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 <stdlib.h>
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27
  28 #include "wine/test.h"
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winreg.h"
  32 #include "wingdi.h"
  33 #include "winuser.h"
  34
  35 /* we don't want to include commctrl.h: */
  36 static const CHAR WC_EDITA[] = "Edit";
  37 static const WCHAR WC_EDITW[] = {'E','d','i','t',0};
  38
  39 #define NUMCLASSWORDS 4
  40
  41 #define IS_WNDPROC_HANDLE(x) (((ULONG_PTR)(x) >> 16) == (~0u >> 16))
  42
  43 static LRESULT WINAPI ClassTest_WndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  44 {
  45     if (msg == WM_NCCREATE) return 1;
  46     return DefWindowProcW (hWnd, msg, wParam, lParam);
  47 }
  48
  49 static LRESULT WINAPI ClassTest_WndProc2 (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
  50 {
  51     if (msg == WM_NCCREATE) return 1;
  52     return DefWindowProcA (hWnd, msg, wParam, lParam);
  53 }
  54
  55 /***********************************************************************
  56  */
  57 static void ClassTest(HINSTANCE hInstance, BOOL global)
  58 {
  59     WNDCLASSW cls, wc;
  60     static const WCHAR className[] = {'T','e','s','t','C','l','a','s','s',0};
  61     static const WCHAR winName[]   = {'W','i','n','C','l','a','s','s','T','e','s','t',0};
  62     ATOM test_atom;
  63     HWND hTestWnd;
  64     LONG i;
  65     WCHAR str[20];
  66     ATOM classatom;
  67
  68     cls.style         = CS_HREDRAW | CS_VREDRAW | (global?CS_GLOBALCLASS:0);
  69     cls.lpfnWndProc   = ClassTest_WndProc;
  70     cls.cbClsExtra    = NUMCLASSWORDS*sizeof(DWORD);
  71     cls.cbWndExtra    = 12;
  72     cls.hInstance     = hInstance;
  73     cls.hIcon         = LoadIconW (0, (LPWSTR)IDI_APPLICATION);
  74     cls.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
  75     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
  76     cls.lpszMenuName  = 0;
  77     cls.lpszClassName = className;
  78
  79     classatom=RegisterClassW(&cls);
  80     if (!classatom && GetLastError()==ERROR_CALL_NOT_IMPLEMENTED)
  81         return;
  82     ok(classatom, "failed to register class\n");
  83
  84     ok(!RegisterClassW (&cls),
  85         "RegisterClass of the same class should fail for the second time\n");
  86
  87     /* Setup windows */
  88     hTestWnd = CreateWindowW (className, winName,
  89        WS_OVERLAPPEDWINDOW + WS_HSCROLL + WS_VSCROLL,
  90        CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, 0,
  91        0, hInstance, 0);
  92
  93     ok(hTestWnd!=0, "Failed to create window\n");
  94
  95     /* test initial values of valid classwords */
  96     for(i=0; i<NUMCLASSWORDS; i++)
  97     {
  98         SetLastError(0);
  99         ok(!GetClassLongW(hTestWnd,i*sizeof (DWORD)),
 100             "GetClassLongW initial value nonzero!\n");
 101         ok(!GetLastError(),
 102             "GetClassLongW failed!\n");
 103     }
 104
 105     if (0)
 106     {
 107     /*
 108      *  GetClassLongW(hTestWnd, NUMCLASSWORDS*sizeof(DWORD))
 109      *  does not fail on Win 98, though MSDN says it should
 110      */
 111     SetLastError(0);
 112     GetClassLongW(hTestWnd, NUMCLASSWORDS*sizeof(DWORD));
 113     ok(GetLastError(),
 114         "GetClassLongW() with invalid offset did not fail\n");
 115     }
 116
 117     /* set values of valid class words */
 118     for(i=0; i<NUMCLASSWORDS; i++)
 119     {
 120         SetLastError(0);
 121         ok(!SetClassLongW(hTestWnd,i*sizeof(DWORD),i+1),
 122             "GetClassLongW(%d) initial value nonzero!\n",i);
 123         ok(!GetLastError(),
 124             "SetClassLongW(%d) failed!\n",i);
 125     }
 126
 127     /* test values of valid classwords that we set */
 128     for(i=0; i<NUMCLASSWORDS; i++)
 129     {
 130         SetLastError(0);
 131         ok( (i+1) == GetClassLongW(hTestWnd,i*sizeof (DWORD)),
 132             "GetClassLongW value doesn't match what was set!\n");
 133         ok(!GetLastError(),
 134             "GetClassLongW failed!\n");
