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 <stdlib.h>
  16 #include <string.h>
  17 #include "wine/winbase16.h"
  18 #include "winerror.h"
  19 #include "windef.h"
  20 #include "wingdi.h"
  21 #include "wine/winuser16.h"
  22 #include "wine/unicode.h"
  23 #include "wine/port.h"
  24 #include "heap.h"
  25 #include "win.h"
  26 #include "controls.h"
  27 #include "dce.h"
  28 #include "winproc.h"
  29 #include "debugtools.h"
  30
  31 DEFAULT_DEBUG_CHANNEL(class);
  32
  33 typedef struct tagCLASS
  34 {
  35     struct tagCLASS *next;          /* Next class */
  36     struct tagCLASS *prev;          /* Prev class */
  37     UINT             cWindows;      /* Count of existing windows */
  38     UINT             style;         /* Class style */
  39     HWINDOWPROC      winprocA;      /* Window procedure (ASCII) */
  40     HWINDOWPROC      winprocW;      /* Window procedure (Unicode) */
  41     INT              cbClsExtra;    /* Class extra bytes */
  42     INT              cbWndExtra;    /* Window extra bytes */
  43     LPWSTR           menuName;      /* Default menu name (Unicode followed by ASCII) */
  44     struct tagDCE   *dce;           /* Class DCE (if CS_CLASSDC) */
  45     HINSTANCE        hInstance;     /* Module that created the task */
  46     HICON            hIcon;         /* Default icon */
  47     HICON            hIconSm;       /* Default small icon */
  48     HCURSOR          hCursor;       /* Default cursor */
  49     HBRUSH           hbrBackground; /* Default background */
  50     ATOM             atomName;      /* Name of the class */
  51 } CLASS;
  52
  53 static CLASS *firstClass;
  54
  55
  56 /***********************************************************************
  57  *           CLASS_GetProc
  58  *
  59  * Get the class winproc for a given proc type
  60  */
  61 static WNDPROC16 CLASS_GetProc( CLASS *classPtr, WINDOWPROCTYPE type )
  62 {
  63     HWINDOWPROC proc = classPtr->winprocA;
  64
  65     if (classPtr->winprocW)
  66     {
  67         /* if we have a Unicode proc, use it if we have no ASCII proc
  68          * or if we have both and Unicode was requested
  69          */
  70         if (!proc || type == WIN_PROC_32W) proc = classPtr->winprocW;
  71     }
  72     return WINPROC_GetProc( proc, type );
  73 }
  74
  75
  76 /***********************************************************************
  77  *           CLASS_SetProc
  78  *
  79  * Set the class winproc for a given proc type.
  80  * Returns the previous window proc.
  81  */
  82 static WNDPROC16 CLASS_SetProc( CLASS *classPtr, WNDPROC newproc, WINDOWPROCTYPE type )
  83 {
  84     HWINDOWPROC *proc = &classPtr->winprocA;
  85     WNDPROC16 ret;
  86
  87     if (classPtr->winprocW)
  88     {
  89         /* if we have a Unicode proc, use it if we have no ASCII proc
  90          * or if we have both and Unicode was requested
  91          */
  92         if (!*proc || type == WIN_PROC_32W) proc = &classPtr->winprocW;
  93     }
  94     ret = WINPROC_GetProc( *proc, type );
  95     WINPROC_SetProc( proc, (HWINDOWPROC)newproc, type, WIN_PROC_CLASS );
  96     /* now free the one that we didn't set */
  97     if (classPtr->winprocA && classPtr->winprocW)
  98     {
  99         if (proc == &classPtr->winprocA)
 100         {
 101             WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
 102             classPtr->winprocW = 0;
 103         }
 104         else
 105         {
 106             WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
 107             classPtr->winprocA = 0;
 108         }
 109     }
 110     return ret;
 111 }
 112
 113
 114 /***********************************************************************
 115  *           CLASS_GetMenuNameA
 116  *
 117  * Get the menu name as a ASCII string.
 118  */
 119 inline static LPSTR CLASS_GetMenuNameA( CLASS *classPtr )
 120 {
 121     if (!HIWORD(classPtr->menuName)) return (LPSTR)classPtr->menuName;
 122     return (LPSTR)(classPtr->menuName + strlenW(classPtr->menuName) + 1);
 123 }
 124
 125
 126 /***********************************************************************
 127  *           CLASS_GetMenuNameW
 128  *
 129  * Get the menu name as a Unicode string.
 130  */
 131 inline static LPWSTR CLASS_GetMenuNameW( CLASS *classPtr )
 132 {
 133     return classPtr->menuName;
 134 }
 135
 136
 137 /***********************************************************************
 138  *           CLASS_SetMenuNameA
 139  *
 140  * Set the menu name in a class structure by copying the string.
 141  */
 142 static void CLASS_SetMenuNameA( CLASS *classPtr, LPCSTR name )
 143 {
 144     if (HIWORD(classPtr->menuName)) SEGPTR_FREE( classPtr->menuName );
 145     if (HIWORD(name))
 146     {
 147         DWORD lenA = strlen(name) + 1;
 148         DWORD lenW = MultiByteToWideChar( CP_ACP, 0, name, lenA, NULL, 0 );
 149         classPtr->menuName = SEGPTR_ALLOC( lenA + lenW*sizeof(WCHAR) );
 150         MultiByteToWideChar( CP_ACP, 0, name, lenA, classPtr->menuName, lenW );
 151         memcpy( classPtr->menuName + lenW, name, lenA );
 152     }
 153     else classPtr->menuName = (LPWSTR)name;
 154 }
 155
 156
 157 /***********************************************************************
 158  *           CLASS_SetMenuNameW
 159  *
 160  * Set the menu name in a class structure by copying the string.
