diff options
Diffstat (limited to 'generic/tk.h')
| -rw-r--r-- | generic/tk.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/generic/tk.h b/generic/tk.h index 9312235..d5f876e 100644 --- a/generic/tk.h +++ b/generic/tk.h @@ -266,10 +266,10 @@ typedef struct Tk_ObjCustomOption { * Computes number of bytes from beginning of structure to a given field. */ -#ifdef offsetof #define Tk_Offset(type, field) ((int) offsetof(type, field)) -#else -#define Tk_Offset(type, field) ((int) ((char *) &((type *) 0)->field)) +/* Workaround for platforms missing offsetof(), e.g. VC++ 6.0 */ +#ifndef offsetof +# define offsetof(type, field) ((size_t) ((char *) &((type *) 0)->field)) #endif /* |