 135     }
 136
 137     /* check GetClassName */
 138     i = GetClassNameW(hTestWnd, str, sizeof(str)/sizeof(str[0]));
 139     ok(i == lstrlenW(className),
 140         "GetClassName returned incorrect length\n");
 141     ok(!lstrcmpW(className,str),
 142         "GetClassName returned incorrect name for this window's class\n");
 143
 144     /* check GetClassInfo with our hInstance */
 145     if((test_atom = GetClassInfoW(hInstance, str, &wc)))
 146     {
 147         ok(test_atom == classatom,
 148             "class atom did not match\n");
 149         ok(wc.cbClsExtra == cls.cbClsExtra,
 150             "cbClsExtra did not match\n");
 151         ok(wc.cbWndExtra == cls.cbWndExtra,
 152             "cbWndExtra did not match\n");
 153         ok(wc.hbrBackground == cls.hbrBackground,
 154             "hbrBackground did not match\n");
 155         ok(wc.hCursor== cls.hCursor,
 156             "hCursor did not match\n");
 157         ok(wc.hInstance== cls.hInstance,
 158             "hInstance did not match\n");
 159     }
 160     else
 161         ok(FALSE,"GetClassInfo (hinstance) failed!\n");
 162
 163     /* check GetClassInfo with zero hInstance */
 164     if(global)
 165     {
 166         if((test_atom = GetClassInfoW(0, str, &wc)))
 167         {
 168             ok(test_atom == classatom,
 169                 "class atom did not match %x != %x\n", test_atom, classatom);
 170             ok(wc.cbClsExtra == cls.cbClsExtra,
 171                 "cbClsExtra did not match %x!=%x\n",wc.cbClsExtra,cls.cbClsExtra);
 172             ok(wc.cbWndExtra == cls.cbWndExtra,
 173                 "cbWndExtra did not match %x!=%x\n",wc.cbWndExtra,cls.cbWndExtra);
 174             ok(wc.hbrBackground == cls.hbrBackground,
 175                 "hbrBackground did not match %p!=%p\n",wc.hbrBackground,cls.hbrBackground);
 176             ok(wc.hCursor== cls.hCursor,
 177                 "hCursor did not match %p!=%p\n",wc.hCursor,cls.hCursor);
 178             ok(!wc.hInstance,
 179                 "hInstance not zero for global class %p\n",wc.hInstance);
 180         }
 181         else
 182             ok(FALSE,"GetClassInfo (0) failed for global class!\n");
 183     }
 184     else
 185     {
 186         ok(!GetClassInfoW(0, str, &wc),
 187             "GetClassInfo (0) succeeded for local class!\n");
 188     }
 189
 190     ok(!UnregisterClassW(className, hInstance),
 191         "Unregister class succeeded with window existing\n");
 192
 193     ok(DestroyWindow(hTestWnd),
 194         "DestroyWindow() failed!\n");
 195
 196     ok(UnregisterClassW(className, hInstance),
 197         "UnregisterClass() failed\n");
 198
 199     return;
 200 }
 201
 202 static void check_style( const char *name, int must_exist, UINT style, UINT ignore )
 203 {
 204     WNDCLASS wc;
 205
 206     if (GetClassInfo( 0, name, &wc ))
 207     {
 208         ok( !(~wc.style & style & ~ignore), "System class %s is missing bits %x (%08x/%08x)\n",
 209             name, ~wc.style & style, wc.style, style );
 210         ok( !(wc.style & ~style), "System class %s has extra bits %x (%08x/%08x)\n",
 211             name, wc.style & ~style, wc.style, style );
 212     }
 213     else
 214         ok( !must_exist, "System class %s does not exist\n", name );
 215 }
 216
 217 /* test styles of system classes */
 218 static void test_styles(void)
 219 {
 220     /* check style bits */
 221     check_style( "Button",     1, CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, 0 );
 222     check_style( "ComboBox",   1, CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, 0 );
 223     check_style( "Edit",       1, CS_PARENTDC | CS_DBLCLKS, 0 );
 224     check_style( "ListBox",    1, CS_PARENTDC | CS_DBLCLKS, CS_PARENTDC /*FIXME*/ );
 225     check_style( "MDIClient",  1, 0, 0 );
 226     check_style( "ScrollBar",  1, CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, 0 );
 227     check_style( "Static",     1, CS_PARENTDC | CS_DBLCLKS, 0 );
 228     check_style( "ComboLBox",  1, CS_SAVEBITS | CS_DBLCLKS, 0 );
