dlls/user32/tests/class.c

   1 /* Unit test suite for window classes.
   2  *
   3  * Copyright 2002 Mike McCormack
   4  * Copyright 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 /* To get CS_DROPSHADOW with the MSVC headers */
  22 #define _WIN32_WINNT 0x0501
  23
  24 #include <assert.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28
  29 #include "wine/test.h"
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "winreg.h"
  33 #include "wingdi.h"
  34 #include "winuser.h"
  35
  36 /* we don't want to include commctrl.h: */
  37 static const CHAR WC_EDITA[] = "Edit";
  38 static const WCHAR WC_EDITW[] = {'E','d','i','t',0};
  39
  40 #define NUMCLASSWORDS 4
  41
  42 #define IS_WNDPROC_HANDLE(x) (((ULONG_PTR)(x) >> 16) == (~0u >> 16))
  43
  44 static LRESULT WINAPI ClassTest_WndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  45 {
  46     if (msg == WM_NCCREATE) return 1;
  47     return DefWindowProcW (hWnd, msg, wParam, lParam);
  48 }
  49
  50 static LRESULT WINAPI ClassTest_WndProc2 (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  51 {
  52     if (msg == WM_NCCREATE) return 1;
  53     return DefWindowProcA (hWnd, msg, wParam, lParam);
  54 }
  55
  56 /***********************************************************************
  57  */
  58 static void ClassTest(HINSTANCE hInstance, BOOL global)
  59 {
  60     WNDCLASSW cls, wc;
  61     static const WCHAR className[] = {'T','e','s','t','C','l','a','s','s',0};
  62     static const WCHAR winName[]   = {'W','i','n','C','l','a','s','s','T','e','s','t',0};
  63     ATOM test_atom;
  64     HWND hTestWnd;
  65     LONG i;
  66     WCHAR str[20];
  67     ATOM classatom;
  68
  69     cls.style         = CS_HREDRAW | CS_VREDRAW | (global?CS_GLOBALCLASS:0);
  70     cls.lpfnWndProc   = ClassTest_WndProc;
  71     cls.cbClsExtra    = NUMCLASSWORDS*sizeof(DWORD);
  72     cls.cbWndExtra    = 12;
  73     cls.hInstance     = hInstance;
  74     cls.hIcon         = LoadIconW (0, (LPWSTR)IDI_APPLICATION);
  75     cls.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
  76     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
  77     cls.lpszMenuName  = 0;
  78     cls.lpszClassName = className;
  79
  80     classatom=RegisterClassW(&cls);
  81     if (!classatom && GetLastError()==ERROR_CALL_NOT_IMPLEMENTED)
  82         return;
  83     ok(classatom, "failed to register class\n");
  84
  85     ok(!RegisterClassW (&cls),
  86         "RegisterClass of the same class should fail for the second time\n");
  87
  88     /* Setup windows */
  89     hTestWnd = CreateWindowW (className, winName,
  90        WS_OVERLAPPEDWINDOW + WS_HSCROLL + WS_VSCROLL,
  91        CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, 0,
  92        0, hInstance, 0);
  93
  94     ok(hTestWnd!=0, "Failed to create window\n");
  95
  96     /* test initial values of valid classwords */
  97     for(i=0; i<NUMCLASSWORDS; i++)
  98     {
  99         SetLastError(0);
 100         ok(!GetClassLongW(hTestWnd,i*sizeof (DWORD)),
 101             "GetClassLongW initial value nonzero!\n");
 102         ok(!GetLastError(),
 103             "GetClassLongW failed!\n");
 104     }
 105
 106     if (0)
 107     {
 108     /*
 109      *  GetClassLongW(hTestWnd, NUMCLASSWORDS*sizeof(DWORD))
 110      *  does not fail on Win 98, though MSDN says it should
 111      */
 112     SetLastError(0);
 113     GetClassLongW(hTestWnd, NUMCLASSWORDS*sizeof(DWORD));
 114     ok(GetLastError(),
 115         "GetClassLongW() with invalid offset did not fail\n");
 116     }
 117
 118     /* set values of valid class words */
 119     for(i=0; i<NUMCLASSWORDS; i++)
 120     {
 121         SetLastError(0);
 122         ok(!SetClassLongW(hTestWnd,i*sizeof(DWORD),i+1),
 123             "GetClassLongW(%d) initial value nonzero!\n",i);
 124         ok(!GetLastError(),
 125             "SetClassLongW(%d) failed!\n",i);
 126     }
 127
 128     /* test values of valid classwords that we set */
 129     for(i=0; i<NUMCLASSWORDS; i++)
 130     {
 131         SetLastError(0);
 132         ok( (i+1) == GetClassLongW(hTestWnd,i*sizeof (DWORD)),
 133             "GetClassLongW value doesn't match what was set!\n");
 134         ok(!GetLastError(),
 135             "GetClassLongW failed!\n");
 136     }
 137
 138     /* check GetClassName */
 139     i = GetClassNameW(hTestWnd, str, sizeof(str)/sizeof(str[0]));
 140     ok(i == lstrlenW(className),
 141         "GetClassName returned incorrect length\n");
 142     ok(!lstrcmpW(className,str),
 143         "GetClassName returned incorrect name for this window's class\n");
 144
 145     /* check GetClassInfo with our hInstance */
 146     if((test_atom = GetClassInfoW(hInstance, str, &wc)))
 147     {
 148         ok(test_atom == classatom,
 149             "class atom did not match\n");
 150         ok(wc.cbClsExtra == cls.cbClsExtra,
 151             "cbClsExtra did not match\n");
 152         ok(wc.cbWndExtra == cls.cbWndExtra,
 153             "cbWndExtra did not match\n");
 154         ok(wc.hbrBackground == cls.hbrBackground,
 155             "hbrBackground did not match\n");
 156         ok(wc.hCursor== cls.hCursor,
 157             "hCursor did not match\n");
 158         ok(wc.hInstance== cls.hInstance,