 161  */
 162 static void CLASS_SetMenuNameW( CLASS *classPtr, LPCWSTR name )
 163 {
 164     if (HIWORD(classPtr->menuName)) SEGPTR_FREE( classPtr->menuName );
 165     if (HIWORD(name))
 166     {
 167         DWORD lenW = strlenW(name) + 1;
 168         DWORD lenA = WideCharToMultiByte( CP_ACP, 0, name, lenW, NULL, 0, NULL, NULL );
 169         classPtr->menuName = SEGPTR_ALLOC( lenA + lenW*sizeof(WCHAR) );
 170         memcpy( classPtr->menuName, name, lenW*sizeof(WCHAR) );
 171         WideCharToMultiByte( CP_ACP, 0, name, lenW,
 172                              (char *)(classPtr->menuName + lenW), lenA, NULL, NULL );
 173     }
 174     else classPtr->menuName = (LPWSTR)name;
 175 }
 176
 177
 178 /***********************************************************************
 179  *           CLASS_FreeClass
 180  *
 181  * Free a class structure.
 182  */
 183 static BOOL CLASS_FreeClass( CLASS *classPtr )
 184 {
 185     TRACE("%p\n", classPtr);
 186
 187     /* Check if we can remove this class */
 188
 189     if (classPtr->cWindows > 0)
 190     {
 191         SetLastError( ERROR_CLASS_HAS_WINDOWS );
 192         return FALSE;
 193     }
 194
 195     /* Remove the class from the linked list */
 196
 197     if (classPtr->next) classPtr->next->prev = classPtr->prev;
 198     if (classPtr->prev) classPtr->prev->next = classPtr->next;
 199     else firstClass = classPtr->next;
 200
 201     /* Delete the class */
 202
 203     if (classPtr->dce) DCE_FreeDCE( classPtr->dce );
 204     if (classPtr->hbrBackground > (HBRUSH)(COLOR_GRADIENTINACTIVECAPTION + 1))
 205         DeleteObject( classPtr->hbrBackground );
 206     GlobalDeleteAtom( classPtr->atomName );
 207     WINPROC_FreeProc( classPtr->winprocA, WIN_PROC_CLASS );
 208     WINPROC_FreeProc( classPtr->winprocW, WIN_PROC_CLASS );
 209     HeapFree( GetProcessHeap(), 0, classPtr->menuName );
 210     HeapFree( GetProcessHeap(), 0, classPtr );
 211     return TRUE;
 212 }
 213
 214
 215 /***********************************************************************
 216  *           CLASS_FreeModuleClasses
 217  */
 218 void CLASS_FreeModuleClasses( HMODULE16 hModule )
 219 {
 220     CLASS *ptr, *next;
 221
 222     TRACE("0x%08x\n", hModule);
 223
 224     for (ptr = firstClass; ptr; ptr = next)
 225     {
 226         next = ptr->next;
 227         if (ptr->hInstance == hModule) CLASS_FreeClass( ptr );
 228     }
 229 }
 230
 231
 232 /***********************************************************************
 233  *           CLASS_FindClassByAtom
 234  *
 235  * Return a pointer to the class.
 236  * hinstance has been normalized by the caller.
 237  *
 238  * NOTES
 239  *  980805 a local class will be found now if registred with hInst=0
 240  *  and looed up with a hInst!=0. msmoney does it (jsch)
 241  */
 242 static CLASS *CLASS_FindClassByAtom( ATOM atom, HINSTANCE hinstance )
 243 {
 244     CLASS * class, *tclass=0;
 245
 246     TRACE("0x%08x 0x%08x\n", atom, hinstance);
 247
 248     /* First search task-specific classes */
 249
 250     for (class = firstClass; (class); class = class->next)
 251     {
 252         if (class->style & CS_GLOBALCLASS) continue;
 253         if (class->atomName == atom)
 254         {
 255             if (hinstance==class->hInstance || hinstance==0xffff )
 256             {
 257                 TRACE("-- found local %p\n", class);
 258                 return class;
 259             }
 260             if (class->hInstance==0) tclass = class;
 261         }
 262     }
 263
 264       /* Then search global classes */
 265
 266     for (class = firstClass; (class); class = class->next)
 267     {
 268         if (!(class->style & CS_GLOBALCLASS)) continue;
 269         if (class->atomName == atom)
 270         {
 271             TRACE("-- found global %p\n", class);
 272             return class;
 273         }
 274     }
 275
 276     /* Then check if there was a local class with hInst=0*/
 277     if ( tclass )
 278     {
 279         WARN("-- found local Class registred with hInst=0\n");
 280         return tclass;
 281     }
 282
 283     TRACE("-- not found\n");
 284     return 0;
 285 }
 286
 287
 288 /***********************************************************************
 289  *           CLASS_RegisterClass
 290  *
 291  * The real RegisterClass() functionality.
 292  */
 293 static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance,
 294                                    DWORD style, INT classExtra, INT winExtra )
 295 {
 296     CLASS *classPtr;
 297
 298     TRACE("atom=0x%x hinst=0x%x style=0x%lx clExtr=0x%x winExtr=0x%x\n",
 299           atom, hInstance, style, classExtra, winExtra );
 300
 301    /* Check if a class with this name already exists */
 302     classPtr = CLASS_FindClassByAtom( atom, hInstance );
 303     if (classPtr)
 304     {
 305         /* Class can be created only if it is local and */
 306         /* if the class with the same name is global.   */
 307
 308         if ((style & CS_GLOBALCLASS) || !(classPtr->style & CS_GLOBALCLASS))
 309         {
 310             SetLastError( ERROR_CLASS_ALREADY_EXISTS );
 311             return NULL;
 312         }
 313     }
 314
 315     /* Fix the extra bytes value */
 316
 317     if (classExtra < 0) classExtra = 0;
 318     else if (classExtra > 40)  /* Extra bytes are limited to 40 in Win32 */
 319         WARN("Class extra bytes %d is > 40\n", classExtra);
 320     if (winExtra < 0) winExtra = 0;
 321     else if (winExtra > 40)    /* Extra bytes are limited to 40 in Win32 */
 322         WARN("Win extra bytes %d is > 40\n", winExtra );
 323
 324     /* Create the class */
 325
 326     classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );
 327     if (!classPtr) return NULL;
 328     classPtr->style       = style;
 329     classPtr->cbWndExtra  = winExtra;
 330     classPtr->cbClsExtra  = classExtra;
 331     classPtr->hInstance   = hInstance;
 332     classPtr->atomName    = atom;
 333     classPtr->dce         = (style & CS_CLASSDC) ? DCE_AllocDCE( 0, DCE_CLASS_DC ) : NULL;
 334
 335     /* Other non-null values must be set by caller */
 336
 337     if ((classPtr->next = firstClass)) firstClass->prev = classPtr;
 338     firstClass = classPtr;
 339     return classPtr;
 340 }
 341
 342
 343 /***********************************************************************
 344  *           CLASS_RegisterBuiltinClass
 345  *
 346  * Register a builtin control class.
