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ddraw: Get rid of ICOM_VFIELD_MULTI_NAME and ICOM_VFIELD_OFFSET.

oldstable
Henri Verbeet 2009-01-21 09:56:14 +01:00 committed by Alexandre Julliard
parent 9a0c885e63
commit 772e56a2d8
1 changed files with 2 additions and 10 deletions
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12
dlls/ddraw/ddcomimpl.h
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@ -22,23 +22,15 @@
#include <stddef.h>
/* Generates the name for a vtable pointer for a given interface. */
/* The canonical name for a single interface is "lpVtbl". */
#define ICOM_VFIELD_MULTI_NAME(iface) iface##_vtbl
/* Returns the offset of a vtable pointer within an implementation object. */
#define ICOM_VFIELD_OFFSET(impltype, iface) \
offsetof(impltype, ICOM_VFIELD_MULTI_NAME(iface))
/* Given an interface pointer, returns the implementation pointer. */
#define ICOM_OBJECT(impltype, ifacename, ifaceptr) \
(impltype*)((ifaceptr) == NULL ? NULL \
: (char*)(ifaceptr) - ICOM_VFIELD_OFFSET(impltype,ifacename))
: (char*)(ifaceptr) - offsetof(impltype, ifacename##_vtbl))
#define ICOM_THIS_FROM(impltype, ifacename, ifaceptr) \
impltype* This = ICOM_OBJECT(impltype, ifacename, ifaceptr)
#define COM_INTERFACE_CAST(impltype, ifnamefrom, ifnameto, ifaceptr) \
((ifaceptr) ? (ifnameto *)&(((impltype *)((char *)(ifaceptr) \
- ICOM_VFIELD_OFFSET(impltype, ifnamefrom)))->ICOM_VFIELD_MULTI_NAME(ifnameto)) : NULL)
- offsetof(impltype, ifnamefrom##_vtbl)))->ifnameto##_vtbl) : NULL)
#endif /* _DDCOMIMPL_H_ */