 159             "hInstance did not match\n");
 160     }
 161     else
 162         ok(FALSE,"GetClassInfo (hinstance) failed!\n");
 163
 164     /* check GetClassInfo with zero hInstance */
 165     if(global)
 166     {
 167         if((test_atom = GetClassInfoW(0, str, &wc)))
 168         {
 169             ok(test_atom == classatom,
 170                 "class atom did not match %x != %x\n", test_atom, classatom);
 171             ok(wc.cbClsExtra == cls.cbClsExtra,
 172                 "cbClsExtra did not match %x!=%x\n",wc.cbClsExtra,cls.cbClsExtra);
 173             ok(wc.cbWndExtra == cls.cbWndExtra,
 174                 "cbWndExtra did not match %x!=%x\n",wc.cbWndExtra,cls.cbWndExtra);
 175             ok(wc.hbrBackground == cls.hbrBackground,
 176                 "hbrBackground did not match %p!=%p\n",wc.hbrBackground,cls.hbrBackground);
 177             ok(wc.hCursor== cls.hCursor,
 178                 "hCursor did not match %p!=%p\n",wc.hCursor,cls.hCursor);
 179             ok(!wc.hInstance,
 180                 "hInstance not zero for global class %p\n",wc.hInstance);
 181         }
 182         else
 183             ok(FALSE,"GetClassInfo (0) failed for global class!\n");
 184     }
 185     else
 186     {
 187         ok(!GetClassInfoW(0, str, &wc),
 188             "GetClassInfo (0) succeeded for local class!\n");
 189     }
 190
 191     ok(!UnregisterClassW(className, hInstance),
 192         "Unregister class succeeded with window existing\n");
 193
 194     ok(DestroyWindow(hTestWnd),
 195         "DestroyWindow() failed!\n");
 196
 197     ok(UnregisterClassW(className, hInstance),
 198         "UnregisterClass() failed\n");
 199
 200     return;
 201 }
 202
 203 static void check_style( const char *name, int must_exist, UINT style, UINT ignore )
 204 {
 205     WNDCLASS wc;
 206
 207     if (GetClassInfo( 0, name, &wc ))
 208     {
 209         ok( !(~wc.style & style & ~ignore), "System class %s is missing bits %x (%08x/%08x)\n",
 210             name, ~wc.style & style, wc.style, style );
 211         ok( !(wc.style & ~style), "System class %s has extra bits %x (%08x/%08x)\n",
 212             name, wc.style & ~style, wc.style, style );
 213     }
 214     else
 215         ok( !must_exist, "System class %s does not exist\n", name );
 216 }
 217
 218 /* test styles of system classes */
 219 static void test_styles(void)
 220 {
 221     /* check style bits */
 222     check_style( "Button",     1, CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, 0 );
 223     check_style( "ComboBox",   1, CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, 0 );
 224     check_style( "Edit",       1, CS_PARENTDC | CS_DBLCLKS, 0 );
 225     check_style( "ListBox",    1, CS_PARENTDC | CS_DBLCLKS, CS_PARENTDC /*FIXME*/ );
 226     check_style( "MDIClient",  1, 0, 0 );
 227     check_style( "ScrollBar",  1, CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, 0 );
 228     check_style( "Static",     1, CS_PARENTDC | CS_DBLCLKS, 0 );
 229     check_style( "ComboLBox",  1, CS_SAVEBITS | CS_DBLCLKS, 0 );
 230     check_style( "DDEMLEvent", 0, 0, 0 );
 231     check_style( "Message",    0, 0, 0 );
 232     check_style( "#32768",     1, CS_DROPSHADOW | CS_SAVEBITS | CS_DBLCLKS, CS_DROPSHADOW );  /* menu */
 233     check_style( "#32769",     1, CS_DBLCLKS, 0 );  /* desktop */
 234     check_style( "#32770",     1, CS_SAVEBITS | CS_DBLCLKS, 0 );  /* dialog */
 235     todo_wine { check_style( "#32771",     1, CS_SAVEBITS | CS_HREDRAW | CS_VREDRAW, 0 ); } /* task switch */
 236     check_style( "#32772",     1, 0, 0 );  /* icon title */
 237 }
 238
 239 static void check_class_(int line, HINSTANCE inst, const char *name, const char *menu_name)
 240 {
 241     WNDCLASS wc;
 242     UINT atom = GetClassInfo(inst,name,&wc);
 243     ok_(__FILE__,line)( atom, "Class %s %p not found\n", name, inst );
 244     if (atom)
 245     {
 246         if (wc.lpszMenuName && menu_name)
 247             ok_(__FILE__,line)( !strcmp( menu_name, wc.lpszMenuName ),
 248                                 "Wrong name %s/%s for class %s %p\n",
 249                                 wc.lpszMenuName, menu_name, name, inst );
 250         else
 251             ok_(__FILE__,line)( !menu_name == !wc.lpszMenuName, "Wrong name %p/%p for class %s %p\n",
 252                                 wc.lpszMenuName, menu_name, name, inst );
 253     }
 254 }
 255 #define check_class(inst,name,menu) check_class_(__LINE__,inst,name,menu)
 256
 257 static void check_instance_( int line, const char *name, HINSTANCE inst,
 258                              HINSTANCE info_inst, HINSTANCE gcl_inst )
 259 {
 260     WNDCLASSA wc;
 261     HWND hwnd;
 262
 263     ok_(__FILE__,line)( GetClassInfo( inst, name, &wc ), "Couldn't find class %s inst %p\n", name, inst );
 264     ok_(__FILE__,line)( wc.hInstance == info_inst, "Wrong info instance %p/%p for class %s\n",
 265                         wc.hInstance, info_inst, name );
 266     hwnd = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, inst, 0 );
 267     ok_(__FILE__,line)( hwnd != NULL, "Couldn't create window for class %s inst %p\n", name, inst );
 268     ok_(__FILE__,line)( (HINSTANCE)GetClassLongPtrA( hwnd, GCLP_HMODULE ) == gcl_inst,
 269                         "Wrong GCL instance %p/%p for class %s\n",