 347  * This allows having both ASCII and Unicode winprocs for the same class.
 348  */
 349 ATOM CLASS_RegisterBuiltinClass( const struct builtin_class_descr *descr )
 350 {
 351     ATOM atom;
 352     CLASS *classPtr;
 353
 354     if (!(atom = GlobalAddAtomA( descr->name ))) return 0;
 355
 356     if (!(classPtr = CLASS_RegisterClass( atom, 0, descr->style, 0, descr->extra )))
 357     {
 358         GlobalDeleteAtom( atom );
 359         return 0;
 360     }
 361
 362     classPtr->hCursor       = LoadCursorA( 0, descr->cursor );
 363     classPtr->hbrBackground = descr->brush;
 364
 365     if (descr->procA) WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)descr->procA,
 366                                        WIN_PROC_32A, WIN_PROC_CLASS );
 367     if (descr->procW) WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)descr->procW,
 368                                        WIN_PROC_32W, WIN_PROC_CLASS );
 369     return atom;
 370 }
 371
 372
 373 /***********************************************************************
 374  *           CLASS_AddWindow
 375  *
 376  * Add a new window using this class, and return the necessary
 377  * information for creating the window.
 378  */
 379 CLASS *CLASS_AddWindow( ATOM atom, HINSTANCE inst, WINDOWPROCTYPE type,
 380                         INT *winExtra, WNDPROC *winproc, DWORD *style, struct tagDCE **dce )
 381 {
 382     CLASS *class;
 383     if (type == WIN_PROC_16) inst = GetExePtr(inst);
 384
 385     if (!(class = CLASS_FindClassByAtom( atom, inst ))) return NULL;
 386     class->cWindows++;
 387
 388     if (type == WIN_PROC_32W)
 389     {
 390         if (!(*winproc = class->winprocW)) *winproc = class->winprocA;
 391     }
 392     else
 393     {
 394         if (!(*winproc = class->winprocA)) *winproc = class->winprocW;
 395     }
 396     *winExtra = class->cbWndExtra;
 397     *style = class->style;
 398     *dce = class->dce;
 399     return class;
 400 }
 401
 402
 403 /***********************************************************************
 404  *           CLASS_RemoveWindow
 405  *
 406  * Remove a window from the class window count.
 407  */
 408 void CLASS_RemoveWindow( CLASS *cls )
 409 {
 410     if (cls && cls->cWindows) cls->cWindows--;
 411 }
 412
 413
 414 /***********************************************************************
 415  *              RegisterClass (USER.57)
 416  */
 417 ATOM WINAPI RegisterClass16( const WNDCLASS16 *wc )
 418 {
 419     ATOM atom;
 420     CLASS *classPtr;
 421     int iSmIconWidth, iSmIconHeight;
 422     HINSTANCE16 hInstance=GetExePtr(wc->hInstance);
 423
 424     if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
 425     if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
 426                                           wc->cbClsExtra, wc->cbWndExtra )))
 427     {
 428         GlobalDeleteAtom( atom );
 429         return 0;
 430     }
 431
 432     TRACE("atom=%04x wndproc=%08lx hinst=%04x "
 433                  "bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
 434                    atom, (DWORD)wc->lpfnWndProc, hInstance,
 435                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 436                    wc->cbWndExtra, classPtr,
 437                    HIWORD(wc->lpszClassName) ?
 438                        (char *)MapSL(wc->lpszClassName) : "" );
 439
 440     iSmIconWidth  = GetSystemMetrics(SM_CXSMICON);
 441     iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
 442
 443     classPtr->hIcon         = wc->hIcon;
 444     classPtr->hIconSm       = CopyImage(wc->hIcon, IMAGE_ICON,
 445                                         iSmIconWidth, iSmIconHeight,
 446                                         LR_COPYFROMRESOURCE);
 447     classPtr->hCursor       = wc->hCursor;
 448     classPtr->hbrBackground = wc->hbrBackground;
 449
 450     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 451                      WIN_PROC_16, WIN_PROC_CLASS );
 452     CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
 453
 454     return atom;
 455 }
 456
 457
 458 /***********************************************************************
 459  *              RegisterClassA (USER32.@)
 460  * RETURNS
 461  *      >0: Unique identifier
 462  *      0: Failure
 463  */
 464 ATOM WINAPI RegisterClassA( const WNDCLASSA* wc ) /* [in] Address of structure with class data */
 465 {
 466     ATOM atom;
 467     int iSmIconWidth, iSmIconHeight;
 468     CLASS *classPtr;
 469
 470     if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
 471
 472     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 473                                           wc->cbClsExtra, wc->cbWndExtra )))
 474     {
 475         GlobalDeleteAtom( atom );
 476         return 0;
 477     }
 478
 479     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p name='%s'\n",
 480                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 481                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 482                    wc->cbWndExtra, classPtr,
 483                    HIWORD(wc->lpszClassName) ? wc->lpszClassName : "" );
 484
 485     iSmIconWidth  = GetSystemMetrics(SM_CXSMICON);
 486     iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
 487
 488     classPtr->hIcon         = wc->hIcon;
 489     classPtr->hIconSm       = CopyImage(wc->hIcon, IMAGE_ICON,
 490                                         iSmIconWidth, iSmIconHeight,
 491                                         LR_COPYFROMRESOURCE);
 492     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 493     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 494
 495     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 496                      WIN_PROC_32A, WIN_PROC_CLASS );
 497     CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
