739 lines
20 KiB
C
739 lines
20 KiB
C
/*++
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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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* WALIAS.C
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* WOW32 16-bit handle alias support
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*
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* History:
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* Created 27-Jan-1991 by Jeff Parsons (jeffpar)
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* Modified 12-May-1992 by Mike Tricker (miketri) to add MultiMedia support
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--*/
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#include "precomp.h"
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#pragma hdrstop
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MODNAME(walias.c);
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extern CRITICAL_SECTION gcsWOW;
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extern PTD gptdTaskHead;
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//BUGBUG - this must be removed once MM_MCISYSTEM_STRING is defined in MMSYSTEM.H.
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#ifndef MM_MCISYSTEM_STRING
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#define MM_MCISYSTEM_STRING 0x3CA
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#endif
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#ifdef DEBUG
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extern BOOL fSkipLog; // TRUE to temporarily skip certain logging
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#endif
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typedef struct _stdclass {
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LPSTR lpszClassName;
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ATOM aClassAtom;
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WNDPROC lpfnWndProc;
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INT iOrdinal;
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DWORD vpfnWndProc;
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} STDCLASS;
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// Some cool defines stolen from USERSRV.H
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#define MENUCLASS MAKEINTATOM(0x8000)
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#define DESKTOPCLASS MAKEINTATOM(0x8001)
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#define DIALOGCLASS MAKEINTATOM(0x8002)
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#define SWITCHWNDCLASS MAKEINTATOM(0x8003)
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#define ICONTITLECLASS MAKEINTATOM(0x8004)
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// See WARNING below!
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STDCLASS stdClasses[] = {
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NULL, 0, NULL, 0, 0, // WOWCLASS_UNKNOWN
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NULL, 0, NULL, 0, 0, // WOWCLASS_WIN16
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"BUTTON", 0, NULL, FUN_BUTTONWNDPROC, 0, // WOWCLASS_BUTTON,
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"COMBOBOX", 0, NULL, FUN_COMBOBOXCTLWNDPROC, 0, // WOWCLASS_COMBOBOX,
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"EDIT", 0, NULL, FUN_EDITWNDPROC, 0, // WOWCLASS_EDIT,
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"LISTBOX", 0, NULL, FUN_LBOXCTLWNDPROC, 0, // WOWCLASS_LISTBOX,
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"MDICLIENT", 0, NULL, FUN_MDICLIENTWNDPROC, 0, // WOWCLASS_MDICLIENT,
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"SCROLLBAR", 0, NULL, FUN_SBWNDPROC, 0, // WOWCLASS_SCROLLBAR,
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"STATIC", 0, NULL, FUN_STATICWNDPROC, 0, // WOWCLASS_STATIC,
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"#32769", (WORD)DESKTOPCLASS, NULL, FUN_DESKTOPWNDPROC, 0, // WOWCLASS_DESKTOP,
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"#32770", (WORD)DIALOGCLASS, NULL, FUN_DEFDLGPROCTHUNK, 0, // WOWCLASS_DIALOG,
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"#32772", (WORD)ICONTITLECLASS, NULL, FUN_TITLEWNDPROC, 0, // WOWCLASS_ICONTITLE,
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"#32768", (WORD)MENUCLASS, NULL, FUN_MENUWNDPROC, 0, // WOWCLASS_MENU,
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"#32771", (WORD)SWITCHWNDCLASS, NULL, 0, 0, // WOWCLASS_SWITCHWND,
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"COMBOLBOX", 0, NULL, FUN_LBOXCTLWNDPROC, 0, // WOWCLASS_COMBOLBOX
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};
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//
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// WARNING! The above sequence and values must be maintained otherwise the
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// table in WMSG16.C for message thunking must be changed. Same goes for
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// the #define's in WALIAS.H
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//
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// The above COMBOLBOX case is special because it is class that is
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// almost identical to a listbox. Therefore we lie about it.
