windows/class.c

   1 /*
   2  * Window classes functions
   3  *
   4  * Copyright 1993, 1996 Alexandre Julliard
   5  *           1998 Juergen Schmied (jsch)
   6  *
   7  * FIXME: In win32 all classes are local. They are registered at
   8  *        program start. Processes CANNOT share classes. (Source: some
   9  *        win31->NT migration book)
  10  *
  11  * FIXME: There seems to be a general problem with hInstance in WINE
  12  *   classes are getting registered with wrong hInstance.
  13  */
  14
  15 #include "config.h"
  16 #include "wine/port.h"
  17
  18 #include <stdlib.h>
  19 #include <string.h>
  20
  21 #include "wine/winbase16.h"
  22 #include "winerror.h"
  23 #include "windef.h"
  24 #include "wingdi.h"
  25 #include "wine/winuser16.h"
  26 #include "wine/unicode.h"
  27 #include "win.h"
  28 #include "user.h"
  29 #include "controls.h"
  30 #include "dce.h"
  31 #include "winproc.h"
  32 #include "debugtools.h"
  33
  34 DEFAULT_DEBUG_CHANNEL(class);
  35
  36 typedef struct tagCLASS
  37 {
  38     struct tagCLASS *next;          /* Next class */
  39     struct tagCLASS *prev;          /* Prev class */
  40     UINT             cWindows;      /* Count of existing windows */
  41     UINT             style;         /* Class style */
  42     HWINDOWPROC      winprocA;      /* Window procedure (ASCII) */
  43     HWINDOWPROC      winprocW;      /* Window procedure (Unicode) */
  44     INT              cbClsExtra;    /* Class extra bytes */
  45     INT              cbWndExtra;    /* Window extra bytes */
  46     LPWSTR           menuName;      /* Default menu name (Unicode followed by ASCII) */
  47     SEGPTR           segMenuName;   /* Default menu name as SEGPTR */
  48     struct tagDCE   *dce;           /* Class DCE (if CS_CLASSDC) */
  49     HINSTANCE        hInstance;     /* Module that created the task */
  50     HICON            hIcon;         /* Default icon */
  51     HICON            hIconSm;       /* Default small icon */
  52     HCURSOR          hCursor;       /* Default cursor */
  53     HBRUSH           hbrBackground; /* Default background */
  54     ATOM             atomName;      /* Name of the class */
  55 } CLASS;
  56
  57 static CLASS *firstClass;
  58
  59 /***********************************************************************
  60  *           get_class_ptr
  61  */
  62 static CLASS *get_class_ptr( HWND hwnd, BOOL write_access )
  63 {
  64     WND *ptr = WIN_GetPtr( hwnd );
  65
  66     if (ptr)
  67     {
  68         if (ptr != WND_OTHER_PROCESS) return ptr->class;
  69         if (IsWindow( hwnd )) /* check other processes */
  70         {
  71             if (write_access)
  72             {
  73                 /* modifying classes in other processes is not allowed */
  74                 SetLastError( ERROR_ACCESS_DENIED );
  75                 return NULL;
  76             }
  77             FIXME( "reading from class of other process window %04x\n", hwnd );
  78             /* DbgBreakPoint(); */
  79         }
  80     }
  81     SetLastError( ERROR_INVALID_WINDOW_HANDLE );
  82     return NULL;
  83 }
  84
  85
  86 /***********************************************************************
  87  *           release_class_ptr
  88  */
  89 inline static void release_class_ptr( CLASS *ptr )
  90 {
  91     USER_Unlock();
  92 }
  93
  94
  95 /***********************************************************************
  96  *           CLASS_GetProc
  97  *
  98  * Get the class winproc for a given proc type
  99  */
 100 static WNDPROC16 CLASS_GetProc( CLASS *classPtr, WINDOWPROCTYPE type )
 101 {
 102     HWINDOWPROC proc = classPtr->winprocA;
 103
 104     if (classPtr->winprocW)
 105     {
 106         /* if we have a Unicode proc, use it if we have no ASCII proc
 107          * or if we have both and Unicode was requested
 108          */
 109         if (!proc || type == WIN_PROC_32W) proc = classPtr->winprocW;
 110     }
 111     return WINPROC_GetProc( proc, type );
 112 }
 113
 114
 115 /***********************************************************************
 116  *           CLASS_SetProc
 117  *
 118  * Set the class winproc for a given proc type.
 119  * Returns the previous window proc.
 120  */
 121 static WNDPROC16 CLASS_SetProc( CLASS *classPtr, WNDPROC newproc, WINDOWPROCTYPE type )
 122 {
 123     HWINDOWPROC *proc = &classPtr->winprocA;
 124     WNDPROC16 ret;
 125
 126     if (classPtr->winprocW)
 127     {
 128         /* if we have a Unicode proc, use it if we have no ASCII proc
 129          * or if we have both and Unicode was requested
 130          */
 131         if (!*proc || type == WIN_PROC_32W) proc = &classPtr->winprocW;
 132     }
 133     ret = WINPROC_GetProc( *proc, type );
 134     WINPROC_SetProc( proc, (HWINDOWPROC)newproc, type, WIN_PROC_CLASS );
 135     /* now free the one that we didn't set */
 136     if (classPtr->winprocA && classPtr->winprocW)
 137     {
 138         if (proc == &classPtr->winprocA)
 139         {
 140             WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
 141             classPtr->winprocW = 0;
 142         }
 143         else
 144         {
 145             WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
 146             classPtr->winprocA = 0;
 147         }
 148     }
 149     return ret;
 150 }
 151
 152
 153 /***********************************************************************
 154  *           CLASS_GetMenuNameA
 155  *
 156  * Get the menu name as a ASCII string.