 270         (HINSTANCE)GetClassLongPtrA( hwnd, GCLP_HMODULE ), gcl_inst, name );
 271     ok_(__FILE__,line)( (HINSTANCE)GetWindowLongPtrA( hwnd, GWLP_HINSTANCE ) == inst,
 272                         "Wrong GWL instance %p/%p for window %s\n",
 273         (HINSTANCE)GetWindowLongPtrA( hwnd, GWLP_HINSTANCE ), inst, name );
 274     ok_(__FILE__,line)(!UnregisterClassA(name, inst),
 275                        "UnregisterClassA should fail while exists a class window\n");
 276     ok_(__FILE__,line)(GetLastError() == ERROR_CLASS_HAS_WINDOWS,
 277                        "GetLastError() should be set to ERROR_CLASS_HAS_WINDOWS not %d\n", GetLastError());
 278     DestroyWindow(hwnd);
 279 }
 280 #define check_instance(name,inst,info_inst,gcl_inst) check_instance_(__LINE__,name,inst,info_inst,gcl_inst)
 281
 282 struct class_info
 283 {
 284     const char *name;
 285     HINSTANCE inst, info_inst, gcl_inst;
 286 };
 287
 288 static DWORD WINAPI thread_proc(void *param)
 289 {
 290     struct class_info *class_info = param;
 291
 292     check_instance(class_info->name, class_info->inst, class_info->info_inst, class_info->gcl_inst);
 293
 294     return 0;
 295 }
 296
 297 static void check_thread_instance( const char *name, HINSTANCE inst, HINSTANCE info_inst, HINSTANCE gcl_inst )
 298 {
 299     HANDLE hThread;
 300     DWORD tid;
 301     struct class_info class_info;
 302
 303     class_info.name = name;
 304     class_info.inst = inst;
 305     class_info.info_inst = info_inst;
 306     class_info.gcl_inst = gcl_inst;
 307
 308     hThread = CreateThread(NULL, 0, thread_proc, &class_info, 0, &tid);
 309     ok(hThread != NULL, "CreateThread failed, error %d\n", GetLastError());
 310     ok(WaitForSingleObject(hThread, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");
 311     CloseHandle(hThread);
 312 }
 313
 314 /* test various instance parameters */
 315 static void test_instances(void)
 316 {
 317     WNDCLASSA cls, wc;
 318     HWND hwnd, hwnd2;
 319     const char *name = "__test__";
 320     HINSTANCE kernel32 = GetModuleHandleA("kernel32");
 321     HINSTANCE user32 = GetModuleHandleA("user32");
 322     HINSTANCE main_module = GetModuleHandleA(NULL);
 323     DWORD r;
 324     char buffer[0x10];
 325
 326     memset( &cls, 0, sizeof(cls) );
 327     cls.style         = CS_HREDRAW | CS_VREDRAW;
 328     cls.lpfnWndProc   = ClassTest_WndProc;
 329     cls.cbClsExtra    = 0;
 330     cls.cbWndExtra    = 0;
 331     cls.lpszClassName = name;
 332
 333     cls.lpszMenuName  = "main_module";
 334     cls.hInstance = main_module;
 335
 336     ok( RegisterClassA( &cls ), "Failed to register local class for main module\n" );
 337     check_class( main_module, name, "main_module" );
 338     check_instance( name, main_module, main_module, main_module );
 339     check_thread_instance( name, main_module, main_module, main_module );
 340
 341     cls.lpszMenuName  = "kernel32";
 342     cls.hInstance = kernel32;
 343     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 344     check_class( kernel32, name, "kernel32" );
 345     check_class( main_module, name, "main_module" );
 346     check_instance( name, kernel32, kernel32, kernel32 );
 347     check_thread_instance( name, kernel32, kernel32, kernel32 );
 348     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 349
 350     /* Bug 2631 - Supplying an invalid number of bytes fails */
 351     cls.cbClsExtra    = 0;
 352     cls.cbWndExtra    = -1;
 353     SetLastError(0xdeadbeef);
 354     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 355           "Failed with invalid number of WndExtra bytes\n");
 356
 357     cls.cbClsExtra    = -1;
 358     cls.cbWndExtra    = 0;
 359     SetLastError(0xdeadbeef);
 360     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 361           "Failed with invalid number of ClsExtra bytes\n");
 362
 363     cls.cbClsExtra    = -1;
 364     cls.cbWndExtra    = -1;
 365     SetLastError(0xdeadbeef);
 366     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 367           "Failed with invalid number of ClsExtra and cbWndExtra bytes\n");
 368
 369     cls.cbClsExtra    = 0;
 370     cls.cbWndExtra    = 0;
 371     SetLastError(0xdeadbeef);
 372
 373     /* setting global flag doesn't change status of class */
 374     hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 375     ok( hwnd != 0, "CreateWindow failed error %u\n", GetLastError());
 376     SetClassLongA( hwnd, GCL_STYLE, CS_GLOBALCLASS );
 377     cls.lpszMenuName  = "kernel32";
 378     cls.hInstance = kernel32;
 379     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 380     check_class( kernel32, name, "kernel32" );
 381     check_class( main_module, name, "main_module" );
 382     check_instance( name, kernel32, kernel32, kernel32 );
 383     check_instance( name, main_module, main_module, main_module );
 384     check_thread_instance( name, kernel32, kernel32, kernel32 );
 385     check_thread_instance( name, main_module, main_module, main_module );
 386     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 387
 388     /* changing the instance doesn't make it global */
 389     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0 );