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INT GetStdClassNumber(
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PSZ pszClass
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) {
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INT i;
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if ( HIWORD(pszClass) ) {
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// They passed us a string
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for ( i = WOWCLASS_BUTTON; i < NUMEL(stdClasses); i++ ) {
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if ( WOW32_stricmp(pszClass, stdClasses[i].lpszClassName) == 0 ) {
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return( i );
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}
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}
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} else {
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// They passed us an atom
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for ( i = WOWCLASS_BUTTON; i < NUMEL(stdClasses); i++ ) {
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if ( stdClasses[i].aClassAtom == 0 ) {
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// RegisterWindowMessage is an undocumented way of determining
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// an atom value in the context of the server-side heap.
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stdClasses[i].aClassAtom = (ATOM)RegisterWindowMessage(stdClasses[i].lpszClassName);
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}
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if ( (ATOM)LOWORD(pszClass) == stdClasses[i].aClassAtom ) {
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return( i );
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}
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}
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}
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return( WOWCLASS_WIN16 ); // private 16-bit class created by the app
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}
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// Returns a 32 window proc given a class index
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WNDPROC GetStdClassWndProc(
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DWORD iClass
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) {
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WNDPROC lpfn32;
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if ( iClass < WOWCLASS_WIN16 || iClass > WOWCLASS_MAX ) {
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WOW32ASSERT(FALSE);
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return( NULL );
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}
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lpfn32 = stdClasses[iClass].lpfnWndProc;
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if ( lpfn32 == NULL ) {
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WNDCLASS wc;
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BOOL f;
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f = GetClassInfo( NULL, stdClasses[iClass].lpszClassName, &wc );
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if ( f ) {
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VPVOID vp;
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DWORD UNALIGNED * lpdw;
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lpfn32 = wc.lpfnWndProc;
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stdClasses[iClass].lpfnWndProc = lpfn32;
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vp = GetStdClassThunkProc(iClass);
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vp = (VPVOID)((DWORD)vp - sizeof(DWORD)*3);
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GETVDMPTR( vp, sizeof(DWORD)*3, lpdw );
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WOW32ASSERT(*lpdw == SUBCLASS_MAGIC); // Are we editing the right stuff?
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if (!lpdw)
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*(lpdw+2) = (DWORD)lpfn32;
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FLUSHVDMCODEPTR( vp, sizeof(DWORD)*3, lpdw );
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FREEVDMPTR( lpdw );
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}
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}
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return( lpfn32 );
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}
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// Returns a 16 window proc thunk given a class index
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DWORD GetStdClassThunkProc(
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INT iClass
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) {
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DWORD dwResult;
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SHORT iOrdinal;
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PARM16 Parm16;
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if ( iClass < WOWCLASS_WIN16 || iClass > WOWCLASS_MAX ) {
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WOW32ASSERT(FALSE);
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return( 0 );
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}
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iOrdinal = (SHORT)stdClasses[iClass].iOrdinal;
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if ( iOrdinal == 0 ) {
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return( (DWORD)NULL );
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}
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// If we've already gotten this proc, then don't bother calling into 16-bit
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dwResult = stdClasses[iClass].vpfnWndProc;
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if ( dwResult == (DWORD)NULL ) {
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// Callback into the 16-bit world asking for the 16:16 address
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Parm16.SubClassProc.iOrdinal = iOrdinal;
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if (!CallBack16(RET_SUBCLASSPROC, &Parm16, (VPPROC)NULL,
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(PVPVOID)&dwResult)) {
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WOW32ASSERT(FALSE);
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return( 0 );
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}
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// Save it since it is a constant.
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stdClasses[iClass].vpfnWndProc = dwResult;
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}
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return( dwResult );
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}
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/*
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* PWC GetClassWOWWords(hInst, pszClass)
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* is a ***private*** API for WOW only. It returns a pointer to the
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* WOW Class structure in the server's window class structure.