 157  */
 158 inline static LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
 159 {
 160     if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
 161     return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
 162 }
 163
 164
 165 /***********************************************************************
 166  *           CLASS_GetMenuName16
 167  *
 168  * Get the menu name as a SEGPTR.
 169  */
 170 inline static SEGPTR CLASS_GetMenuName16( CLASS *classPtr )
 171 {
 172     if (!HIWORD(classPtr->menuName)) return (SEGPTR)classPtr->menuName;
 173     if (!classPtr->segMenuName)
 174         classPtr->segMenuName = MapLS( CLASS_GetMenuNameA(classPtr) );
 175     return classPtr->segMenuName;
 176 }
 177
 178
 179 /***********************************************************************
 180  *           CLASS_GetMenuNameW
 181  *
 182  * Get the menu name as a Unicode string.
 183  */
 184 inline static LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
 185 {
 186     return classPtr->menuName;
 187 }
 188
 189
 190 /***********************************************************************
 191  *           CLASS_SetMenuNameA
 192  *
 193  * Set the menu name in a class structure by copying the string.
 194  */
 195 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
 196 {
 197     UnMapLS( classPtr->segMenuName );
 198     classPtr->segMenuName = 0;
 199     if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
 200     if (HIWORD(name))
 201     {
 202         DWORD lenA = strlen(name) + 1;
 203         DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
 204         classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
 205         MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
 206         memcpy( classPtr->menuName + lenW, name, lenA );
 207     }
 208     else classPtr->menuName = (LPWSTR)name;
 209 }
 210
 211
 212 /***********************************************************************
 213  *           CLASS_SetMenuNameW
 214  *
 215  * Set the menu name in a class structure by copying the string.
 216  */
 217 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
 218 {
 219     UnMapLS( classPtr->segMenuName );
 220     classPtr->segMenuName = 0;
 221     if (HIWORD(classPtr->menuName)) HeapFree( GetProcessHeap(), 0, classPtr->menuName );
 222     if (HIWORD(name))
 223     {
 224         DWORD lenW = strlenW(name) + 1;
 225         DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
 226         classPtr->menuName = HeapAlloc( GetProcessHeap(), 0, lenA + lenW*sizeof(WCHAR) );
 227         memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
 228         WideCharToMultiByte( CP_ACP, 0, name, lenW,
 229                              (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
 230     }
 231     else classPtr->menuName = (LPWSTR)name;
 232 }
 233
 234
 235 /***********************************************************************
 236  *           CLASS_FreeClass
 237  *
 238  * Free a class structure.
 239  */
 240 static BOOL CLASS_FreeClass( CLASS *classPtr )
 241 {
 242     TRACE("%p\n", classPtr);
 243
 244     /* Check if we can remove this class */
 245
 246     if (classPtr->cWindows > 0)
 247     {
 248         SetLastError( ERROR_CLASS_HAS_WINDOWS );
 249         return FALSE;
 250     }
 251
 252     /* Remove the class from the linked list */
 253
 254     if (classPtr->next) classPtr->next->prev = classPtr->prev;
 255     if (classPtr->prev) classPtr->prev->next = classPtr->next;
 256     else firstClass = classPtr->next;
 257
 258     /* Delete the class */
 259
 260     if (classPtr->dce) DCE_FreeDCE( classPtr->dce );
 261     if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
 262         DeleteObject( classPtr->hbrBackground );
 263     GlobalDeleteAtom( classPtr->atomName );
 264     WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
 265     WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
 266     UnMapLS( classPtr->segMenuName );
 267     HeapFree( GetProcessHeap(), 0, classPtr->menuName );
 268     HeapFree( GetProcessHeap(), 0, classPtr );
 269     return TRUE;
 270 }
 271
 272
 273 /***********************************************************************
 274  *           CLASS_FreeModuleClasses
 275  */
 276 void CLASS_FreeModuleClasses( HMODULE16 hModule )
 277 {
 278     CLASS *ptr, *next;
 279
 280     TRACE("0x%08x\n", hModule);
 281
 282     USER_Lock();
 283     for (ptr = firstClass; ptr; ptr = next)
 284     {
 285         next = ptr->next;
 286         if (ptr->hInstance == hModule) CLASS_FreeClass( ptr );
 287     }
 288     USER_Unlock();
 289 }
 290
 291
 292 /***********************************************************************
 293  *           CLASS_FindClassByAtom
 294  *
 295  * Return a pointer to the class.
 296  * hinstance has been normalized by the caller.
 297  *
 298  * NOTES
 299  *  980805 a local class will be found now if registred with hInst=0
 300  *  and looed up with a hInst!=0. msmoney does it (jsch)
 301  *
 302  *  Local class registered with a USER instance handle are found as if
 303  *  they were global classes.
