96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
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/*++ BUILD Version: 0001
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*
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* WOW v1.0
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*
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* Copyright (c) 1991, Microsoft Corporation
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*
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* WMMALIAS.H
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* WOW32 16-bit handle alias support
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*
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* History:
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* Created Sept-1-1992 by Chandan Chauhan (ChandanC)
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* Modified 12-May-1992 by Mike Tricker (miketri) to add MultiMedia support
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--*/
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/* 16-bit handle format
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*
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* Bits 0 and 1 are always zero (potential compatibility requirement).
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* Note however that the macros below treat HASH_BITS as starting at bit
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* 0, for simplicity. We just shift the alias left two bits when we're
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* done. The actual number of low bits that are reserved is determined
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* by RES_BITS.
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*
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* Of the remaining 14 bits, the next HASH_BITS bits are the hash slot #
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* (relative to 0), followed by LIST_BITS bits containing the list slot #
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* (relative to 1). List slot is relative to 1 because some portion of
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* a valid handle must be non-zero; this is also why LIST_SLOTS contains
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* that extra "-1".
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*/
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#define RES_BITS 2
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#define HASH_BITS 6
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#define HASH_SLOTS (1 << HASH_BITS)
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#define HASH_MASK (HASH_SLOTS-1)
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#define MASK32(h32) ((INT)(h32))
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#define HASH32(h32) (MASK32(h32) & (HASH_SLOTS-1))
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#define LIST_BITS (16-RES_BITS-HASH_BITS)
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#define LIST_SLOTS ((1 << LIST_BITS) - 1)
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#define LIST_MASK (LIST_SLOTS << HASH_BITS)
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#define ALIAS_SLOTS 128 // must be a power of 2
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/* Class map entry
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*/
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#pragma pack(2)
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typedef struct _WCDM { /* wcd */
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struct _WCD *pwcdNext; // pointer to next wcd entry
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PSZ pszClass; // pointer to local copy of class name
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VPSZ vpszMenu; // pointer to original copy of menu name, if any
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HAND16 hModule16; // handle of owning module
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HAND16 hInst16; // 16-bit hInstance (wndclass16.hInstance)
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WORD nWindows; // # of windows in existence based on class
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VPWNDPROC vpfnWndProc; // 16-bit window proc address
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WORD wStyle; // Class Style bits
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} WCD, *PWCD, **PPWCD;
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#pragma pack()
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/* Handle map entry
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*/
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#pragma pack(2)
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typedef struct _HMAP { /* hm */
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struct _HMAP *phmNext; // pointer to next hmap entry
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HANDLE h32; // 32-bit handle
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HAND16 h16; // 16-bit handle
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HTASK16 htask16; // 16-bit handle of owning task
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INT iClass; // WOW class index
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DWORD dwStyle; // style flags (if handle to window)
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PWCD pwcd; // WOW class data pointer
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VPWNDPROC vpfnWndProc; // associated 16-bit function address
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VPWNDPROC vpfnDlgProc; // 16-bit dialog function
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} HMAP, *PHMAP, **PPHMAP;
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#pragma pack()
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/* Handle alias info
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*/
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typedef struct _HINFO { /* hi */
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PPHMAP pphmHash; // address of hash table
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#ifdef NEWALIAS
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PPHMAP pphmAlias; // address of alias table
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INT nAliasEntries; // size of alias table, in entries
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INT iAliasHint; // next (possibly) free slot in alias table
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#endif
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} HINFO, *PHINFO, **PPHINFO;
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PHMAP FindHMap32(HAND32 h32, PHINFO phi, INT iClass);
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PHMAP FindHMap16(HAND16 h16, PHINFO phi);
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VOID FreeHMap16(HAND16 h16, PHINFO phi);
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PSZ GetHMapNameM(PHINFO phi, INT iClass);
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