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* This is similar to GetClassLong(hwnd32, GCL_WOWWORDS) (see FindPWC),
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* but in this case we don't have a hwnd32, we have the class name
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* and instance handle.
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*/
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PWC FindClass16(LPCSTR pszClass, HAND16 hInst)
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{
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register PWC pwc;
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pwc = (PWC)(pfnOut.pfnGetClassWOWWords)(HMODINST32(hInst), pszClass);
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WOW32WARNMSGF(
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pwc,
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("WOW32 warning: GetClassWOWWords('%s', %04x) returned NULL\n", pszClass, hInst)
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);
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return (pwc);
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}
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#ifdef DEBUG
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INT nAliases;
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INT iLargestListSlot;
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PSZ apszHandleClasses[] = {
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"Unknown", // WOWCLASS_UNKNOWN
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"Window", // WOWCLASS_WIN16
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"Button", // WOWCLASS_BUTTON
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"ComboBox", // WOWCLASS_COMBOBOX
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"Edit", // WOWCLASS_EDIT
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"ListBox", // WOWCLASS_LISTBOX
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"MDIClient", // WOWCLASS_MDICLIENT
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"Scrollbar", // WOWCLASS_SCROLLBAR
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"Static", // WOWCLASS_STATIC
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"Desktop", // WOWCLASS_DESKTOP
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"Dialog", // WOWCLASS_DIALOG
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"Menu", // WOWCLASS_MENU
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"IconTitle", // WOWCLASS_ICONTITLE
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"Accel", // WOWCLASS_ACCEL
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"Cursor", // WOWCLASS_CURSOR
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"Icon", // WOWCLASS_ICON
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"DC", // WOWCLASS_DC
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"Font", // WOWCLASS_FONT
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"MetaFile", // WOWCLASS_METAFILE
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"Region", // WOWCLASS_RGN
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"Bitmap", // WOWCLASS_BITMAP
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"Brush", // WOWCLASS_BRUSH
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"Palette", // WOWCLASS_PALETTE
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"Pen", // WOWCLASS_PEN
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"Object" // WOWCLASS_OBJECT
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};
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BOOL MessageNeedsThunking(UINT uMsg)
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{
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switch (uMsg) {
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case WM_CREATE:
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case WM_ACTIVATE:
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case WM_SETFOCUS:
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case WM_KILLFOCUS:
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case WM_SETTEXT:
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case WM_GETTEXT:
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case WM_ERASEBKGND:
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case WM_WININICHANGE:
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case WM_DEVMODECHANGE:
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case WM_ACTIVATEAPP:
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case WM_SETCURSOR:
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case WM_MOUSEACTIVATE:
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case WM_GETMINMAXINFO:
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case WM_ICONERASEBKGND:
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case WM_NEXTDLGCTL:
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case WM_DRAWITEM:
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case WM_MEASUREITEM:
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case WM_DELETEITEM:
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case WM_VKEYTOITEM:
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case WM_CHARTOITEM:
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case WM_SETFONT:
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case WM_GETFONT:
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case WM_QUERYDRAGICON:
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case WM_COMPAREITEM:
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case WM_OTHERWINDOWCREATED:
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case WM_OTHERWINDOWDESTROYED:
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case WM_COMMNOTIFY:
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case WM_WINDOWPOSCHANGING:
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case WM_WINDOWPOSCHANGED:
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case WM_NCCREATE:
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case WM_NCCALCSIZE:
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case WM_COMMAND:
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case WM_HSCROLL:
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case WM_VSCROLL:
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case WM_INITMENU:
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case WM_INITMENUPOPUP:
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case WM_MENUSELECT:
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case WM_MENUCHAR:
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case WM_ENTERIDLE:
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case WM_CTLCOLORMSGBOX:
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case WM_CTLCOLOREDIT:
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case WM_CTLCOLORLISTBOX:
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case WM_CTLCOLORBTN:
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case WM_CTLCOLORDLG:
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case WM_CTLCOLORSCROLLBAR:
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case WM_CTLCOLORSTATIC:
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case WM_PARENTNOTIFY:
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case WM_MDICREATE:
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case WM_MDIDESTROY:
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case WM_MDIACTIVATE:
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case WM_MDIGETACTIVE:
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case WM_MDISETMENU:
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case WM_RENDERFORMAT:
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case WM_PAINTCLIPBOARD:
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case WM_VSCROLLCLIPBOARD:
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case WM_SIZECLIPBOARD:
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case WM_ASKCBFORMATNAME:
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case WM_CHANGECBCHAIN:
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case WM_HSCROLLCLIPBOARD:
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case WM_PALETTEISCHANGING:
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case WM_PALETTECHANGED:
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case MM_JOY1MOVE:
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case MM_JOY2MOVE:
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case MM_JOY1ZMOVE:
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case MM_JOY2ZMOVE:
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case MM_JOY1BUTTONDOWN:
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case MM_JOY2BUTTONDOWN:
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case MM_JOY1BUTTONUP:
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case MM_JOY2BUTTONUP:
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case MM_MCINOTIFY:
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case MM_MCISYSTEM_STRING:
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case MM_WOM_OPEN:
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case MM_WOM_CLOSE:
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case MM_WOM_DONE:
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case MM_WIM_OPEN:
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case MM_WIM_CLOSE:
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case MM_WIM_DATA:
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case MM_MIM_OPEN:
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case MM_MIM_CLOSE:
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case MM_MIM_DATA:
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case MM_MIM_LONGDATA:
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case MM_MIM_ERROR:
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case MM_MIM_LONGERROR:
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case MM_MOM_OPEN:
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case MM_MOM_CLOSE:
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case MM_MOM_DONE:
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LOGDEBUG(LOG_IMPORTANT,
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("MessageNeedsThunking: WM_msg %04x is not thunked\n", uMsg));
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return TRUE;
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default:
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return FALSE;
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}
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}
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#endif
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PTD ThreadProcID32toPTD(DWORD dwThreadID, DWORD dwProcessID)
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{
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PTD ptd, ptdThis;
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PWOAINST pWOA;
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//
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// If we have active child instances of WinOldAp,
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// try to map the process ID of a child Win32 app
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// to the corresponding WinOldAp PTD.
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//
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ptdThis = CURRENTPTD();
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EnterCriticalSection(&ptdThis->csTD);
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pWOA = ptdThis->pWOAList;
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while (pWOA && pWOA->dwChildProcessID != dwProcessID) {
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pWOA = pWOA->pNext;
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}
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if (pWOA) {
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ptd = pWOA->ptdWOA;
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LeaveCriticalSection(&ptdThis->csTD);
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} else {
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LeaveCriticalSection(&ptdThis->csTD);
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//
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// We didn't find a WinOldAp PTD to return, see
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// if the thread ID matches one of our app threads.
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//
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EnterCriticalSection(&gcsWOW);
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ptd = gptdTaskHead;
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while (ptd && ptd->dwThreadID != dwThreadID) {
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ptd = ptd->ptdNext;
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}
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LeaveCriticalSection(&gcsWOW);
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}
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return ptd;
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}
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PTD Htask16toPTD(
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HTASK16 htask16
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) {
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PTD ptd;
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EnterCriticalSection(&gcsWOW);
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ptd = gptdTaskHead;
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while(ptd) {
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if ( ptd->htask16 == htask16 ) {
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break;
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}
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ptd = ptd->ptdNext;
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}
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LeaveCriticalSection(&gcsWOW);
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return ptd;
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}
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HTASK16 ThreadID32toHtask16(
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DWORD ThreadID32
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) {
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PTD ptd;
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HTASK16 htask16;
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if ( ThreadID32 == 0 ) {
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WOW32ASSERTMSG(ThreadID32, "WOW::ThreadID32tohTask16: Thread ID is 0\n");
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htask16 = 0;
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} else {
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ptd = ThreadProcID32toPTD( ThreadID32, (DWORD)-1 );
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if ( ptd ) {
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// Good, its one of our wow threads.