 304  */
 305 static CLASS *CLASS_FindClassByAtom( ATOM atom, HINSTANCE hinstance )
 306 {
 307     CLASS * class, *tclass = 0, *user_class = 0;
 308     HINSTANCE16 hUser = GetModuleHandle16("USER");
 309
 310     TRACE("0x%08x 0x%08x\n", atom, hinstance);
 311
 312     /* First search task-specific classes */
 313
 314     for (class = firstClass; (class); class = class->next)
 315     {
 316         if (class->style & CS_GLOBALCLASS) continue;
 317         if (class->atomName == atom)
 318         {
 319             if (hinstance==class->hInstance || hinstance==0xffff)
 320             {
 321                 TRACE("-- found local %p\n", class);
 322                 return class;
 323             }
 324             if (class->hInstance == 0) tclass = class;
 325             else if(class->hInstance == hUser)
 326             {
 327                 user_class = class;
 328             }
 329         }
 330     }
 331
 332     /* Then search global classes */
 333
 334     for (class = firstClass; (class); class = class->next)
 335     {
 336         if (!(class->style & CS_GLOBALCLASS)) continue;
 337         if (class->atomName == atom)
 338         {
 339             TRACE("-- found global %p\n", class);
 340             return class;
 341         }
 342     }
 343
 344     /* Check if there was a local class registered with USER */
 345     if( user_class )
 346     {
 347         TRACE("--found local USER class %p\n", user_class);
 348         return user_class;
 349     }
 350
 351     /* Then check if there was a local class with hInst=0*/
 352     if ( tclass )
 353     {
 354         WARN("-- found local Class registred with hInst=0\n");
 355         return tclass;
 356     }
 357
 358     TRACE("-- not found\n");
 359     return 0;
 360 }
 361
 362
 363 /***********************************************************************
 364  *           CLASS_RegisterClass
 365  *
 366  * The real RegisterClass() functionality.
 367  */
 368 static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance,
 369                                    DWORD style, INT classExtra, INT winExtra )
 370 {
 371     CLASS *classPtr;
 372
 373     TRACE("atom=0x%x hinst=0x%x style=0x%lx clExtr=0x%x winExtr=0x%x\n",
 374           atom, hInstance, style, classExtra, winExtra );
 375
 376    /* Check if a class with this name already exists */
 377     classPtr = CLASS_FindClassByAtom( atom, hInstance );
 378     if (classPtr)
 379     {
 380         /* Class can be created only if it is local and */
 381         /* if the class with the same name is global.   */
 382
 383         if ((style & CS_GLOBALCLASS) || !(classPtr->style & CS_GLOBALCLASS))
 384         {
 385             SetLastError( ERROR_CLASS_ALREADY_EXISTS );
 386             return NULL;
 387         }
 388     }
 389
 390     /* Fix the extra bytes value */
 391
 392     if (classExtra < 0) classExtra = 0;
 393     else if (classExtra > 40)  /* Extra bytes are limited to 40 in Win32 */
 394         WARN("Class extra bytes %d is > 40\n", classExtra);
 395     if (winExtra < 0) winExtra = 0;
 396     else if (winExtra > 40)    /* Extra bytes are limited to 40 in Win32 */
 397         WARN("Win extra bytes %d is > 40\n", winExtra );
 398
 399     /* Create the class */
 400
 401     classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
 402     if (!classPtr) return NULL;
 403     classPtr->style       = style;
 404     classPtr->cbWndExtra  = winExtra;
 405     classPtr->cbClsExtra  = classExtra;
 406     classPtr->hInstance   = hInstance;
 407     classPtr->atomName    = atom;
 408     classPtr->dce         = (style & CS_CLASSDC) ? DCE_AllocDCE( 0, DCE_CLASS_DC ) : NULL;
 409
 410     /* Other non-null values must be set by caller */
 411
 412     if ((classPtr->next = firstClass)) firstClass->prev = classPtr;
 413     firstClass = classPtr;
 414     return classPtr;
 415 }
 416
 417
 418 /***********************************************************************
 419  *           CLASS_UnregisterClass
 420  *
 421  * The real UnregisterClass() functionality.
 422  */
 423 static BOOL CLASS_UnregisterClass( ATOM atom, HINSTANCE hInstance )
 424 {
 425     CLASS *classPtr;
 426     BOOL ret = FALSE;
 427
 428     USER_Lock();
 429     if (atom &&
 430         (classPtr = CLASS_FindClassByAtom( atom, hInstance )) &&
 431         (!hInstance || classPtr->hInstance == hInstance))
 432     {
 433         ret = CLASS_FreeClass( classPtr );
 434     }
 435     else SetLastError( ERROR_CLASS_DOES_NOT_EXIST );
 436
 437     USER_Unlock();
 438     return ret;
 439 }
 440
 441
 442 /***********************************************************************
 443  *           CLASS_RegisterBuiltinClass
 444  *
 445  * Register a builtin control class.
 446  * This allows having both ASCII and Unicode winprocs for the same class.
 447  */
 448 ATOM CLASS_RegisterBuiltinClass( const struct builtin_class_descr *descr )
 449 {
 450     ATOM atom;
 451     CLASS *classPtr;
 452
 453     if (!(atom = GlobalAddAtomA( descr->name ))) return 0;
 454
 455     if (!(classPtr = CLASS_RegisterClass( atom, 0, descr->style, 0, descr->extra )))
 456     {
 457         GlobalDeleteAtom( atom );
 458         return 0;
 459     }
 460
 461     classPtr->hCursor       = LoadCursorA( 0, descr->cursor );
 462     classPtr->hbrBackground = descr->brush;
 463
 464     if (descr->procA) WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)descr->procA,
 465                                        WIN_PROC_32A, WIN_PROC_CLASS );
 466     if (descr->procW) WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)descr->procW,
 467                                        WIN_PROC_32W, WIN_PROC_CLASS );
 468     return atom;
 469 }
 470
 471
 472 /***********************************************************************
 473  *           CLASS_AddWindow
 474  *
 475  * Add a new window using this class, and return the necessary
 476  * information for creating the window.