 498     return atom;
 499 }
 500
 501
 502 /***********************************************************************
 503  *              RegisterClassW (USER32.@)
 504  */
 505 ATOM WINAPI RegisterClassW( const WNDCLASSW* wc )
 506 {
 507     ATOM atom;
 508     int iSmIconWidth, iSmIconHeight;
 509     CLASS *classPtr;
 510
 511     if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
 512
 513     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 514                                           wc->cbClsExtra, wc->cbWndExtra )))
 515     {
 516         GlobalDeleteAtom( atom );
 517         return 0;
 518     }
 519
 520     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 521                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 522                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 523                    wc->cbWndExtra, classPtr );
 524
 525     iSmIconWidth  = GetSystemMetrics(SM_CXSMICON);
 526     iSmIconHeight = GetSystemMetrics(SM_CYSMICON);
 527
 528     classPtr->hIcon         = wc->hIcon;
 529     classPtr->hIconSm       = CopyImage(wc->hIcon, IMAGE_ICON,
 530                                         iSmIconWidth, iSmIconHeight,
 531                                         LR_COPYFROMRESOURCE);
 532     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 533     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 534
 535     WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
 536                      WIN_PROC_32W, WIN_PROC_CLASS );
 537     CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
 538     return atom;
 539 }
 540
 541
 542 /***********************************************************************
 543  *              RegisterClassEx (USER.397)
 544  */
 545 ATOM WINAPI RegisterClassEx16( const WNDCLASSEX16 *wc )
 546 {
 547     ATOM atom;
 548     CLASS *classPtr;
 549     HINSTANCE16 hInstance = GetExePtr( wc->hInstance );
 550
 551     if (!(atom = GlobalAddAtomA( MapSL(wc->lpszClassName) ))) return 0;
 552     if (!(classPtr = CLASS_RegisterClass( atom, hInstance, wc->style,
 553                                           wc->cbClsExtra, wc->cbWndExtra )))
 554     {
 555         GlobalDeleteAtom( atom );
 556         return 0;
 557     }
 558
 559     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 560                    atom, (DWORD)wc->lpfnWndProc, hInstance,
 561                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 562                    wc->cbWndExtra, classPtr );
 563
 564     classPtr->hIcon         = wc->hIcon;
 565     classPtr->hIconSm       = wc->hIconSm;
 566     classPtr->hCursor       = wc->hCursor;
 567     classPtr->hbrBackground = wc->hbrBackground;
 568
 569     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 570                      WIN_PROC_16, WIN_PROC_CLASS );
 571     CLASS_SetMenuNameA( classPtr, MapSL(wc->lpszMenuName) );
 572     return atom;
 573 }
 574
 575
 576 /***********************************************************************
 577  *              RegisterClassExA (USER32.@)
 578  */
 579 ATOM WINAPI RegisterClassExA( const WNDCLASSEXA* wc )
 580 {
 581     ATOM atom;
 582     CLASS *classPtr;
 583
 584     if (!(atom = GlobalAddAtomA( wc->lpszClassName ))) return 0;
 585
 586     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 587                                           wc->cbClsExtra, wc->cbWndExtra )))
 588     {
 589         GlobalDeleteAtom( atom );
 590         return 0;
 591     }
 592
 593     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 594                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 595                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 596                    wc->cbWndExtra, classPtr );
 597
 598     classPtr->hIcon         = (HICON16)wc->hIcon;
 599     classPtr->hIconSm       = (HICON16)wc->hIconSm;
 600     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 601     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 602     WINPROC_SetProc( &classPtr->winprocA, (HWINDOWPROC)wc->lpfnWndProc,
 603                      WIN_PROC_32A, WIN_PROC_CLASS );
 604     CLASS_SetMenuNameA( classPtr, wc->lpszMenuName );
 605     return atom;
 606 }
 607
 608
 609 /***********************************************************************
 610  *              RegisterClassExW (USER32.@)
 611  */
 612 ATOM WINAPI RegisterClassExW( const WNDCLASSEXW* wc )
 613 {
 614     ATOM atom;
 615     CLASS *classPtr;
 616
 617     if (!(atom = GlobalAddAtomW( wc->lpszClassName ))) return 0;
 618
 619     if (!(classPtr = CLASS_RegisterClass( atom, wc->hInstance, wc->style,
 620                                           wc->cbClsExtra, wc->cbWndExtra )))
 621     {
 622         GlobalDeleteAtom( atom );
 623         return 0;
 624     }
 625
 626     TRACE("atom=%04x wndproc=%08lx hinst=%04x bg=%04x style=%08x clsExt=%d winExt=%d class=%p\n",
 627                    atom, (DWORD)wc->lpfnWndProc, wc->hInstance,
 628                    wc->hbrBackground, wc->style, wc->cbClsExtra,
 629                    wc->cbWndExtra, classPtr );
 630
 631     classPtr->hIcon         = (HICON16)wc->hIcon;
 632     classPtr->hIconSm       = (HICON16)wc->hIconSm;
 633     classPtr->hCursor       = (HCURSOR16)wc->hCursor;
 634     classPtr->hbrBackground = (HBRUSH16)wc->hbrBackground;
 635     WINPROC_SetProc( &classPtr->winprocW, (HWINDOWPROC)wc->lpfnWndProc,
 636                      WIN_PROC_32W, WIN_PROC_CLASS );
 637     CLASS_SetMenuNameW( classPtr, wc->lpszMenuName );
 638     return atom;
 639 }
 640
 641
 642 /***********************************************************************
 643  *              UnregisterClass (USER.403)
 644  */
 645 BOOL16 WINAPI UnregisterClass16( LPCSTR className, HINSTANCE16 hInstance )
 646 {
 647     return UnregisterClassA( className, GetExePtr( hInstance ) );