 390     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 391     check_class( kernel32, name, "kernel32" );
 392     check_instance( name, kernel32, kernel32, kernel32 );
 393     check_thread_instance( name, kernel32, kernel32, kernel32 );
 394     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 395     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 396
 397     /* GetClassInfo with instance 0 finds user32 instance */
 398     SetClassLongPtrA( hwnd, GCLP_HMODULE, (LONG_PTR)user32 );
 399     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 400     check_class( kernel32, name, "kernel32" );
 401     check_class( user32, name, "main_module" );
 402     check_class( 0, name, "main_module" );
 403     check_instance( name, kernel32, kernel32, kernel32 );
 404     check_instance( name, user32, 0, user32 );
 405     check_instance( name, 0, 0, kernel32 );
 406     check_thread_instance( name, kernel32, kernel32, kernel32 );
 407     check_thread_instance( name, user32, 0, user32 );
 408     check_thread_instance( name, 0, 0, kernel32 );
 409     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 410
 411     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0x12345678 );
 412     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 413     check_class( kernel32, name, "kernel32" );
 414     check_class( (HINSTANCE)0x12345678, name, "main_module" );
 415     check_instance( name, kernel32, kernel32, kernel32 );
 416     check_instance( name, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678 );
 417     check_thread_instance( name, kernel32, kernel32, kernel32 );
 418     check_thread_instance( name, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678 );
 419     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 420
 421     /* creating a window with instance 0 uses the first class found */
 422     cls.hInstance = (HINSTANCE)0xdeadbeef;
 423     cls.lpszMenuName = "deadbeef";
 424     cls.style = 3;
 425     ok( RegisterClassA( &cls ), "Failed to register local class for deadbeef\n" );
 426     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 427     ok( GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == 0xdeadbeef,
 428         "Didn't get deadbeef class for null instance\n" );
 429     DestroyWindow( hwnd2 );
 430     ok( UnregisterClassA( name, (HINSTANCE)0xdeadbeef ), "Unregister failed for deadbeef\n" );
 431
 432     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 433     ok( (HINSTANCE)GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == kernel32,
 434         "Didn't get kernel32 class for null instance\n" );
 435     DestroyWindow( hwnd2 );
 436
 437     r = GetClassName( hwnd, buffer, 4 );
 438     ok( r == 3, "expected 3, got %d\n", r );
 439     ok( !strcmp( buffer, "__t"), "name wrong: %s\n", buffer );
 440
 441     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 442
 443     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 444     ok( GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == 0x12345678,
 445         "Didn't get 12345678 class for null instance\n" );
 446     DestroyWindow( hwnd2 );
 447
 448     SetClassLongPtrA( hwnd, GCLP_HMODULE, (LONG_PTR)main_module );
 449     DestroyWindow( hwnd );
 450
 451     /* null handle means the same thing as main module */
 452     cls.lpszMenuName  = "null";
 453     cls.hInstance = 0;
 454     ok( !RegisterClassA( &cls ), "Succeeded registering local class for null instance\n" );
 455     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 456     ok( UnregisterClassA( name, main_module ), "Unregister failed for main module\n" );
 457
 458     ok( RegisterClassA( &cls ), "Failed to register local class for null instance\n" );
 459     /* must be found with main module handle */
 460     check_class( main_module, name, "null" );
 461     check_instance( name, main_module, main_module, main_module );
 462     check_thread_instance( name, main_module, main_module, main_module );
 463     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 464     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 465     ok( UnregisterClassA( name, 0 ), "Unregister failed for null instance\n" );
 466
 467     /* registering for user32 always fails */
 468     cls.lpszMenuName = "user32";
 469     cls.hInstance = user32;
 470     ok( !RegisterClassA( &cls ), "Succeeded registering local class for user32\n" );
 471     ok( GetLastError() == ERROR_INVALID_PARAMETER, "Wrong error code %d\n", GetLastError() );
 472     cls.style |= CS_GLOBALCLASS;
 473     ok( !RegisterClassA( &cls ), "Succeeded registering global class for user32\n" );
 474     ok( GetLastError() == ERROR_INVALID_PARAMETER, "Wrong error code %d\n", GetLastError() );
 475
 476     /* unregister is OK though */
 477     cls.hInstance = main_module;
 478     ok( RegisterClassA( &cls ), "Failed to register global class for main module\n" );
 479     ok( UnregisterClassA( name, user32 ), "Unregister failed for user32\n" );
 480
 481     /* instance doesn't matter for global class */
 482     cls.style |= CS_GLOBALCLASS;
 483     cls.lpszMenuName  = "main_module";
 484     cls.hInstance = main_module;
 485     ok( RegisterClassA( &cls ), "Failed to register global class for main module\n" );
 486     cls.lpszMenuName  = "kernel32";