 229     check_style( "DDEMLEvent", 0, 0, 0 );
 230     check_style( "Message",    0, 0, 0 );
 231     check_style( "#32768",     1, CS_DROPSHADOW | CS_SAVEBITS | CS_DBLCLKS, CS_DROPSHADOW );  /* menu */
 232     check_style( "#32769",     1, CS_DBLCLKS, 0 );  /* desktop */
 233     check_style( "#32770",     1, CS_SAVEBITS | CS_DBLCLKS, 0 );  /* dialog */
 234     todo_wine { check_style( "#32771",     1, CS_SAVEBITS | CS_HREDRAW | CS_VREDRAW, 0 ); } /* task switch */
 235     check_style( "#32772",     1, 0, 0 );  /* icon title */
 236 }
 237
 238 static void check_class_(int line, HINSTANCE inst, const char *name, const char *menu_name)
 239 {
 240     WNDCLASS wc;
 241     UINT atom = GetClassInfo(inst,name,&wc);
 242     ok_(__FILE__,line)( atom, "Class %s %p not found\n", name, inst );
 243     if (atom)
 244     {
 245         if (wc.lpszMenuName && menu_name)
 246             ok_(__FILE__,line)( !strcmp( menu_name, wc.lpszMenuName ),
 247                                 "Wrong name %s/%s for class %s %p\n",
 248                                 wc.lpszMenuName, menu_name, name, inst );
 249         else
 250             ok_(__FILE__,line)( !menu_name == !wc.lpszMenuName, "Wrong name %p/%p for class %s %p\n",
 251                                 wc.lpszMenuName, menu_name, name, inst );
 252     }
 253 }
 254 #define check_class(inst,name,menu) check_class_(__LINE__,inst,name,menu)
 255
 256 static void check_instance_( int line, const char *name, HINSTANCE inst,
 257                              HINSTANCE info_inst, HINSTANCE gcl_inst )
 258 {
 259     WNDCLASSA wc;
 260     HWND hwnd;
 261
 262     ok_(__FILE__,line)( GetClassInfo( inst, name, &wc ), "Couldn't find class %s inst %p\n", name, inst );
 263     ok_(__FILE__,line)( wc.hInstance == info_inst, "Wrong info instance %p/%p for class %s\n",
 264                         wc.hInstance, info_inst, name );
 265     hwnd = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, inst, 0 );
 266     ok_(__FILE__,line)( hwnd != NULL, "Couldn't create window for class %s inst %p\n", name, inst );
 267     ok_(__FILE__,line)( (HINSTANCE)GetClassLongPtrA( hwnd, GCLP_HMODULE ) == gcl_inst,
 268                         "Wrong GCL instance %p/%p for class %s\n",
 269         (HINSTANCE)GetClassLongPtrA( hwnd, GCLP_HMODULE ), gcl_inst, name );
 270     ok_(__FILE__,line)( (HINSTANCE)GetWindowLongPtrA( hwnd, GWLP_HINSTANCE ) == inst,
 271                         "Wrong GWL instance %p/%p for window %s\n",
 272         (HINSTANCE)GetWindowLongPtrA( hwnd, GWLP_HINSTANCE ), inst, name );
 273     ok_(__FILE__,line)(!UnregisterClassA(name, inst),
 274                        "UnregisterClassA should fail while exists a class window\n");
 275     ok_(__FILE__,line)(GetLastError() == ERROR_CLASS_HAS_WINDOWS,
 276                        "GetLastError() should be set to ERROR_CLASS_HAS_WINDOWS not %d\n", GetLastError());
 277     DestroyWindow(hwnd);
 278 }
 279 #define check_instance(name,inst,info_inst,gcl_inst) check_instance_(__LINE__,name,inst,info_inst,gcl_inst)
 280
 281 struct class_info
 282 {
 283     const char *name;
 284     HINSTANCE inst, info_inst, gcl_inst;
 285 };
 286
 287 static DWORD WINAPI thread_proc(void *param)
 288 {
 289     struct class_info *class_info = param;
 290
 291     check_instance(class_info->name, class_info->inst, class_info->info_inst, class_info->gcl_inst);
 292
 293     return 0;
 294 }
 295
 296 static void check_thread_instance( const char *name, HINSTANCE inst, HINSTANCE info_inst, HINSTANCE gcl_inst )
 297 {
 298     HANDLE hThread;
 299     DWORD tid;
 300     struct class_info class_info;
 301
 302     class_info.name = name;
 303     class_info.inst = inst;
 304     class_info.info_inst = info_inst;
 305     class_info.gcl_inst = gcl_inst;
 306
 307     hThread = CreateThread(NULL, 0, thread_proc, &class_info, 0, &tid);
 308     ok(hThread != NULL, "CreateThread failed, error %d\n", GetLastError());
 309     ok(WaitForSingleObject(hThread, INFINITE) == WAIT_OBJECT_0, "WaitForSingleObject failed\n");
