Michael Stefaniuc : shell32: Use FIELD_OFFSET instead of hand coding its functionality.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 3591663ccafb3991f747b1ce8ef9e2a2a4f2465c
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=3591663ccafb3991f747b1ce8e...

Author: Michael Stefaniuc 
Date:   Wed Nov  5 10:17:13 2008 +0100

shell32: Use FIELD_OFFSET instead of hand coding its functionality.

---

dlls/shell32/shfldr_netplaces.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/shell32/shfldr_netplaces.c b/dlls/shell32/shfldr_netplaces.c
index d0e9833..c661c51 100644
--- a/dlls/shell32/shfldr_netplaces.c
+++ b/dlls/shell32/shfldr_netplaces.c
@@ -66,8 +66,8 @@ static const IShellFolder2Vtbl vt_ShellFolder2;
 static const IPersistFolder2Vtbl vt_NP_PersistFolder2;

-#define _IPersistFolder2_Offset ((int)(&(((IGenericSFImpl*)0)->lpVtblPersistFolder2)))
-#define _ICOM_THIS_From_IPersistFolder2(class, name) class* This = (class*)(((char*)name)-_IPersistFolder2_Offset);
+#define _ICOM_THIS_From_IPersistFolder2(class, name) class* This = \
+    (class*)(((char*)name) - FIELD_OFFSET(IGenericSFImpl, lpVtblPersistFolder2))

#define _IUnknown_(This)	(IUnknown*)&(This->lpVtbl)
 #define _IShellFolder_(This)	(IShellFolder*)&(This->lpVtbl)