 477  */
 478 CLASS *CLASS_AddWindow( ATOM atom, HINSTANCE inst, WINDOWPROCTYPE type,
 479                         INT *winExtra, WNDPROC *winproc, DWORD *style, struct tagDCE **dce )
 480 {
 481     CLASS *class;
 482     if (type == WIN_PROC_16) inst = GetExePtr(inst);
 483
 484     if (!(class = CLASS_FindClassByAtom( atom, inst ))) return NULL;
 485     class->cWindows++;
 486
 487     if (type == WIN_PROC_32W)
 488     {
 489         if (!(*winproc = class->winprocW)) *winproc = class->winprocA;
 490     }
 491     else
 492     {
 493         if (!(*winproc = class->winprocA)) *winproc = class->winprocW;
 494     }
 495     *winExtra = class->cbWndExtra;
 496     *style = class->style;
 497     *dce = class->dce;
 498     return class;
 499 }
 500
 501
 502 /***********************************************************************
 503  *           CLASS_RemoveWindow
 504  *
 505  * Remove a window from the class window count.
 506  */
 507 void CLASS_RemoveWindow( CLASS *cls )
 508 {
 509     if (cls && cls->cWindows) cls->cWindows--;
 510 }
 511
 512
 513 /***********************************************************************
 514  *              RegisterClass (USER.57)
 515  */
 516 ATOM WINAPI RegisterClass16( const WNDCLASS16 *wc )
 517 {
 518     ATOM atom;
 519     CLASS *classPtr;
 520     int iSmIconWidth, iSmIconHeight;
 521     HINSTANCE16 hInstance=GetExePtr(wc->hInstance);
 522
 523     if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
 524     if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
 525                                           wc->cbClsExtra, wc->cbWndExtra )))
 526     {
 527         GlobalDeleteAtom( atom );
 528         return 0;
 529     }
 530
 531     TRACE("atom=%04x wndproc=%08lx hinst=%04x "
 532                  "bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
 533                    atom, (DWORD)wc->lpfnWndProc, hInstance,
 534                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 535                    wc->cbWndExtra, classPtr,
 536                    HIWORD(wc->lpszClassName) ?
 537                        (char *)MapSL(wc->lpszClassName) : "" );
 538
 539     iSmIconWidth  = GetSystemMetrics(SM_CXSMICON);
 540     iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
 541
 542     classPtr->hIcon         = wc->hIcon;
 543     classPtr->hIconSm       = CopyImage(wc->hIcon, IMAGE_ICON,
 544                                         iSmIconWidth, iSmIconHeight,
 545                                         LR_COPYFROMRESOURCE);
 546     classPtr->hCursor       = wc->hCursor;
 547     classPtr->hbrBackground = wc->hbrBackground;
 548
 549     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 550                      WIN_PROC_16, WIN_PROC_CLASS );
 551     CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
 552
 553     return atom;
 554 }
 555
 556
 557 /***********************************************************************
 558  *              RegisterClassA (USER32.@)
 559  * RETURNS
 560  *      >0: Unique identifier
 561  *      0: Failure
 562  */
 563 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
 564 {
 565     ATOM atom;
 566     int iSmIconWidth, iSmIconHeight;
 567     CLASS *classPtr;
 568
 569     if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
 570
 571     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 572                                           wc->cbClsExtra, wc->cbWndExtra )))
 573     {
 574         GlobalDeleteAtom( atom );
 575         return 0;
 576     }
 577
 578     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
 579                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 580                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 581                    wc->cbWndExtra, classPtr,
 582                    HIWORD(wc->lpszClassName) ? wc->lpszClassName : "" );
 583
 584     iSmIconWidth  = GetSystemMetrics(SM_CXSMICON);
 585     iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
 586
 587     classPtr->hIcon         = wc->hIcon;
 588     classPtr->hIconSm       = CopyImage(wc->hIcon, IMAGE_ICON,
 589                                         iSmIconWidth, iSmIconHeight,
 590                                         LR_COPYFROMRESOURCE);
 591     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 592     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 593
 594     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 595                      WIN_PROC_32A, WIN_PROC_CLASS );
 596     CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
 597     return atom;
 598 }
 599
 600
 601 /***********************************************************************
 602  *              RegisterClassW (USER32.@)
 603  */
 604 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
 605 {
 606     ATOM atom;
 607     int iSmIconWidth, iSmIconHeight;
 608     CLASS *classPtr;
 609
 610     if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
 611
 612     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 613                                           wc->cbClsExtra, wc->cbWndExtra )))
 614     {
 615         GlobalDeleteAtom( atom );
 616         return 0;
 617     }
 618
 619     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 620                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 621                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 622                    wc->cbWndExtra, classPtr );
 623
 624     iSmIconWidth  = GetSystemMetrics(SM_CXSMICON);
 625     iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
 626
 627     classPtr->hIcon         = wc->hIcon;
 628     classPtr->hIconSm       = CopyImage(wc->hIcon, IMAGE_ICON,
 629                                         iSmIconWidth, iSmIconHeight,
 630                                         LR_COPYFROMRESOURCE);
 631     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 632     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 633
 634     WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
 635                      WIN_PROC_32W, WIN_PROC_CLASS );
 636     CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