 487     cls.hInstance = kernel32;
 488     ok( !RegisterClassA( &cls ), "Succeeded registering local class for kernel32\n" );
 489     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 490     /* even if global flag is cleared */
 491     hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 492     SetClassLongA( hwnd, GCL_STYLE, 0 );
 493     ok( !RegisterClassA( &cls ), "Succeeded registering local class for kernel32\n" );
 494     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 495
 496     check_class( main_module, name, "main_module" );
 497     check_class( kernel32, name, "main_module" );
 498     check_class( 0, name, "main_module" );
 499     check_class( (HINSTANCE)0x12345678, name, "main_module" );
 500     check_instance( name, main_module, main_module, main_module );
 501     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, main_module );
 502     check_thread_instance( name, main_module, main_module, main_module );
 503     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, main_module );
 504
 505     /* changing the instance for global class doesn't make much difference */
 506     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0xdeadbeef );
 507     check_instance( name, main_module, main_module, (HINSTANCE)0xdeadbeef );
 508     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef );
 509     check_thread_instance( name, main_module, main_module, (HINSTANCE)0xdeadbeef );
 510     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef );
 511
 512     DestroyWindow( hwnd );
 513     ok( UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister failed for main module global\n" );
 514     ok( !UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister succeeded the second time\n" );
 515     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 516
 517     cls.hInstance = (HINSTANCE)0x12345678;
 518     ok( RegisterClassA( &cls ), "Failed to register global class for dummy instance\n" );
 519     check_instance( name, main_module, main_module, (HINSTANCE)0x12345678 );
 520     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0x12345678 );
 521     check_thread_instance( name, main_module, main_module, (HINSTANCE)0x12345678 );
 522     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0x12345678 );
 523     ok( UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister failed for main module global\n" );
 524
 525     /* check system classes */
 526
 527     /* we cannot register a global class with the name of a system class */
 528     cls.style |= CS_GLOBALCLASS;
 529     cls.lpszMenuName  = "button_main_module";
 530     cls.lpszClassName = "BUTTON";
 531     cls.hInstance = main_module;
 532     ok( !RegisterClassA( &cls ), "Succeeded registering global button class for main module\n" );
 533     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 534     cls.hInstance = kernel32;
 535     ok( !RegisterClassA( &cls ), "Succeeded registering global button class for kernel32\n" );
 536     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 537
 538     /* local class is OK however */
 539     cls.style &= ~CS_GLOBALCLASS;
 540     cls.lpszMenuName  = "button_main_module";
 541     cls.hInstance = main_module;
 542     ok( RegisterClassA( &cls ), "Failed to register local button class for main module\n" );
 543     check_class( main_module, "BUTTON", "button_main_module" );
 544     cls.lpszMenuName  = "button_kernel32";
 545     cls.hInstance = kernel32;
 546     ok( RegisterClassA( &cls ), "Failed to register local button class for kernel32\n" );
 547     check_class( kernel32, "BUTTON", "button_kernel32" );
 548     check_class( main_module, "BUTTON", "button_main_module" );
 549     ok( UnregisterClassA( "BUTTON", kernel32 ), "Unregister failed for kernel32 button\n" );
 550     ok( UnregisterClassA( "BUTTON", main_module ), "Unregister failed for main module button\n" );
 551     /* GetClassInfo sets instance to passed value for global classes */
 552     check_instance( "BUTTON", 0, 0, user32 );
 553     check_instance( "BUTTON", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 554     check_instance( "BUTTON", user32, 0, user32 );
 555     check_thread_instance( "BUTTON", 0, 0, user32 );
 556     check_thread_instance( "BUTTON", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 557     check_thread_instance( "BUTTON", user32, 0, user32 );
 558
 559     /* we can unregister system classes */
 560     ok( GetClassInfo( 0, "BUTTON", &wc ), "Button class not found with null instance\n" );
 561     ok( GetClassInfo( kernel32, "BUTTON", &wc ), "Button class not found with kernel32\n" );
 562     ok( UnregisterClass( "BUTTON", (HINSTANCE)0x12345678 ), "Failed to unregister button\n" );
 563     ok( !UnregisterClass( "BUTTON", (HINSTANCE)0x87654321 ), "Unregistered button a second time\n" );
 564     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 565     ok( !GetClassInfo( 0, "BUTTON", &wc ), "Button still exists\n" );
 566     /* last error not set reliably */
 567
 568     /* we can change the instance of a system class */
 569     check_instance( "EDIT", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 570     check_thread_instance( "EDIT", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 571     hwnd = CreateWindowExA( 0, "EDIT", "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 572     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0xdeadbeef );