 648 }
 649
 650
 651 /***********************************************************************
 652  *              UnregisterClassA (USER32.@)
 653  *
 654  */
 655 BOOL WINAPI UnregisterClassA( LPCSTR className, HINSTANCE hInstance )
 656 {
 657     CLASS *classPtr;
 658     ATOM atom;
 659
 660     TRACE("%s %x\n",debugres_a(className), hInstance);
 661
 662     if (!(atom = GlobalFindAtomA( className )))
 663     {
 664         SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
 665         return FALSE;
 666     }
 667     if (!(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
 668         (classPtr->hInstance != hInstance))
 669     {
 670         SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
 671         return FALSE;
 672     }
 673     return CLASS_FreeClass( classPtr );
 674 }
 675
 676 /***********************************************************************
 677  *              UnregisterClassW (USER32.@)
 678  */
 679 BOOL WINAPI UnregisterClassW( LPCWSTR className, HINSTANCE hInstance )
 680 {
 681     CLASS *classPtr;
 682     ATOM atom;
 683
 684     TRACE("%s %x\n",debugres_w(className), hInstance);
 685
 686     if (!(atom = GlobalFindAtomW( className )))
 687     {
 688         SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
 689         return FALSE;
 690     }
 691     if (!(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
 692         (classPtr->hInstance != hInstance))
 693     {
 694         SetLastError(ERROR_CLASS_DOES_NOT_EXIST);
 695         return FALSE;
 696     }
 697     return CLASS_FreeClass( classPtr );
 698 }
 699
 700
 701 /***********************************************************************
 702  *              GetClassWord (USER32.@)
 703  */
 704 WORD WINAPI GetClassWord( HWND hwnd, INT offset )
 705 {
 706     WND * wndPtr;
 707     WORD retvalue = 0;
 708
 709     TRACE("%x %x\n",hwnd, offset);
 710
 711     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
 712     if (offset >= 0)
 713     {
 714         if (offset <= wndPtr->class->cbClsExtra - sizeof(WORD))
 715         {
 716             retvalue = GET_WORD((char *)(wndPtr->class + 1) + offset);
 717             goto END;
 718         }
 719     }
 720     else switch(offset)
 721     {
 722         case GCW_ATOM:
 723             retvalue = wndPtr->class->atomName;
 724             goto END;
 725         case GCL_HBRBACKGROUND:
 726         case GCL_HCURSOR:
 727         case GCL_HICON:
 728         case GCL_HICONSM:
 729         case GCL_STYLE:
 730         case GCL_CBWNDEXTRA:
 731         case GCL_CBCLSEXTRA:
 732         case GCL_HMODULE:
 733             retvalue = (WORD)GetClassLongA( hwnd, offset );
 734             goto END;
 735     }
 736
 737     WARN("Invalid offset %d\n", offset);
 738  END:
 739     WIN_ReleaseWndPtr(wndPtr);
 740     return retvalue;
 741 }
 742
 743
 744 /***********************************************************************
 745  *              GetClassLong (USER.131)
 746  */
 747 LONG WINAPI GetClassLong16( HWND16 hwnd, INT16 offset )
 748 {
 749     WND *wndPtr;
 750     LONG ret;
 751
 752     TRACE("%x %x\n",hwnd, offset);
 753
 754     switch( offset )
 755     {
 756     case GCL_WNDPROC:
 757         if (!(wndPtr = WIN_FindWndPtr16( hwnd ))) return 0;
 758         ret = (LONG)CLASS_GetProc( wndPtr->class, WIN_PROC_16 );
 759         WIN_ReleaseWndPtr(wndPtr);
 760         return ret;
 761     case GCL_MENUNAME:
 762         ret = GetClassLongA( WIN_Handle32(hwnd), offset );
 763         return (LONG)SEGPTR_GET( (void *)ret );
 764     default:
 765         return GetClassLongA( WIN_Handle32(hwnd), offset );
 766     }
 767 }
 768
 769
 770 /***********************************************************************
 771  *              GetClassLongA (USER32.@)
 772  */
 773 LONG WINAPI GetClassLongA( HWND hwnd, INT offset )
 774 {
 775     WND * wndPtr;
 776     LONG retvalue;
 777
 778     TRACE("%x %x\n",hwnd, offset);
 779
 780     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
 781     if (offset >= 0)
 782     {
 783         if (offset <= wndPtr->class->cbClsExtra - sizeof(LONG))
 784         {
 785             retvalue = GET_DWORD((char *)(wndPtr->class + 1) + offset);
 786             goto END;
 787         }
 788     }
 789
 790     switch(offset)
 791     {
 792         case GCL_HBRBACKGROUND:
 793             retvalue = (LONG)wndPtr->class->hbrBackground;
 794             goto END;
 795         case GCL_HCURSOR:
 796             retvalue = (LONG)wndPtr->class->hCursor;
 797             goto END;
 798         case GCL_HICON:
 799             retvalue = (LONG)wndPtr->class->hIcon;
 800             goto END;
 801         case GCL_HICONSM:
 802             retvalue = (LONG)wndPtr->class->hIconSm;
 803             goto END;
 804         case GCL_STYLE:
 805             retvalue = (LONG)wndPtr->class->style;
 806             goto END;
 807         case GCL_CBWNDEXTRA:
 808             retvalue = (LONG)wndPtr->class->cbWndExtra;
 809             goto END;
 810         case GCL_CBCLSEXTRA:
 811             retvalue = (LONG)wndPtr->class->cbClsExtra;
 812             goto END;
 813         case GCL_HMODULE:
 814             retvalue = (LONG)wndPtr->class->hInstance;
 815             goto END;
 816         case GCL_WNDPROC:
 817             retvalue = (LONG)CLASS_GetProc( wndPtr->class, WIN_PROC_32A );
 818             goto END;
 819         case GCL_MENUNAME:
 820             retvalue = (LONG)CLASS_GetMenuNameA( wndPtr->class );
 821             goto END;
 822         case GCW_ATOM:
 823             retvalue = GetClassWord( hwnd, offset );
 824             goto END;
 825     }
 826     WARN("Invalid offset %d\n", offset);
 827     retvalue = 0;
 828 END:
 829     WIN_ReleaseWndPtr(wndPtr);
 830     return retvalue;
 831 }
 832
 833
