip) = 0;
+
+};
+
+#else /* !__cplusplus */
+
+struct ITaskbarList3Vtbl;
+struct ITaskbarList3 { struct ITaskbarList3Vtbl* lpVtbl; };
+typedef struct ITaskbarList3 ITaskbarList3;
+
+struct ITaskbarList3Vtbl
 {
 
-    long ( STDCALL *QueryInterface )(ITaskbarList3 * This, REFIID riid, void **ppvObject);
+    long ( WINAPI *QueryInterface )(ITaskbarList3 * This, REFIID riid, void **ppvObject);
 
-    long ( STDCALL *AddRef )( ITaskbarList3 * This);
+    long ( WINAPI *AddRef )(ITaskbarList3 *This);
 
-    long ( STDCALL *Release )( ITaskbarList3 * This);
+    long ( WINAPI *Release )(ITaskbarList3 *This);
 
-    long ( STDCALL *HrInit )( ITaskbarList3 * This);
+    long ( WINAPI *HrInit )(ITaskbarList3 *This);
 
-    long ( STDCALL *AddTab )( ITaskbarList3 * This, HWND hwnd);
+    long ( WINAPI *AddTab )(ITaskbarList3 *This, HWND hwnd);
 
-    long ( STDCALL *DeleteTab )( ITaskbarList3 * This, HWND hwnd);
+    long ( WINAPI *DeleteTab )(ITaskbarList3 *This, HWND hwnd);
 
-    long ( STDCALL *ActivateTab )( ITaskbarList3 * This, HWND hwnd);
+    long ( WINAPI *ActivateTab )(ITaskbarList3 *This, HWND hwnd);
 
-    long ( STDCALL *SetActiveAlt )( ITaskbarList3 * This, HWND hwnd);
+    long ( WINAPI *SetActiveAlt )(ITaskbarList3 *This, HWND hwnd);
 
-    long ( STDCALL *MarkFullscreenWindow )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *MarkFullscreenWindow )(ITaskbarList3 *This, HWND hwnd,
         BOOL fFullscreen);
 
-    long ( STDCALL *SetProgressValue )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *SetProgressValue )(ITaskbarList3 *This, HWND hwnd,
         ULONGLONG ullCompleted, ULONGLONG ullTotal);
 
-    long ( STDCALL *SetProgressState )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *SetProgressState )(ITaskbarList3 *This, HWND hwnd,
         TBPFLAG tbpFlags);
 
-    long ( STDCALL *RegisterTab )(  ITaskbarList3 * This, HWND hwndTab, HWND hwndMDI);
+    long ( WINAPI *RegisterTab )( ITaskbarList3 *This, HWND hwndTab, HWND hwndMDI);
 
-    long ( STDCALL *UnregisterTab )( ITaskbarList3 * This, HWND hwndTab);
+    long ( WINAPI *UnregisterTab )(ITaskbarList3 *This, HWND hwndTab);
 
-    long ( STDCALL *SetTabOrder )( ITaskbarList3 * This, HWND hwndTab,
+    long ( WINAPI *SetTabOrder )(ITaskbarList3 *This, HWND hwndTab,
         HWND hwndInsertBefore);
 
-    long ( STDCALL *SetTabActive )( ITaskbarList3 * This, HWND hwndTab,
-        HWND hwndMDI, TBATFLAG tbatFlags);
+    long ( WINAPI *SetTabActive )(ITaskbarList3 *This, HWND hwndTab,
+        HWND hwndMDI, DWORD dwReserved);
 
-    long ( STDCALL *ThumbBarAddButtons )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *ThumbBarAddButtons )(ITaskbarList3 *This, HWND hwnd,
         UINT cButtons, LPTHUMBBUTTON pButton);
 
-    long ( STDCALL *ThumbBarUpdateButtons )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *ThumbBarUpdateButtons )(ITaskbarList3 *This, HWND hwnd,
         UINT cButtons, LPTHUMBBUTTON pButton);
 
-    long ( STDCALL *ThumbBarSetImageList )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *ThumbBarSetImageList )(ITaskbarList3 *This, HWND hwnd,
         HIMAGELIST himl);
 
-    long ( STDCALL *SetOverlayIcon )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *SetOverlayIcon )(ITaskbarList3 *This, HWND hwnd,
         HICON hIcon, LPCWSTR pszDescription);
 
-    long ( STDCALL *SetThumbnailTooltip )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *SetThumbnailTooltip )(ITaskbarList3 *This, HWND hwnd,
         LPCWSTR pszTip);
 
-    long ( STDCALL *SetThumbnailClip )( ITaskbarList3 * This, HWND hwnd,
+    long ( WINAPI *SetThumbnailClip )(ITaskbarList3 *This, HWND hwnd,
         RECT *prcClip);
 
-} ITaskbarList3Vtbl;
-
-struct _ITaskbarList3 { ITaskbarList3Vtbl* vt; };
-typedef ITaskbarList3 *LPTASKBARLIST3, *PTASKBARLIST3;
+};
 