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htask16 = ptd->htask16;
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} else {
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// Nope, its is some other 32-bit thread
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htask16 = FindHtaskAlias( ThreadID32 );
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if ( htask16 == 0 ) {
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//
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// See the comment in WOLE2.C for a nice description
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//
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htask16 = AddHtaskAlias( ThreadID32 );
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}
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}
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}
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return htask16;
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}
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DWORD Htask16toThreadID32(
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HTASK16 htask16
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) {
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if ( htask16 == 0 ) {
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return( 0 );
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}
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if ( ISTASKALIAS(htask16) ) {
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return( GetHtaskAlias(htask16,NULL) );
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} else {
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return( THREADID32(htask16) );
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}
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}
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//***************************************************************************
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// GetGCL_HMODULE - returns the valid hmodule if the window corresponds to
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// a 16bit class else returns the hmodule of 16bit user.exe
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// if the window is of a standard class.
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//
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// These cases are required for compatibility sake.
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// apps like VirtualMonitor, hDC etc depend on such behaviour.
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// - Nanduri
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//***************************************************************************
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WORD gUser16hInstance = 0;
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ULONG GetGCL_HMODULE(HWND hwnd)
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{
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ULONG ul;
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PTD ptd;
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PWOAINST pWOA;
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DWORD dwProcessID;
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ul = (ULONG)GetClassLong(hwnd, GCL_HMODULE);
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//
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// hMod32 = 0xZZZZ0000
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//
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if (ul != 0 && LOWORD(ul) == 0) {
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//
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// If we have active WinOldAp children, see if this window
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// belongs to a Win32 process spawned by one of the
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// active winoldap's. If it is, return the hmodule
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// of the corresponding winoldap. Otherwise we
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// return user.exe's hinstance (why not hmodule?)
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//
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dwProcessID = (DWORD)-1;
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GetWindowThreadProcessId(hwnd, &dwProcessID);
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ptd = CURRENTPTD();
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EnterCriticalSection(&ptd->csTD);
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pWOA = ptd->pWOAList;
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while (pWOA && pWOA->dwChildProcessID != dwProcessID) {
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pWOA = pWOA->pNext;
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}
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if (pWOA) {
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ul = pWOA->ptdWOA->hMod16;
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LOGDEBUG(LOG_ALWAYS, ("WOW32 GetClassLong(0x%x, GWW_HMODULE) returning 0x%04x\n",
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hwnd, ul));
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} else {
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ul = (ULONG) gUser16hInstance;
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WOW32ASSERT(ul);
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}
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|
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LeaveCriticalSection(&ptd->csTD);
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}
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else {
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ul = (ULONG)GETHMOD16(ul); // 32-bit hmod is HMODINST32
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}
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return ul;
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}
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//
|
|
// EXPORTED handle mapping functions. WOW32 code should use the
|
|
// macros defined in walias.h -- these functions are for use by
|
|
// third-party 32-bit code running in WOW, for example called
|
|
// using generic thunks from WOW-specific 16-bit code.