 834 /***********************************************************************
 835  *              GetClassLongW (USER32.@)
 836  */
 837 LONG WINAPI GetClassLongW( HWND hwnd, INT offset )
 838 {
 839     WND * wndPtr;
 840     LONG retvalue;
 841
 842     TRACE("%x %x\n",hwnd, offset);
 843
 844     switch(offset)
 845     {
 846     case GCL_WNDPROC:
 847         if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
 848         retvalue = (LONG)CLASS_GetProc( wndPtr->class, WIN_PROC_32W );
 849         WIN_ReleaseWndPtr(wndPtr);
 850         return retvalue;
 851     case GCL_MENUNAME:
 852         if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
 853         retvalue = (LONG)CLASS_GetMenuNameW( wndPtr->class );
 854         WIN_ReleaseWndPtr(wndPtr);
 855         return retvalue;
 856     default:
 857         return GetClassLongA( hwnd, offset );
 858     }
 859 }
 860
 861
 862 /***********************************************************************
 863  *              SetClassWord (USER32.@)
 864  */
 865 WORD WINAPI SetClassWord( HWND hwnd, INT offset, WORD newval )
 866 {
 867     WND * wndPtr;
 868     WORD retval = 0;
 869     void *ptr;
 870
 871     TRACE("%x %x %x\n",hwnd, offset, newval);
 872
 873     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
 874     if (offset >= 0)
 875     {
 876         if (offset + sizeof(WORD) <= wndPtr->class->cbClsExtra)
 877             ptr = (char *)(wndPtr->class + 1) + offset;
 878         else
 879         {
 880             WARN("Invalid offset %d\n", offset );
 881             WIN_ReleaseWndPtr(wndPtr);
 882             return 0;
 883         }
 884     }
 885     else switch(offset)
 886     {
 887         case GCL_HBRBACKGROUND:
 888         case GCL_HCURSOR:
 889         case GCL_HICON:
 890         case GCL_HICONSM:
 891         case GCL_STYLE:
 892         case GCL_CBWNDEXTRA:
 893         case GCL_CBCLSEXTRA:
 894         case GCL_HMODULE:
 895             WIN_ReleaseWndPtr(wndPtr);
 896             return (WORD)SetClassLongA( hwnd, offset, (LONG)newval );
 897         case GCW_ATOM:
 898             ptr = &wndPtr->class->atomName;
 899             break;
 900         default:
 901             WARN("Invalid offset %d\n", offset);
 902             WIN_ReleaseWndPtr(wndPtr);
 903             return 0;
 904     }
 905     retval = GET_WORD(ptr);
 906     PUT_WORD( ptr, newval );
 907     WIN_ReleaseWndPtr(wndPtr);
 908     return retval;
 909 }
 910
 911
 912 /***********************************************************************
 913  *              SetClassLong (USER.132)
 914  */
 915 LONG WINAPI SetClassLong16( HWND16 hwnd, INT16 offset, LONG newval )
 916 {
 917     WND *wndPtr;
 918     LONG retval;
 919
 920     TRACE("%x %x %lx\n",hwnd, offset, newval);
 921
 922     switch(offset)
 923     {
 924     case GCL_WNDPROC:
 925         if (!(wndPtr = WIN_FindWndPtr16(hwnd))) return 0;
 926         retval = (LONG)CLASS_SetProc( wndPtr->class, (WNDPROC)newval, WIN_PROC_16 );
 927         WIN_ReleaseWndPtr(wndPtr);
 928         return retval;
 929     case GCL_MENUNAME:
 930         newval = (LONG)MapSL( newval );
 931         /* fall through */
 932     default:
 933         return SetClassLongA( WIN_Handle32(hwnd), offset, newval );
 934     }
 935 }
 936
 937
 938 /***********************************************************************
 939  *              SetClassLongA (USER32.@)
 940  */
 941 LONG WINAPI SetClassLongA( HWND hwnd, INT offset, LONG newval )
 942 {
 943     WND * wndPtr;
 944     LONG retval = 0;
 945     void *ptr;
 946
 947     TRACE("%x %x %lx\n",hwnd, offset, newval);
 948
 949     if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
 950     if (offset >= 0)
 951     {
 952         if (offset + sizeof(LONG) <= wndPtr->class->cbClsExtra)
 953             ptr = (char *)(wndPtr->class + 1) + offset;
 954         else
 955         {
 956             WARN("Invalid offset %d\n", offset );
 957             retval = 0;
 958             goto END;
 959         }
 960     }
 961     else switch(offset)
 962     {
 963         case GCL_MENUNAME:
 964             CLASS_SetMenuNameA( wndPtr->class, (LPCSTR)newval );
 965             retval = 0;  /* Old value is now meaningless anyway */
 966             goto END;
 967         case GCL_WNDPROC:
 968             retval = (LONG)CLASS_SetProc( wndPtr->class, (WNDPROC)newval, WIN_PROC_32A );
 969             goto END;
 970         case GCL_HBRBACKGROUND:
 971             ptr = &wndPtr->class->hbrBackground;
 972             break;
 973         case GCL_HCURSOR:
 974             ptr = &wndPtr->class->hCursor;
 975             break;
 976         case GCL_HICON:
 977             ptr = &wndPtr->class->hIcon;
 978             break;
 979         case GCL_HICONSM:
 980             ptr = &wndPtr->class->hIconSm;
 981             break;
 982         case GCL_STYLE:
 983             ptr = &wndPtr->class->style;
 984             break;
 985         case GCL_CBWNDEXTRA:
 986             ptr = &wndPtr->class->cbWndExtra;
 987             break;
 988         case GCL_CBCLSEXTRA:
 989             ptr = &wndPtr->class->cbClsExtra;
 990             break;
 991         case GCL_HMODULE:
 992             ptr = &wndPtr->class->hInstance;
 993             break;
 994         case GCW_ATOM:
 995             WIN_ReleaseWndPtr(wndPtr);
 996             return SetClassWord( hwnd, offset, newval );
 997         default:
 998             WARN("Invalid offset %d\n", offset );
 999             retval = 0;
1000             goto END;
1001     }
1002     retval = GET_DWORD(ptr);
1003     PUT_DWORD( ptr, newval );
1004 END:
1005     WIN_ReleaseWndPtr(wndPtr);
1006     return retval;
1007 }
1008
1009
1010 /***********************************************************************
1011  *              SetClassLongW (USER32.@)
1012  */