 573     check_instance( "EDIT", (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0xdeadbeef );
 574     check_thread_instance( "EDIT", (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0xdeadbeef );
 575     DestroyWindow(hwnd);
 576 }
 577
 578 static void test_builtinproc(void)
 579 {
 580     /* Edit behaves differently */
 581     static const CHAR NORMAL_CLASSES[][10] = {
 582         "Button",
 583         "Static",
 584         "ComboBox",
 585         "ComboLBox",
 586         "ListBox",
 587         "ScrollBar",
 588         "#32770",  /* dialog */
 589     };
 590     static const int NUM_NORMAL_CLASSES = (sizeof(NORMAL_CLASSES)/sizeof(NORMAL_CLASSES[0]));
 591     static const char classA[] = "deftest";
 592     static const WCHAR classW[] = {'d','e','f','t','e','s','t',0};
 593     WCHAR unistring[] = {0x142, 0x40e, 0x3b4, 0};  /* a string that would be destroyed by a W->A->W conversion */
 594     WNDPROC pDefWindowProcA, pDefWindowProcW;
 595     WNDPROC oldproc;
 596     WNDCLASSEXA cls;  /* the memory layout of WNDCLASSEXA and WNDCLASSEXW is the same */
 597     WCHAR buf[128];
 598     ATOM atom;
 599     HWND hwnd;
 600     int i;
 601
 602     pDefWindowProcA = (void *)GetProcAddress(GetModuleHandle("user32.dll"), "DefWindowProcA");
 603     pDefWindowProcW = (void *)GetProcAddress(GetModuleHandle("user32.dll"), "DefWindowProcW");
 604
 605     for (i = 0; i < 4; i++)
 606     {
 607         ZeroMemory(&cls, sizeof(cls));
 608         cls.cbSize = sizeof(cls);
 609         cls.hInstance = GetModuleHandle(NULL);
 610         cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 611         if (i & 1)
 612             cls.lpfnWndProc = pDefWindowProcA;
 613         else
 614             cls.lpfnWndProc = pDefWindowProcW;
 615
 616         if (i & 2)
 617         {
 618             cls.lpszClassName = classA;
 619             atom = RegisterClassExA(&cls);
 620         }
 621         else
 622         {
 623             cls.lpszClassName = (LPCSTR)classW;
 624             atom = RegisterClassExW((WNDCLASSEXW *)&cls);
 625         }
 626         ok(atom != 0, "Couldn't register class, i=%d, %d\n", i, GetLastError());
 627
 628         hwnd = CreateWindowA(classA, NULL, 0, 0, 0, 100, 100, NULL, NULL, GetModuleHandle(NULL), NULL);
 629         ok(hwnd != NULL, "Couldn't create window i=%d\n", i);
 630
 631         ok(GetWindowLongPtrA(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA, "Wrong ANSI wndproc: %p vs %p\n",
 632             (void *)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), pDefWindowProcA);
 633         ok(GetClassLongPtrA(hwnd, GCLP_WNDPROC) == (ULONG_PTR)pDefWindowProcA, "Wrong ANSI wndproc: %p vs %p\n",
 634             (void *)GetClassLongPtrA(hwnd, GCLP_WNDPROC), pDefWindowProcA);
 635
 636         ok(GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcW, "Wrong Unicode wndproc: %p vs %p\n",
 637             (void *)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), pDefWindowProcW);
 638         ok(GetClassLongPtrW(hwnd, GCLP_WNDPROC) == (ULONG_PTR)pDefWindowProcW, "Wrong Unicode wndproc: %p vs %p\n",
 639             (void *)GetClassLongPtrW(hwnd, GCLP_WNDPROC), pDefWindowProcW);
 640
 641         DestroyWindow(hwnd);
 642         UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 643     }
 644
 645     /* built-in winproc - window A/W type automatically detected */
 646     ZeroMemory(&cls, sizeof(cls));
 647     cls.cbSize = sizeof(cls);
 648     cls.hInstance = GetModuleHandle(NULL);
 649     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 650     cls.lpszClassName = classA;
 651     cls.lpfnWndProc = pDefWindowProcW;
 652     atom = RegisterClassExA(&cls);
 653
 654     hwnd = CreateWindowExW(0, classW, NULL, WS_OVERLAPPEDWINDOW,
 655         CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
 656     ok(IsWindowUnicode(hwnd), "Windows should be Unicode\n");
 657     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)pDefWindowProcA);
 658     ok(IsWindowUnicode(hwnd), "Windows should have remained Unicode\n");
 659     ok(GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcW, "Invalid ANSI winproc\n");
 660     ok(GetWindowLongPtrA(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA, "Invalid Unicode winproc\n");
 661     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 662     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have switched window to ANSI\n");
 663
 664     DestroyWindow(hwnd);
 665     UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 666
 667     /* custom winproc - the same function can be used as both A and W*/
 668     ZeroMemory(&cls, sizeof(cls));
 669     cls.cbSize = sizeof(cls);
 670     cls.hInstance = GetModuleHandle(NULL);
 671     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 672     cls.lpszClassName = classA;
 673     cls.lpfnWndProc = ClassTest_WndProc2;
 674     atom = RegisterClassExA(&cls);
 675
 676     hwnd = CreateWindowExW(0, classW, NULL, WS_OVERLAPPEDWINDOW,
 677         CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
 678     ok(IsWindowUnicode(hwnd) == FALSE, "Window should be ANSI\n");