 637     return atom;
 638 }
 639
 640
 641 /***********************************************************************
 642  *              RegisterClassEx (USER.397)
 643  */
 644 ATOM WINAPI RegisterClassEx16( const WNDCLASSEX16 *wc )
 645 {
 646     ATOM atom;
 647     CLASS *classPtr;
 648     HINSTANCE16 hInstance = GetExePtr( wc->hInstance );
 649
 650     if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
 651     if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
 652                                           wc->cbClsExtra, wc->cbWndExtra )))
 653     {
 654         GlobalDeleteAtom( atom );
 655         return 0;
 656     }
 657
 658     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 659                    atom, (DWORD)wc->lpfnWndProc, hInstance,
 660                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 661                    wc->cbWndExtra, classPtr );
 662
 663     classPtr->hIcon         = wc->hIcon;
 664     classPtr->hIconSm       = wc->hIconSm;
 665     classPtr->hCursor       = wc->hCursor;
 666     classPtr->hbrBackground = wc->hbrBackground;
 667
 668     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 669                      WIN_PROC_16, WIN_PROC_CLASS );
 670     CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
 671     return atom;
 672 }
 673
 674
 675 /***********************************************************************
 676  *              RegisterClassExA (USER32.@)
 677  */
 678 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
 679 {
 680     ATOM atom;
 681     CLASS *classPtr;
 682
 683     if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
 684
 685     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 686                                           wc->cbClsExtra, wc->cbWndExtra )))
 687     {
 688         GlobalDeleteAtom( atom );
 689         return 0;
 690     }
 691
 692     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 693                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 694                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 695                    wc->cbWndExtra, classPtr );
 696
 697     classPtr->hIcon         = (HICON16)wc->hIcon;
 698     classPtr->hIconSm       = (HICON16)wc->hIconSm;
 699     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 700     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 701     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 702                      WIN_PROC_32A, WIN_PROC_CLASS );
 703     CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
 704     return atom;
 705 }
 706
 707
 708 /***********************************************************************
 709  *              RegisterClassExW (USER32.@)
 710  */
 711 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
 712 {
 713     ATOM atom;
 714     CLASS *classPtr;
 715
 716     if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
 717
 718     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 719                                           wc->cbClsExtra, wc->cbWndExtra )))
 720     {
 721         GlobalDeleteAtom( atom );
 722         return 0;
 723     }
 724
 725     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 726                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 727                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 728                    wc->cbWndExtra, classPtr );
 729
 730     classPtr->hIcon         = (HICON16)wc->hIcon;
 731     classPtr->hIconSm       = (HICON16)wc->hIconSm;
 732     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 733     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 734     WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
 735                      WIN_PROC_32W, WIN_PROC_CLASS );
 736     CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
 737     return atom;
 738 }
 739
 740
 741 /***********************************************************************
 742  *              UnregisterClass (USER.403)
 743  */
 744 BOOL16 WINAPI UnregisterClass16( LPCSTR className, HINSTANCE16 hInstance )
 745 {
 746     return UnregisterClassA( className, GetExePtr( hInstance ) );
 747 }
 748
 749 /***********************************************************************
 750  *              UnregisterClassA (USER32.@)
 751  *
 752  */
 753 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
 754 {
 755     TRACE("%s %x\n",debugres_a(className), hInstance);
 756     return CLASS_UnregisterClass( GlobalFindAtomA( className ), hInstance );
 757 }
 758
 759 /***********************************************************************
 760  *              UnregisterClassW (USER32.@)
 761  */
 762 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
 763 {
 764     TRACE("%s %x\n",debugres_w(className), hInstance);
 765     return CLASS_UnregisterClass( GlobalFindAtomW( className ), hInstance );
 766 }
 767
 768
 769 /***********************************************************************
 770  *              GetClassWord (USER32.@)
 771  */
 772 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
 773 {
 774     CLASS *class;
 775     WORD retvalue = 0;
 776
 777     if (offset < 0) return GetClassLongA( hwnd, offset );
 778
 779     TRACE("%x %x\n",hwnd, offset);
 780
 781     if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
 782
 783     if (offset <= class->cbClsExtra - sizeof(WORD))
 784         retvalue = GET_WORD((char *)(class + 1) + offset);
 785     else
 786         SetLastError( ERROR_INVALID_INDEX );
 787     release_class_ptr( class );
 788     return retvalue;
 789 }
 790
 791
 792 /***********************************************************************
 793  *              GetClassLong (USER.131)
 794  */
 795 LONG WINAPI GetClassLong16( HWND16 hwnd16, INT16 offset )
 796 {
 797     CLASS *class;
 798     LONG ret;
 799     HWND hwnd = (HWND)(ULONG_PTR)hwnd16;  /* no need for full handle */
 800
 801     TRACE("%x %d\n",hwnd, offset);
 802
 803     switch( offset )
 804     {
 805     case GCL_WNDPROC:
 806         if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