1013 LONG WINAPI SetClassLongW( HWND hwnd, INT offset, LONG newval )
1014 {
1015     WND *wndPtr;
1016     LONG retval;
1017
1018     TRACE("%x %x %lx\n",hwnd, offset, newval);
1019
1020     switch(offset)
1021     {
1022     case GCL_WNDPROC:
1023         if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1024         retval = (LONG)CLASS_SetProc( wndPtr->class, (WNDPROC)newval, WIN_PROC_32W );
1025         WIN_ReleaseWndPtr(wndPtr);
1026         return retval;
1027     case GCL_MENUNAME:
1028         if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1029         CLASS_SetMenuNameW( wndPtr->class, (LPCWSTR)newval );
1030         WIN_ReleaseWndPtr(wndPtr);
1031         return 0;  /* Old value is now meaningless anyway */
1032     default:
1033         return SetClassLongA( hwnd, offset, newval );
1034     }
1035 }
1036
1037
1038 /***********************************************************************
1039  *              GetClassNameA (USER32.@)
1040  */
1041 INT WINAPI GetClassNameA( HWND hwnd, LPSTR buffer, INT count )
1042 {   INT ret;
1043     WND *wndPtr;
1044
1045     if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1046     ret = GlobalGetAtomNameA( wndPtr->class->atomName, buffer, count );
1047
1048     WIN_ReleaseWndPtr(wndPtr);
1049     TRACE("%x %s %x\n",hwnd, buffer, count);
1050     return ret;
1051 }
1052
1053
1054 /***********************************************************************
1055  *              GetClassNameW (USER32.@)
1056  */
1057 INT WINAPI GetClassNameW( HWND hwnd, LPWSTR buffer, INT count )
1058 {   INT ret;
1059     WND *wndPtr;
1060
1061     if (!(wndPtr = WIN_FindWndPtr(hwnd))) return 0;
1062     ret = GlobalGetAtomNameW( wndPtr->class->atomName, buffer, count );
1063     WIN_ReleaseWndPtr(wndPtr);
1064     TRACE("%x %s %x\n",hwnd, debugstr_w(buffer), count);
1065
1066     return ret;
1067 }
1068
1069
1070 /***********************************************************************
1071  *              GetClassInfo (USER.404)
1072  */
1073 BOOL16 WINAPI GetClassInfo16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASS16 *wc )
1074 {
1075     ATOM atom;
1076     CLASS *classPtr;
1077
1078     TRACE("%x %s %p\n",hInstance, debugres_a(MapSL(name)), wc);
1079
1080     hInstance = GetExePtr( hInstance );
1081     if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1082         !(classPtr = CLASS_FindClassByAtom( atom, hInstance )))
1083         return FALSE;
1084     if ((hInstance != classPtr->hInstance) &&
1085         !(classPtr->style & CS_GLOBALCLASS)) /*BWCC likes to pass hInstance=0*/
1086         return FALSE;
1087     wc->style         = (UINT16)classPtr->style;
1088     wc->lpfnWndProc   = CLASS_GetProc( classPtr, WIN_PROC_16 );
1089     wc->cbClsExtra    = (INT16)classPtr->cbClsExtra;
1090     wc->cbWndExtra    = (INT16)classPtr->cbWndExtra;
1091     wc->hInstance     = (HINSTANCE16)classPtr->hInstance;
1092     wc->hIcon         = classPtr->hIcon;
1093     wc->hCursor       = classPtr->hCursor;
1094     wc->hbrBackground = classPtr->hbrBackground;
1095     wc->lpszClassName = name;
1096     wc->lpszMenuName  = (SEGPTR)CLASS_GetMenuNameA( classPtr );
1097     if (HIWORD(wc->lpszMenuName))  /* Make it a SEGPTR */
1098         wc->lpszMenuName = SEGPTR_GET( (LPSTR)wc->lpszMenuName );
1099     return TRUE;
1100 }
1101
1102
1103 /***********************************************************************
1104  *              GetClassInfoA (USER32.@)
1105  */
1106 BOOL WINAPI GetClassInfoA( HINSTANCE hInstance, LPCSTR name,
1107                                WNDCLASSA *wc )
1108 {
1109     ATOM atom;
1110     CLASS *classPtr;
1111
1112     TRACE("%x %p %p\n",hInstance, name, wc);
1113
1114     /* workaround: if hInstance=NULL you expect to get the system classes
1115     but this classes (as example from comctl32.dll SysListView) won't be
1116     registered with hInstance=NULL in WINE because of the late loading
1117     of this dll. fixes file dialogs in WinWord95 (jsch)*/
1118
1119     if (!(atom=GlobalFindAtomA(name)) || !(classPtr=CLASS_FindClassByAtom(atom,hInstance)))
1120         return FALSE;
1121
1122     if (!(classPtr->style & CS_GLOBALCLASS) &&
1123         classPtr->hInstance &&
1124         (hInstance != classPtr->hInstance))
1125     {
1126         if (hInstance) return FALSE;
1127         WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",name);
1128     }
1129
1130     wc->style         = classPtr->style;
1131     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1132     wc->cbClsExtra    = classPtr->cbClsExtra;
1133     wc->cbWndExtra    = classPtr->cbWndExtra;
1134     wc->hInstance     = hInstance;
1135     wc->hIcon         = (HICON)classPtr->hIcon;
1136     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1137     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1138     wc->lpszMenuName  = CLASS_GetMenuNameA( classPtr );
1139     wc->lpszClassName = name;
1140     return TRUE;
1141 }
1142
1143
1144 /***********************************************************************
1145  *              GetClassInfoW (USER32.@)
1146  */
1147 BOOL WINAPI GetClassInfoW( HINSTANCE hInstance, LPCWSTR name,
1148                                WNDCLASSW *wc )
1149 {
1150     ATOM atom;
1151     CLASS *classPtr;
1152
1153     TRACE("%x %p %p\n",hInstance, name, wc);
1154
1155     if (        !(atom=GlobalFindAtomW(name)) ||
1156                 !(classPtr=CLASS_FindClassByAtom(atom,hInstance))
1157     )
1158         return FALSE;
1159
1160     if (!(classPtr->style & CS_GLOBALCLASS) &&
1161         classPtr->hInstance &&
1162         (hInstance != classPtr->hInstance))
1163     {
1164         if (hInstance) return FALSE;
1165         WARN("systemclass %s (hInst=0) demanded but only class with hInst!=0 found\n",debugstr_w(name));
1166     }
1167     wc->style         = classPtr->style;