+#endif /* __cplusplus */
+#endif /* __ITaskbarList3_INTERFACE_DEFINED__ */
 
+/* mingw-w64 also fails to define this as of 2.0.1 */
+#ifndef __IApplicationAssociationRegistrationUI_INTERFACE_DEFINED__
+#define __IApplicationAssociationRegistrationUI_INTERFACE_DEFINED__
+const GUID IID_IApplicationAssociationRegistrationUI = {0x1f76a169,0xf994,0x40ac, {0x8f,0xc8,0x09,0x59,0xe8,0x87,0x47,0x10}};
+const GUID CLSID_ApplicationAssociationRegistrationUI = { 0x1968106d,0xf3b5,0x44cf,{0x89,0x0e,0x11,0x6f,0xcb,0x9e,0xce,0xf1}};
 #ifdef __cplusplus
-extern "C" {
-#endif
-    HRESULT WINAPI CoCreateInstance(const GUID *,LPUNKNOWN,DWORD,REFIID,PVOID*);
-    HRESULT WINAPI CoInitialize(PVOID);
-    void WINAPI CoUninitialize(void);
-#ifdef __cplusplus
+
+interface IApplicationAssociationRegistrationUI : public IUnknown
+{
+    virtual HRESULT STDMETHODCALLTYPE LaunchAdvancedAssociationUI(
+        LPCWSTR pszAppRegName) = 0;
 };
-#endif
+#endif /* __cplusplus */
+#endif /* __IApplicationAssociationRegistrationUI_INTERFACE_DEFINED__ */
 
-#endif //VISTAASSOC_H
+#endif //MINGW_WORKAROUNDS_H

diff --git a/modules/gui/qt4/components/simple_preferences.cpp b/modules/gui/qt4/components/simple_preferences.cpp
index 08dda9c5e1b91164f6a81de48d82201d8dfe8acb..e806d745db13f0f036a8e9c4b91eb17ca0b7add0 100644 (file)
--- a/modules/gui/qt4/components/simple_preferences.cpp
+++ b/modules/gui/qt4/components/simple_preferences.cpp
@@ -928,15 +928,15 @@ bool SPrefsPanel::addType( const char * psz_ext, QTreeWidgetItem* current,
 
 void SPrefsPanel::assoDialog()
 {
-    LPAPPASSOCREGUI p_appassoc;
+    IApplicationAssociationRegistrationUI *p_appassoc;
     CoInitialize( 0 );
 
-    if( S_OK == CoCreateInstance( &clsid_IApplication2,
+    if( S_OK == CoCreateInstance(CLSID_ApplicationAssociationRegistrationUI,
                 NULL, CLSCTX_INPROC_SERVER,
                 IID_IApplicationAssociationRegistrationUI,
                 (void **)&p_appassoc) )
     {
-        if(S_OK == p_appassoc->vt->LaunchAdvancedAssociationUI(p_appassoc, L"VLC" ) )
+        if(S_OK == p_appassoc->LaunchAdvancedAssociationUI(L"VLC" ) )
         {
             CoUninitialize();
             return;

diff --git a/modules/gui/qt4/main_interface.cpp b/modules/gui/qt4/main_interface.cpp
index 2ac23975f8427bbfe06357fe178c559d48ac6034..3a44003bbff7c9e2a37ddd482465796698f52c27 100644 (file)
--- a/modules/gui/qt4/main_interface.cpp
+++ b/modules/gui/qt4/main_interface.cpp
@@ -267,7 +267,7 @@ MainInterface::~MainInterface()
     if( himl )
         ImageList_Destroy( himl );
     if(p_taskbl)
-        p_taskbl->vt->Release(p_taskbl);
+        p_taskbl->Release();
     CoUninitialize();
 #endif
 

diff --git a/modules/gui/qt4/main_interface.hpp b/modules/gui/qt4/main_interface.hpp
index 142d09252a88d4c9272f4594ca24b2d7f4a36ced..1231d25cf5d14f34ff671144b69196c9cbdb220e 100644 (file)
--- a/modules/gui/qt4/main_interface.hpp
+++ b/modules/gui/qt4/main_interface.hpp
@@ -172,7 +172,7 @@ private:
 
 #ifdef WIN32
     HIMAGELIST himl;
-    LPTASKBARLIST3 p_taskbl;
+    ITaskbarList3 *p_taskbl;
     UINT taskbar_wmsg;
     void createTaskBarButtons();
 #endif

diff --git a/modules/gui/qt4/main_interface_win32.cpp b/modules/gui/qt4/main_interface_win32.cpp
index 0c3b08cc6a45e66f96a4ae553f869362b254fd74..fdf5d69d95429b42222aff36cf77a7ccdccc432e 100644 (file)
--- a/modules/gui/qt4/main_interface_win32.cpp
+++ b/modules/gui/qt4/main_interface_win32.cpp
@@ -79,12 +79,12 @@ void MainInterface::createTaskBarButtons()
 