 807         ret = (LONG)CLASS_GetProc( class, WIN_PROC_16 );
 808         release_class_ptr( class );
 809         return ret;
 810     case GCL_MENUNAME:
 811         if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
 812         ret = (LONG)CLASS_GetMenuName16( class );
 813         release_class_ptr( class );
 814         return ret;
 815     default:
 816         return GetClassLongA( hwnd, offset );
 817     }
 818 }
 819
 820
 821 /***********************************************************************
 822  *              GetClassLongA (USER32.@)
 823  */
 824 LONG WINAPI GetClassLongA( HWND hwnd, INT offset )
 825 {
 826     CLASS *class;
 827     LONG retvalue = 0;
 828
 829     TRACE("%x %d\n", hwnd, offset);
 830
 831     if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
 832
 833     if (offset >= 0)
 834     {
 835         if (offset <= class->cbClsExtra - sizeof(LONG))
 836             retvalue = GET_DWORD((char *)(class + 1) + offset);
 837         else
 838             SetLastError( ERROR_INVALID_INDEX );
 839         release_class_ptr( class );
 840         return retvalue;
 841     }
 842
 843     switch(offset)
 844     {
 845     case GCL_HBRBACKGROUND:
 846         retvalue = (LONG)class->hbrBackground;
 847         break;
 848     case GCL_HCURSOR:
 849         retvalue = (LONG)class->hCursor;
 850         break;
 851     case GCL_HICON:
 852         retvalue = (LONG)class->hIcon;
 853         break;
 854     case GCL_HICONSM:
 855         retvalue = (LONG)class->hIconSm;
 856         break;
 857     case GCL_STYLE:
 858         retvalue = (LONG)class->style;
 859         break;
 860     case GCL_CBWNDEXTRA:
 861         retvalue = (LONG)class->cbWndExtra;
 862         break;
 863     case GCL_CBCLSEXTRA:
 864         retvalue = (LONG)class->cbClsExtra;
 865         break;
 866     case GCL_HMODULE:
 867         retvalue = (LONG)class->hInstance;
 868         break;
 869     case GCL_WNDPROC:
 870         retvalue = (LONG)CLASS_GetProc( class, WIN_PROC_32A );
 871         break;
 872     case GCL_MENUNAME:
 873         retvalue = (LONG)CLASS_GetMenuNameA( class );
 874         break;
 875     case GCW_ATOM:
 876         retvalue = (DWORD)class->atomName;
 877         break;
 878     default:
 879         SetLastError( ERROR_INVALID_INDEX );
 880         break;
 881     }
 882     release_class_ptr( class );
 883     return retvalue;
 884 }
 885
 886
 887 /***********************************************************************
 888  *              GetClassLongW (USER32.@)
 889  */
 890 LONG WINAPI GetClassLongW( HWND hwnd, INT offset )
 891 {
 892     CLASS *class;
 893     LONG retvalue;
 894
 895     if (offset != GCL_WNDPROC && offset != GCL_MENUNAME)
 896         return GetClassLongA( hwnd, offset );
 897
 898     TRACE("%x %d\n", hwnd, offset);
 899
 900     if (!(class = get_class_ptr( hwnd, FALSE ))) return 0;
 901
 902     if (offset == GCL_WNDPROC)
 903         retvalue = (LONG)CLASS_GetProc( class, WIN_PROC_32W );
 904     else  /* GCL_MENUNAME */
 905         retvalue = (LONG)CLASS_GetMenuNameW( class );
 906
 907     release_class_ptr( class );
 908     return retvalue;
 909 }
 910
 911
 912 /***********************************************************************
 913  *              SetClassWord (USER32.@)
 914  */
 915 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
 916 {
 917     CLASS *class;
 918     WORD retval = 0;
 919
 920     if (offset < 0) return SetClassLongA( hwnd, offset, (DWORD)newval );
 921
 922     TRACE("%x %d %x\n", hwnd, offset, newval);
 923
 924     if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
 925
 926     if (offset <= class->cbClsExtra - sizeof(WORD))
 927     {
 928         void *ptr = (char *)(class + 1) + offset;
 929         retval = GET_WORD(ptr);
 930         PUT_WORD( ptr, newval );
 931     }
 932     else SetLastError( ERROR_INVALID_INDEX );
 933
 934     release_class_ptr( class );
 935     return retval;
 936 }
 937
 938
 939 /***********************************************************************
 940  *              SetClassLong (USER.132)
 941  */
 942 LONG WINAPI SetClassLong16( HWND16 hwnd16, INT16 offset, LONG newval )
 943 {
 944     CLASS *class;
 945     LONG retval;
 946     HWND hwnd = (HWND)(ULONG_PTR)hwnd16;  /* no need for full handle */
 947
 948     TRACE("%x %d %lx\n", hwnd, offset, newval);
 949
 950     switch(offset)
 951     {
 952     case GCL_WNDPROC:
 953         if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
 954         retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_16 );
 955         release_class_ptr( class );
 956         return retval;
 957     case GCL_MENUNAME:
 958         newval = (LONG)MapSL( newval );
 959         /* fall through */
 960     default:
 961         return SetClassLongA( hwnd, offset, newval );
 962     }
 963 }
 964
 965
 966 /***********************************************************************
 967  *              SetClassLongA (USER32.@)
 968  */
 969 LONG WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
 970 {
 971     CLASS *class;
 972     LONG retval = 0;
 973
 974     TRACE("%x %d %lx\n", hwnd, offset, newval);
 975
 976     if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
 977
 978     if (offset >= 0)
 979     {
 980         if (offset <= class->cbClsExtra - sizeof(LONG))
 981         {
 982             void *ptr = (char *)(class + 1) + offset;
 983             retval = GET_DWORD(ptr);
 984             PUT_DWORD( ptr, newval );
 985         }
 986         else SetLastError( ERROR_INVALID_INDEX );
 987     }
 988     else switch(offset)
 989     {
 990     case GCL_MENUNAME:
 991         CLASS_SetMenuNameA( class, (LPCSTR)newval );
 992         retval = 0;  /* Old value is now meaningless anyway */
 993         break;
 994     case GCL_WNDPROC:
 995         retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_32A );
 996         break;
 997     case GCL_HBRBACKGROUND:
 998         retval = (LONG)class->hbrBackground;
 999         class->hbrBackground = newval;
1000         break;
1001     case GCL_HCURSOR:
1002         retval = (LONG)class->hCursor;
1003         class->hCursor = newval;