1168     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1169     wc->cbClsExtra    = classPtr->cbClsExtra;
1170     wc->cbWndExtra    = classPtr->cbWndExtra;
1171     wc->hInstance     = hInstance;
1172     wc->hIcon         = (HICON)classPtr->hIcon;
1173     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1174     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1175     wc->lpszMenuName  = CLASS_GetMenuNameW( classPtr );
1176     wc->lpszClassName = name;
1177     return TRUE;
1178 }
1179
1180
1181 /***********************************************************************
1182  *              GetClassInfoEx (USER.398)
1183  *
1184  * FIXME: this is just a guess, I have no idea if GetClassInfoEx() is the
1185  * same in Win16 as in Win32. --AJ
1186  */
1187 BOOL16 WINAPI GetClassInfoEx16( HINSTANCE16 hInstance, SEGPTR name, WNDCLASSEX16 *wc )
1188 {
1189     ATOM atom;
1190     CLASS *classPtr;
1191
1192     TRACE("%x %s %p\n",hInstance,debugres_a( MapSL(name) ), wc);
1193
1194     hInstance = GetExePtr( hInstance );
1195     if (!(atom = GlobalFindAtomA( MapSL(name) )) ||
1196         !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1197         (hInstance != classPtr->hInstance)) return FALSE;
1198     wc->style         = classPtr->style;
1199     wc->lpfnWndProc   = CLASS_GetProc( classPtr, WIN_PROC_16 );
1200     wc->cbClsExtra    = (INT16)classPtr->cbClsExtra;
1201     wc->cbWndExtra    = (INT16)classPtr->cbWndExtra;
1202     wc->hInstance     = (HINSTANCE16)classPtr->hInstance;
1203     wc->hIcon         = classPtr->hIcon;
1204     wc->hIconSm       = classPtr->hIconSm;
1205     wc->hCursor       = classPtr->hCursor;
1206     wc->hbrBackground = classPtr->hbrBackground;
1207     wc->lpszClassName = (SEGPTR)0;
1208     wc->lpszMenuName  = (SEGPTR)CLASS_GetMenuNameA( classPtr );
1209     if (HIWORD(wc->lpszMenuName))  /* Make it a SEGPTR */
1210         wc->lpszMenuName = SEGPTR_GET( (LPSTR)wc->lpszMenuName );
1211     wc->lpszClassName  = name;
1212
1213     /* We must return the atom of the class here instead of just TRUE. */
1214     return atom;
1215 }
1216
1217
1218 /***********************************************************************
1219  *              GetClassInfoExA (USER32.@)
1220  */
1221 BOOL WINAPI GetClassInfoExA( HINSTANCE hInstance, LPCSTR name,
1222                                  WNDCLASSEXA *wc )
1223 {
1224     ATOM atom;
1225     CLASS *classPtr;
1226
1227     TRACE("%x %p %p\n",hInstance, name, wc);
1228
1229     if (!(atom = GlobalFindAtomA( name )) ||
1230         !(classPtr = CLASS_FindClassByAtom( atom, hInstance ))
1231         /*|| (hInstance != classPtr->hInstance) */ ) return FALSE;
1232     wc->style         = classPtr->style;
1233     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32A );
1234     wc->cbClsExtra    = classPtr->cbClsExtra;
1235     wc->cbWndExtra    = classPtr->cbWndExtra;
1236     wc->hInstance     = classPtr->hInstance;
1237     wc->hIcon         = (HICON)classPtr->hIcon;
1238     wc->hIconSm       = (HICON)classPtr->hIconSm;
1239     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1240     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1241     wc->lpszMenuName  = CLASS_GetMenuNameA( classPtr );
1242     wc->lpszClassName = name;
1243
1244     /* We must return the atom of the class here instead of just TRUE. */
1245     return atom;
1246 }
1247
1248
1249 /***********************************************************************
1250  *              GetClassInfoExW (USER32.@)
1251  */
1252 BOOL WINAPI GetClassInfoExW( HINSTANCE hInstance, LPCWSTR name,
1253                                  WNDCLASSEXW *wc )
1254 {
1255     ATOM atom;
1256     CLASS *classPtr;
1257
1258     TRACE("%x %p %p\n",hInstance, name, wc);
1259
1260     if (!(atom = GlobalFindAtomW( name )) ||
1261         !(classPtr = CLASS_FindClassByAtom( atom, hInstance )) ||
1262         (hInstance != classPtr->hInstance)) return FALSE;
1263     wc->style         = classPtr->style;
1264     wc->lpfnWndProc   = (WNDPROC)CLASS_GetProc( classPtr, WIN_PROC_32W );
1265     wc->cbClsExtra    = classPtr->cbClsExtra;
1266     wc->cbWndExtra    = classPtr->cbWndExtra;
1267     wc->hInstance     = classPtr->hInstance;
1268     wc->hIcon         = (HICON)classPtr->hIcon;
1269     wc->hIconSm       = (HICON)classPtr->hIconSm;
1270     wc->hCursor       = (HCURSOR)classPtr->hCursor;
1271     wc->hbrBackground = (HBRUSH)classPtr->hbrBackground;
1272     wc->lpszMenuName  = CLASS_GetMenuNameW( classPtr );
1273     wc->lpszClassName = name;
1274
1275     /* We must return the atom of the class here instead of just TRUE. */
1276     return atom;
1277 }
1278
1279
1280 #if 0  /* toolhelp is in kernel, so this cannot work */
1281
1282 /***********************************************************************
1283  *              ClassFirst (TOOLHELP.69)
1284  */
1285 BOOL16 WINAPI ClassFirst16( CLASSENTRY *pClassEntry )
1286 {
1287     TRACE("%p\n",pClassEntry);
1288     pClassEntry->wNext = 1;
1289     return ClassNext16( pClassEntry );
1290 }
1291
1292
1293 /***********************************************************************
1294  *              ClassNext (TOOLHELP.70)
1295  */
1296 BOOL16 WINAPI ClassNext16( CLASSENTRY *pClassEntry )
1297 {
1298     int i;
1299     CLASS *class = firstClass;
1300
1301     TRACE("%p\n",pClassEntry);
1302
1303     if (!pClassEntry->wNext) return FALSE;
1304     for (i = 1; (i < pClassEntry->wNext) && class; i++) class = class->next;
1305     if (!class)
1306     {
1307         pClassEntry->wNext = 0;
1308         return FALSE;
1309     }
1310     pClassEntry->hInst = class->hInstance;
1311     pClassEntry->wNext++;
1312     GlobalGetAtomNameA( class->atomName, pClassEntry->szClassName,
1313                           sizeof(pClassEntry->szClassName) );
1314     return TRUE;
1315 }
1316 #endif