     CoInitialize( 0 );
 
-    if( S_OK == CoCreateInstance( &clsid_ITaskbarList,
+    if( S_OK == CoCreateInstance( CLSID_TaskbarList,
                 NULL, CLSCTX_INPROC_SERVER,
                 IID_ITaskbarList3,
                 (void **)&p_taskbl) )
     {
-        p_taskbl->vt->HrInit(p_taskbl);
+        p_taskbl->HrInit();
 
         if( (himl = ImageList_Create( 20, //cx
                         20, //cy
@@ -114,7 +114,7 @@ void MainInterface::createTaskBarButtons()
 
         // Define an array of two buttons. These buttons provide images through an
         // image list and also provide tooltips.
-        DWORD dwMask = THB_BITMAP | THB_FLAGS;
+        THUMBBUTTONMASK dwMask = THUMBBUTTONMASK(THB_BITMAP | THB_FLAGS);
 
         THUMBBUTTON thbButtons[3];
         thbButtons[0].dwMask = dwMask;
@@ -132,12 +132,12 @@ void MainInterface::createTaskBarButtons()
         thbButtons[2].iBitmap = 3;
         thbButtons[2].dwFlags = THBF_HIDDEN;
 
-        HRESULT hr = p_taskbl->vt->ThumbBarSetImageList(p_taskbl, winId(), himl );
+        HRESULT hr = p_taskbl->ThumbBarSetImageList(winId(), himl );
         if(S_OK != hr)
             msg_Err( p_intf, "ThumbBarSetImageList failed with error %08lx", hr );
         else
         {
-            hr = p_taskbl->vt->ThumbBarAddButtons(p_taskbl, winId(), 3, thbButtons);
+            hr = p_taskbl->ThumbBarAddButtons(winId(), 3, thbButtons);
             if(S_OK != hr)
                 msg_Err( p_intf, "ThumbBarAddButtons failed with error %08lx", hr );
         }
@@ -244,7 +244,7 @@ void MainInterface::changeThumbbarButtons( int i_status )
 
     // Define an array of three buttons. These buttons provide images through an
     // image list and also provide tooltips.
-    DWORD dwMask = THB_BITMAP | THB_FLAGS;
+    THUMBBUTTONMASK dwMask = THUMBBUTTONMASK(THB_BITMAP | THB_FLAGS);
 
     THUMBBUTTON thbButtons[3];
     //prev
@@ -285,7 +285,7 @@ void MainInterface::changeThumbbarButtons( int i_status )
         default:
             return;
     }
-    HRESULT hr =  p_taskbl->vt->ThumbBarUpdateButtons(p_taskbl, this->winId(), 3, thbButtons);
+    HRESULT hr =  p_taskbl->ThumbBarUpdateButtons(this->winId(), 3, thbButtons);
     if(S_OK != hr)
         msg_Err( p_intf, "ThumbBarUpdateButtons failed with error %08lx", hr );
 }

diff --git a/modules/video_output/msw/common.c b/modules/video_output/msw/common.c
index 97daadcda258bbde6d525c72b0ecd9c8bd12b413..d1d479a89664861765c4d0ae0afcbfcd60885eac 100644 (file)
--- a/modules/video_output/msw/common.c
+++ b/modules/video_output/msw/common.c
@@ -291,12 +291,12 @@ static void CommonChangeThumbnailClip(vout_display_t *vd, bool show)
     CoInitialize(0);
 
     void *ptr;
-    if (S_OK == CoCreateInstance(&clsid_ITaskbarList,
+    if (S_OK == CoCreateInstance(&CLSID_TaskbarList,
                                  NULL, CLSCTX_INPROC_SERVER,
                                  &IID_ITaskbarList3,
                                  &ptr)) {
-        LPTASKBARLIST3 taskbl = ptr;
-        taskbl->vt->HrInit(taskbl);
+        ITaskbarList3 *taskbl = ptr;
+        taskbl->lpVtbl->HrInit(taskbl);
 
         HWND hroot = GetAncestor(sys->hwnd,GA_ROOT);
         RECT relative;
@@ -310,11 +310,11 @@ static void CommonChangeThumbnailClip(vout_display_t *vd, bool show)
             relative.right  = video.right  - video.left + relative.left;
             relative.bottom = video.bottom - video.top  + relative.top - 25;
         }
-        if (S_OK != taskbl->vt->SetThumbnailClip(taskbl, hroot,
+        if (S_OK != taskbl->lpVtbl->SetThumbnailClip(taskbl, hroot,
                                                  show ? &relative : NULL))
             msg_Err(vd, "SetThumbNailClip failed");
 
-        taskbl->vt->Release(taskbl);
+        taskbl->lpVtbl->Release(taskbl);
     }
     CoUninitialize();
 #endif