|
|
//
|
|
|
|
HANDLE WOWHandle32 (WORD h16, WOW_HANDLE_TYPE htype)
|
|
{
|
|
switch (htype) {
|
|
case WOW_TYPE_HWND:
|
|
return HWND32(h16);
|
|
case WOW_TYPE_HMENU:
|
|
return HMENU32(h16);
|
|
case WOW_TYPE_HDWP:
|
|
return HDWP32(h16);
|
|
case WOW_TYPE_HDROP:
|
|
return HDROP32(h16);
|
|
case WOW_TYPE_HDC:
|
|
return HDC32(h16);
|
|
case WOW_TYPE_HFONT:
|
|
return HFONT32(h16);
|
|
case WOW_TYPE_HMETAFILE:
|
|
return HMETA32(h16);
|
|
case WOW_TYPE_HRGN:
|
|
return HRGN32(h16);
|
|
case WOW_TYPE_HBITMAP:
|
|
return HBITMAP32(h16);
|
|
case WOW_TYPE_HBRUSH:
|
|
return HBRUSH32(h16);
|
|
case WOW_TYPE_HPALETTE:
|
|
return HPALETTE32(h16);
|
|
case WOW_TYPE_HPEN:
|
|
return HPEN32(h16);
|
|
case WOW_TYPE_HACCEL:
|
|
return HACCEL32(h16);
|
|
case WOW_TYPE_HTASK:
|
|
return (HANDLE)HTASK32(h16);
|
|
case WOW_TYPE_FULLHWND:
|
|
return (HANDLE)FULLHWND32(h16);
|
|
default:
|
|
return(INVALID_HANDLE_VALUE);
|
|
}
|
|
}
|
|
|
|
WORD WOWHandle16 (HANDLE h32, WOW_HANDLE_TYPE htype)
|
|
{
|
|
switch (htype) {
|
|
case WOW_TYPE_HWND:
|
|
return GETHWND16(h32);
|
|
case WOW_TYPE_HMENU:
|
|
return GETHMENU16(h32);
|
|
case WOW_TYPE_HDWP:
|
|
return GETHDWP16(h32);
|
|
case WOW_TYPE_HDROP:
|
|
return GETHDROP16(h32);
|
|
case WOW_TYPE_HDC:
|
|
return GETHDC16(h32);
|
|
case WOW_TYPE_HFONT:
|
|
return GETHFONT16(h32);
|
|
case WOW_TYPE_HMETAFILE:
|
|
return GETHMETA16(h32);
|
|
case WOW_TYPE_HRGN:
|
|
return GETHRGN16(h32);
|
|
case WOW_TYPE_HBITMAP:
|
|
return GETHBITMAP16(h32);
|
|
case WOW_TYPE_HBRUSH:
|
|
return GETHBRUSH16(h32);
|
|
case WOW_TYPE_HPALETTE:
|
|
return GETHPALETTE16(h32);
|
|
case WOW_TYPE_HPEN:
|
|
return GETHPEN16(h32);
|
|
case WOW_TYPE_HACCEL:
|
|
return GETHACCEL16(h32);
|
|
case WOW_TYPE_HTASK:
|
|
return GETHTASK16(h32);
|
|
default:
|
|
return(0xffff);
|
|
}
|
|
}
|
|
|
|
PVOID gpGdiHandleInfo = (PVOID)-1;
|
|
|
|
//WARNING: This structure must match ENTRY in ntgdi\inc\hmgshare.h
|
|
|
|
typedef struct _ENTRYWOW
|
|
{
|
|
LONG l1;
|
|
LONG l2;
|
|
USHORT FullUnique;
|
|
USHORT us1;
|
|
LONG l3;
|
|
} ENTRYWOW, *PENTRYWOW;
|
|
|
|
//
|
|
// this routine converts a 16bit GDI handle to a 32bit handle. There
|
|
// is no need to do any validation on the handle since the 14bit space
|
|
// for handles ignoring the low two bits is completely contained in the
|
|
// valid 32bit handle space.