1004         break;
1005     case GCL_HICON:
1006         retval = (LONG)class->hIcon;
1007         class->hIcon = newval;
1008         break;
1009     case GCL_HICONSM:
1010         retval = (LONG)class->hIconSm;
1011         class->hIconSm = newval;
1012         break;
1013     case GCL_STYLE:
1014         retval = (LONG)class->style;
1015         class->style = newval;
1016         break;
1017     case GCL_CBWNDEXTRA:
1018         retval = (LONG)class->cbWndExtra;
1019         class->cbWndExtra = newval;
1020         break;
1021     case GCL_HMODULE:
1022         retval = (LONG)class->hInstance;
1023         class->hInstance = newval;
1024         break;
1025     case GCW_ATOM:
1026         retval = (DWORD)class->atomName;
1027         class->atomName = newval;
1028         break;
1029     case GCL_CBCLSEXTRA:  /* cannot change this one */
1030         SetLastError( ERROR_INVALID_PARAMETER );
1031         break;
1032     default:
1033         SetLastError( ERROR_INVALID_INDEX );
1034         break;
1035     }
1036     release_class_ptr( class );
1037     return retval;
1038 }
1039
1040
1041 /***********************************************************************
1042  *              SetClassLongW (USER32.@)
1043  */
1044 LONG WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
1045 {
1046     CLASS *class;
1047     LONG retval;
1048
1049     if (offset != GCL_WNDPROC && offset != GCL_MENUNAME)
1050         return SetClassLongA( hwnd, offset, newval );
1051
1052     TRACE("%x %d %lx\n", hwnd, offset, newval);
1053
1054     if (!(class = get_class_ptr( hwnd, TRUE ))) return 0;
1055
1056     if (offset == GCL_WNDPROC)
1057         retval = (LONG)CLASS_SetProc( class, (WNDPROC)newval, WIN_PROC_32W );
1058     else  /* GCL_MENUNAME */
1059     {
1060         CLASS_SetMenuNameW( class, (LPCWSTR)newval );
1061         retval = 0;  /* Old value is now meaningless anyway */
1062     }
1063     release_class_ptr( class );
1064     return retval;
1065 }
1066
1067
1068 /***********************************************************************
1069  *              GetClassNameA (USER32.@)
1070  */
1071 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
1072 {
1073     INT ret = GlobalGetAtomNameA( GetClassLongA( hwnd, GCW_ATOM ), buffer, count );
1074
1075     TRACE("%x %s %x\n",hwnd, debugstr_a(buffer), count);
1076     return ret;
1077 }
1078
1079
1080 /***********************************************************************
1081  *              GetClassNameW (USER32.@)
1082  */
1083 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1084 {
1085     INT ret = GlobalGetAtomNameW( GetClassLongW( hwnd, GCW_ATOM ), buffer, count );
1086
1087     TRACE("%x %s %x\n",hwnd, debugstr_w(buffer), count);
1088     return ret;
1089 }
1090
1091
1092 /***********************************************************************
1093  *              GetClassInfo (USER.404)
1094  */
1095 BOOL16 WINAPI GetClassInfo16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASS16 *wc )
1096 {
1097     ATOM atom;
1098     CLASS *classPtr;
1099
1100     TRACE("%x %s %p\n",hInstance, debugres_a(MapSL(name)), wc);
1101
1102     hInstance = GetExePtr( hInstance );
1103     if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1104         !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1105         return FALSE;
1106     if ((hInstance != classPtr->hInstance) &&
1107         !(classPtr->style & CS_GLOBALCLASS)) /*BWCC likes to pass hInstance=0*/
1108         return FALSE;
1109     wc->style         = (UINT16)classPtr->style;
1110     wc->lpfnWndProc   = CLASS_GetProc( classPtr, WIN_PROC_16 );
1111     wc->cbClsExtra    = (INT16)classPtr->cbClsExtra;
1112     wc->cbWndExtra    = (INT16)classPtr->cbWndExtra;
1113     wc->hInstance     = classPtr->style & CS_GLOBALCLASS ? GetModuleHandle16("USER") : (HINSTANCE16)classPtr->hInstance;
1114     wc->hIcon         = classPtr->hIcon;
1115     wc->hCursor       = classPtr->hCursor;
1116     wc->hbrBackground = classPtr->hbrBackground;
1117     wc->lpszClassName = name;
1118     wc->lpszMenuName  = CLASS_GetMenuName16( classPtr );
1119     return TRUE;
1120 }
1121
1122
1123 /***********************************************************************
1124  *              GetClassInfoA (USER32.@)
1125  */
1126 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name,
1127                                WNDCLASSA *wc )
1128 {
1129     ATOM atom;
1130     CLASS *classPtr;
1131
1132     TRACE("%x %p %p\n",hInstance, name, wc);
1133
1134     /* workaround: if hInstance=NULL you expect to get the system classes
1135     but this classes (as example from comctl32.dll SysListView) won't be
1136     registered with hInstance=NULL in WINE because of the late loading
1137     of this dll. fixes file dialogs in WinWord95 (jsch)*/
1138
1139     if (!(atom=GlobalFindAtomA(name)) || !(classPtr=CLASS_FindClassByAtom(atom,hInstance)))
1140         return FALSE;
1141
1142     if (!(classPtr->style & CS_GLOBALCLASS) &&
1143         classPtr->hInstance &&
1144         (hInstance != classPtr->hInstance))
1145     {
1146         if (hInstance) return FALSE;
1147         WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",name);
1148     }
1149
1150     wc->style         = classPtr->style;
1151     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1152     wc->cbClsExtra    = classPtr->cbClsExtra;
1153     wc->cbWndExtra    = classPtr->cbWndExtra;
1154     wc->hInstance     = hInstance;
1155     wc->hIcon         = (HICON)classPtr->hIcon;
1156     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1157     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1158     wc->lpszMenuName  = CLASS_GetMenuNameA( classPtr );
1159     wc->lpszClassName = name;
1160     return TRUE;
1161 }
1162
1163
1164 /***********************************************************************
1165  *              GetClassInfoW (USER32.@)
1166  */
1167 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name,
1168                                WNDCLASSW *wc )
1169 {
1170     ATOM atom;
1171     CLASS *classPtr;
1172
1173     TRACE("%x %p %p\n",hInstance, name, wc);
1174