 679     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 680     ok(IsWindowUnicode(hwnd), "SetWindowLongPtrW should have changed window to Unicode\n");
 681     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 682     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have changed window to ANSI\n");
 683
 684     DestroyWindow(hwnd);
 685     UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 686
 687     /* For most of the builtin controls both GetWindowLongPtrA and W returns a pointer that is executed directly
 688      * by CallWindowProcA/W */
 689     for (i = 0; i < NUM_NORMAL_CLASSES; i++)
 690     {
 691         WNDPROC procA, procW;
 692         hwnd = CreateWindowExA(0, NORMAL_CLASSES[i], classA, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 680, 260,
 693             NULL, NULL, NULL, 0);
 694         ok(hwnd != NULL, "Couldn't create window of class %s\n", NORMAL_CLASSES[i]);
 695         SetWindowText(hwnd, classA);  /* ComboBox needs this */
 696         procA = (WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC);
 697         procW = (WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC);
 698         ok(!IS_WNDPROC_HANDLE(procA), "procA should not be a handle for %s (%p)\n", NORMAL_CLASSES[i], procA);
 699         ok(!IS_WNDPROC_HANDLE(procW), "procW should not be a handle for %s (%p)\n", NORMAL_CLASSES[i], procW);
 700         CallWindowProcA(procA, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 701         ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT A/A invalid return for class %s\n", NORMAL_CLASSES[i]);
 702         CallWindowProcA(procW, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 703         ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT A/W invalid return for class %s\n", NORMAL_CLASSES[i]);
 704         CallWindowProcW(procA, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 705         ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT W/A invalid return for class %s\n", NORMAL_CLASSES[i]);
 706         CallWindowProcW(procW, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 707         ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT W/W invalid return for class %s\n", NORMAL_CLASSES[i]);
 708
 709         oldproc = (WNDPROC)SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 710         ok(IS_WNDPROC_HANDLE(oldproc) == FALSE, "Class %s shouldn't return a handle\n", NORMAL_CLASSES[i]);
 711         SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 712         DestroyWindow(hwnd);
 713     }
 714
 715     /* Edit controls are special - they return a wndproc handle when GetWindowLongPtr is called with a different A/W.
 716      * On the other hand there is no W->A->W conversion so this control is treated specially. */
 717     hwnd = CreateWindowW(WC_EDITW, unistring, WS_OVERLAPPEDWINDOW,
 718       CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, NULL, 0);
 719     /* GetClassLongPtr returns that both the Unicode and ANSI wndproc */
 720     ok(IS_WNDPROC_HANDLE(GetClassLongPtrA(hwnd, GCLP_WNDPROC)) == FALSE, "Edit control class should have a Unicode wndproc\n");
 721     ok(IS_WNDPROC_HANDLE(GetClassLongPtrW(hwnd, GCLP_WNDPROC)) == FALSE, "Edit control class should have a ANSI wndproc\n");
 722     /* But GetWindowLongPtr returns only a handle for the ANSI one */
 723     ok(IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Edit control should return a wndproc handle\n");
 724     ok(!IS_WNDPROC_HANDLE(GetWindowLongPtrW(hwnd, GWLP_WNDPROC)), "Edit control shouldn't return a W wndproc handle\n");
 725     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 726     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 727     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 728     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 729     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 730     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 731
 732     SetWindowTextW(hwnd, classW);
 733     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 734     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 735
 736     oldproc = (WNDPROC)SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc2);
 737     /* SetWindowLongPtr returns a wndproc handle - like GetWindowLongPtr */
 738     ok(IS_WNDPROC_HANDLE(oldproc), "Edit control should return a wndproc handle\n");
 739     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have changed window to ANSI\n");
 740     SetWindowTextA(hwnd, classA);  /* Windows resets the title to WideStringToMultiByte(unistring) */
 741     memset(buf, 0, sizeof(buf));
 742     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 743     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 744     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 745     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 746     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 747     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 748
 749     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 750     ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT invalid return\n");
 751
 752     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 753
 754     DestroyWindow(hwnd);
 755