|
|
//
|
|
|
|
HANDLE hConvert16to32(int h16)
|
|
{
|
|
ULONG h32;
|
|
int i = h16 >> 2;
|
|
|
|
h32 = i | (ULONG)(((PENTRYWOW)gpGdiHandleInfo)[i].FullUnique) << 16;
|
|
|
|
return((HANDLE)h32);
|
|
}
|
|
|
|
|
|
// Implemented as temporary fix for Whistler Bug #435401
|
|
// Should be fixed for Blackcomb or sooner
|
|
extern HANDLE hmodWOW32;
|
|
|
|
HAND16 hConvert32to16(DWORD h32)
|
|
{
|
|
PARM16 Parm16;
|
|
VPVOID vp = 0;
|
|
|
|
// see if handle is over 14-bits
|
|
if(LOWORD(h32) > 0x00003FFF) {
|
|
char szErrorMessage[512];
|
|
char szTitle[512];
|
|
char szModName[9];
|
|
PTDB pTDB;
|
|
|
|
pTDB = (PVOID)SEGPTR(CURRENTPTD()->htask16,0);
|
|
|
|
RtlCopyMemory(szModName, pTDB->TDB_ModName, sizeof(szModName)-1);
|
|
szModName[sizeof(szModName)-1] = 0;
|
|
if (!LoadString(hmodWOW32, iszApplication,
|
|
szTitle, sizeof(szTitle)/sizeof(CHAR)))
|
|
{
|
|
szTitle[0] = 0;
|
|
}
|
|
strcat(szTitle, szModName);
|
|
|
|
LoadString(hmodWOW32,
|
|
iszExceedGDIHandleLimit,
|
|
szErrorMessage,
|
|
sizeof szErrorMessage);
|
|
|
|
// The GDI32 handle allocation has gone over the 16K threshhold
|
|
// This thread is toast.
|
|
WOWSysErrorBox(szTitle, szErrorMessage, SEB_OK | SEB_DEFBUTTON, 0, 0);
|
|
|
|
LOGDEBUG(LOG_ALWAYS,
|
|
("GDI32 handle limit exceeded for Task %04X \n",
|
|
CURRENTPTD()->htask16));
|
|
|
|
CallBack16(RET_FORCETASKEXIT, &Parm16, 0, &vp);
|
|
|
|
// this should never return
|
|
return(0);
|
|
}
|
|
|
|
// everything is hunky dory
|
|
return((HAND16)(((DWORD) (h32)) << 2));
|
|
}
|
|
|
|
// We probably don't need to worry about this buffer being too small since we're
|
|
// really only interested in the predefined standard classes which tend to
|
|
// be rather short-named.
|
|
#define MAX_CLASSNAME_LEN 64
|
|
|
|
// There is a time frame (from when an app calls CreateWindow until USER32 gets
|
|
// a message at one of its WndProc's for the window - see FritzS) during which
|
|
// the fnid (class type) can't be set officially for the window. If the
|
|
// GETICLASS macro is invoked during this period, it will be unable to find the
|
|
// iClass for windows created on any of the standard control classes using the
|
|
// fast fnid index method (see walias.h). Once the time frame is passed, the
|
|
// fast fnid method will work fine for these windows.
|
|
//
|
|
// This is manifested in apps that set CBT hooks and try to subclass the
|
|
// standard classes while in their hook proc. See bug #143811.
|
|
|
|
INT GetIClass(PWW pww, HWND hwnd)
|
|
{
|
|
INT iClass;
|
|
DWORD dwClassAtom;
|
|
|
|
// if it is a standard class
|
|
if(((pww->fnid & 0xfff) >= FNID_START) &&
|
|
((pww->fnid & 0xfff) <= FNID_END)) {
|
|
|
|
// return the class id for this initialized window
|
|
iClass = pfnOut.aiWowClass[( pww->fnid & 0xfff) - FNID_START];
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
iClass = WOWCLASS_WIN16; // default return: app private class
|
|
|
|
dwClassAtom = GetClassLong(hwnd, GCW_ATOM);
|
|
|
|
if(dwClassAtom) {
|
|
iClass = GetStdClassNumber((PSZ)dwClassAtom);
|
|
}
|
|
}
|
|
|
|
return(iClass);
|
|
}
|
|
|