1175     if (        !(atom=GlobalFindAtomW(name)) ||
1176                 !(classPtr=CLASS_FindClassByAtom(atom,hInstance))
1177     )
1178         return FALSE;
1179
1180     if (!(classPtr->style & CS_GLOBALCLASS) &&
1181         classPtr->hInstance &&
1182         (hInstance != classPtr->hInstance))
1183     {
1184         if (hInstance) return FALSE;
1185         WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",debugstr_w(name));
1186     }
1187     wc->style         = classPtr->style;
1188     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1189     wc->cbClsExtra    = classPtr->cbClsExtra;
1190     wc->cbWndExtra    = classPtr->cbWndExtra;
1191     wc->hInstance     = hInstance;
1192     wc->hIcon         = (HICON)classPtr->hIcon;
1193     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1194     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1195     wc->lpszMenuName  = CLASS_GetMenuNameW( classPtr );
1196     wc->lpszClassName = name;
1197     return TRUE;
1198 }
1199
1200
1201 /***********************************************************************
1202  *              GetClassInfoEx (USER.398)
1203  *
1204  * FIXME: this is just a guess, I have no idea if GetClassInfoEx() is the
1205  * same in Win16 as in Win32. --AJ
1206  */
1207 BOOL16 WINAPI GetClassInfoEx16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASSEX16 *wc )
1208 {
1209     ATOM atom;
1210     CLASS *classPtr;
1211
1212     TRACE("%x %s %p\n",hInstance,debugres_a( MapSL(name) ), wc);
1213
1214     hInstance = GetExePtr( hInstance );
1215     if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1216         !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1217         (hInstance != classPtr->hInstance)) return FALSE;
1218     wc->style         = classPtr->style;
1219     wc->lpfnWndProc   = CLASS_GetProc( classPtr, WIN_PROC_16 );
1220     wc->cbClsExtra    = (INT16)classPtr->cbClsExtra;
1221     wc->cbWndExtra    = (INT16)classPtr->cbWndExtra;
1222     wc->hInstance     = (HINSTANCE16)classPtr->hInstance;
1223     wc->hIcon         = classPtr->hIcon;
1224     wc->hIconSm       = classPtr->hIconSm;
1225     wc->hCursor       = classPtr->hCursor;
1226     wc->hbrBackground = classPtr->hbrBackground;
1227     wc->lpszClassName = (SEGPTR)0;
1228     wc->lpszMenuName  = CLASS_GetMenuName16( classPtr );
1229     wc->lpszClassName = name;
1230
1231     /* We must return the atom of the class here instead of just TRUE. */
1232     return atom;
1233 }
1234
1235
1236 /***********************************************************************
1237  *              GetClassInfoExA (USER32.@)
1238  */
1239 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name,
1240                                  WNDCLASSEXA *wc )
1241 {
1242     ATOM atom;
1243     CLASS *classPtr;
1244
1245     TRACE("%x %p %p\n",hInstance, name, wc);
1246
1247     if (!(atom = GlobalFindAtomA( name )) ||
1248         !(classPtr = CLASS_FindClassByAtom( atom, hInstance ))
1249         /*|| (hInstance != classPtr->hInstance) */ ) return FALSE;
1250     wc->style         = classPtr->style;
1251     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1252     wc->cbClsExtra    = classPtr->cbClsExtra;
1253     wc->cbWndExtra    = classPtr->cbWndExtra;
1254     wc->hInstance     = classPtr->hInstance;
1255     wc->hIcon         = (HICON)classPtr->hIcon;
1256     wc->hIconSm       = (HICON)classPtr->hIconSm;
1257     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1258     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1259     wc->lpszMenuName  = CLASS_GetMenuNameA( classPtr );
1260     wc->lpszClassName = name;
1261
1262     /* We must return the atom of the class here instead of just TRUE. */
1263     return atom;
1264 }
1265
1266
1267 /***********************************************************************
1268  *              GetClassInfoExW (USER32.@)
1269  */
1270 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name,
1271                                  WNDCLASSEXW *wc )
1272 {
1273     ATOM atom;
1274     CLASS *classPtr;
1275
1276     TRACE("%x %p %p\n",hInstance, name, wc);
1277
1278     if (!(atom = GlobalFindAtomW( name )) ||
1279         !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1280         (hInstance != classPtr->hInstance)) return FALSE;
1281     wc->style         = classPtr->style;
1282     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1283     wc->cbClsExtra    = classPtr->cbClsExtra;
1284     wc->cbWndExtra    = classPtr->cbWndExtra;
1285     wc->hInstance     = classPtr->hInstance;
1286     wc->hIcon         = (HICON)classPtr->hIcon;
1287     wc->hIconSm       = (HICON)classPtr->hIconSm;
1288     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1289     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1290     wc->lpszMenuName  = CLASS_GetMenuNameW( classPtr );
1291     wc->lpszClassName = name;
1292
1293     /* We must return the atom of the class here instead of just TRUE. */
1294     return atom;
1295 }
1296
1297
1298 #if 0  /* toolhelp is in kernel, so this cannot work */
1299
1300 /***********************************************************************
1301  *              ClassFirst (TOOLHELP.69)
1302  */
1303 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1304 {
1305     TRACE("%p\n",pClassEntry);
1306     pClassEntry->wNext = 1;
1307     return ClassNext16( pClassEntry );
1308 }
1309
1310
1311 /***********************************************************************
1312  *              ClassNext (TOOLHELP.70)
1313  */
1314 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1315 {
1316     int i;
1317     CLASS *class = firstClass;
1318
1319     TRACE("%p\n",pClassEntry);
1320
1321     if (!pClassEntry->wNext) return FALSE;
1322     for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1323     if (!class)
1324     {
1325         pClassEntry->wNext = 0;
1326         return FALSE;
1327     }
1328     pClassEntry->hInst = class->hInstance;
1329     pClassEntry->wNext++;
1330     GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1331                           sizeof(pClassEntry->szClassName) );
1332     return TRUE;
1333 }
1334 #endif