 756     hwnd = CreateWindowA(WC_EDITA, classA, WS_OVERLAPPEDWINDOW,
 757       CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, NULL, 0);
 758
 759     /* GetClassLongPtr returns that both the Unicode and ANSI wndproc */
 760     ok(!IS_WNDPROC_HANDLE(GetClassLongPtrA(hwnd, GCLP_WNDPROC)), "Edit control class should have a Unicode wndproc\n");
 761     ok(!IS_WNDPROC_HANDLE(GetClassLongPtrW(hwnd, GCLP_WNDPROC)), "Edit control class should have a ANSI wndproc\n");
 762     /* But GetWindowLongPtr returns only a handle for the Unicode one */
 763     ok(!IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Edit control shouldn't return an A wndproc handle\n");
 764     ok(IS_WNDPROC_HANDLE(GetWindowLongPtrW(hwnd, GWLP_WNDPROC)), "Edit control should return a wndproc handle\n");
 765     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 766     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 767     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 768     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 769     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 770     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 771
 772     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 773     ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT invalid return\n");
 774
 775     oldproc = (WNDPROC)SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 776     SetWindowTextW(hwnd, unistring);
 777     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 778     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 779     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 780     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 781     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 782     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 783
 784     SetWindowTextW(hwnd, classW);
 785     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 786     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 787
 788     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 789
 790     DestroyWindow(hwnd);
 791 }
 792
 793
 794 static LRESULT WINAPI TestDlgProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 795 {
 796     return DefWindowProc(hWnd, uMsg, wParam, lParam);
 797 }
 798
 799 static BOOL RegisterTestDialog(HINSTANCE hInstance)
 800 {
 801     WNDCLASSEX wcx;
 802     ATOM atom = 0;
 803
 804     ZeroMemory(&wcx, sizeof(WNDCLASSEX));
 805     wcx.cbSize = sizeof(wcx);
 806     wcx.lpfnWndProc = TestDlgProc;
 807     wcx.cbClsExtra = 0;
 808     wcx.cbWndExtra = DLGWINDOWEXTRA;
 809     wcx.hInstance = hInstance;
 810     wcx.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 811     wcx.hCursor = LoadCursor(NULL, IDC_ARROW);
 812     wcx.hbrBackground = GetStockObject(WHITE_BRUSH);
 813     wcx.lpszClassName = "TestDialog";
 814     wcx.lpszMenuName =  "TestDialog";
 815     wcx.hIconSm = LoadImage(hInstance, MAKEINTRESOURCE(5), IMAGE_ICON,
 816         GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
 817         LR_DEFAULTCOLOR);
 818
 819     atom = RegisterClassEx(&wcx);
 820     ok(atom != 0, "RegisterClassEx returned 0\n");
 821
 822     return atom;
 823 }
 824
 825 /* test registering a dialog box created by using the CLASS directive in a
 826    resource file, then test creating the dialog using CreateDialogParam. */
 827 static void CreateDialogParamTest(HINSTANCE hInstance)
 828 {
 829     HWND hWndMain;
 830
 831     if (RegisterTestDialog(hInstance))
 832     {
 833         hWndMain = CreateDialogParam(hInstance, "CLASS_TEST_DIALOG", NULL, 0, 0);
 834         ok(hWndMain != NULL, "CreateDialogParam returned NULL\n");
 835         ShowWindow(hWndMain, SW_SHOW);
 836         DestroyWindow(hWndMain);
 837     }
 838 }
 839
 840 static const struct
 841 {
 842     const char name[9];
 843     int value;
 844     int badvalue;
 845 } extra_values[] =
 846 {
 847     {"#32770",30,30}, /* Dialog */
 848 #ifdef _WIN64
 849     {"Edit",8,8},
 850 #else
 851     {"Edit",6,8},     /* Windows XP 64-bit returns 8 also to 32-bit applications */
 852 #endif
 853 };
 854
 855 static void test_extra_values(void)
 856 {
 857     int i;
 858     for(i=0; i< sizeof(extra_values)/sizeof(extra_values[0]); i++)
 859     {
 860         WNDCLASSEX wcx;
 861         BOOL ret = GetClassInfoEx(NULL,extra_values[i].name,&wcx);
 862
 863         ok( ret, "GetClassInfo (0) failed for global class %s\n", extra_values[i].name);
 864         if (!ret) continue;
 865         ok(extra_values[i].value == wcx.cbWndExtra || broken(extra_values[i].badvalue == wcx.cbWndExtra),
 866            "expected %d, got %d\n", extra_values[i].value, wcx.cbWndExtra);
 867     }
 868 }
 869
 870 START_TEST(class)
 871 {
 872     HANDLE hInstance = GetModuleHandleA( NULL );
 873
 874     test_extra_values();
 875
 876     if (!GetModuleHandleW(0))
 877     {
 878         trace("Class test is incompatible with Win9x implementation, skipping\n");
 879         return;
 880     }
 881
 882     ClassTest(hInstance,FALSE);
 883     ClassTest(hInstance,TRUE);
 884     CreateDialogParamTest(hInstance);
 885     test_styles();
 886     test_builtinproc();
 887
 888     /* this test unregisters the Button class so it should be executed at the end */
 889     test_instances();
 890 }