 310     CloseHandle(hThread);
 311 }
 312
 313 /* test various instance parameters */
 314 static void test_instances(void)
 315 {
 316     WNDCLASSA cls, wc;
 317     WNDCLASSEXA wcexA;
 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     HINSTANCE zero_instance = 0;
 324     DWORD r;
 325     char buffer[0x10];
 326
 327     memset( &cls, 0, sizeof(cls) );
 328     cls.style         = CS_HREDRAW | CS_VREDRAW;
 329     cls.lpfnWndProc   = ClassTest_WndProc;
 330     cls.cbClsExtra    = 0;
 331     cls.cbWndExtra    = 0;
 332     cls.lpszClassName = name;
 333
 334     cls.lpszMenuName  = "main_module";
 335     cls.hInstance = main_module;
 336
 337     ok( RegisterClassA( &cls ), "Failed to register local class for main module\n" );
 338     check_class( main_module, name, "main_module" );
 339     check_instance( name, main_module, main_module, main_module );
 340     check_thread_instance( name, main_module, main_module, main_module );
 341
 342     cls.lpszMenuName  = "kernel32";
 343     cls.hInstance = kernel32;
 344     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 345     check_class( kernel32, name, "kernel32" );
 346     check_class( main_module, name, "main_module" );
 347     check_instance( name, kernel32, kernel32, kernel32 );
 348     check_thread_instance( name, kernel32, kernel32, kernel32 );
 349     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 350
 351     ZeroMemory(&wcexA, sizeof(wcexA));
 352     wcexA.lpfnWndProc = DefWindowProcA;
 353     wcexA.lpszClassName = "__classex_test__";
 354     SetLastError(0xdeadbeef);
 355     wcexA.cbSize = sizeof(wcexA) - 1;
 356     ok( ((RegisterClassExA( &wcexA ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 357           "Succeeded with invalid number of cbSize bytes\n");
 358     SetLastError(0xdeadbeef);
 359     wcexA.cbSize = sizeof(wcexA) + 1;
 360     ok( ((RegisterClassExA( &wcexA ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 361           "Succeeded with invalid number of cbSize bytes\n");
 362     SetLastError(0xdeadbeef);
 363     wcexA.cbSize = sizeof(wcexA);
 364     ok( RegisterClassExA( &wcexA ), "Failed with valid number of cbSize bytes\n");
 365     wcexA.cbSize = 0xdeadbeef;
 366     ok( GetClassInfoEx(main_module, wcexA.lpszClassName, &wcexA), "GetClassInfoEx failed\n");
 367     ok( wcexA.cbSize == 0xdeadbeef, "GetClassInfoEx returned wrong cbSize value %d\n", wcexA.cbSize);
 368     UnregisterClassA(wcexA.lpszClassName, main_module);
 369
 370     /* Bug 2631 - Supplying an invalid number of bytes fails */
 371     cls.cbClsExtra    = 0;
 372     cls.cbWndExtra    = -1;
 373     SetLastError(0xdeadbeef);
 374     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 375           "Failed with invalid number of WndExtra bytes\n");
 376
 377     cls.cbClsExtra    = -1;
 378     cls.cbWndExtra    = 0;
 379     SetLastError(0xdeadbeef);
 380     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 381           "Failed with invalid number of ClsExtra bytes\n");
 382
 383     cls.cbClsExtra    = -1;
 384     cls.cbWndExtra    = -1;
 385     SetLastError(0xdeadbeef);
 386     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 387           "Failed with invalid number of ClsExtra and cbWndExtra bytes\n");
 388
 389     cls.cbClsExtra    = 0;
 390     cls.cbWndExtra    = 0;
 391     SetLastError(0xdeadbeef);
 392
 393     /* setting global flag doesn't change status of class */
 394     hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 395     ok( hwnd != 0, "CreateWindow failed error %u\n", GetLastError());
 396     SetClassLongA( hwnd, GCL_STYLE, CS_GLOBALCLASS );
 397     cls.lpszMenuName  = "kernel32";
 398     cls.hInstance = kernel32;
 399     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 400     check_class( kernel32, name, "kernel32" );
 401     check_class( main_module, name, "main_module" );
 402     check_instance( name, kernel32, kernel32, kernel32 );
 403     check_instance( name, main_module, main_module, main_module );
 404     check_thread_instance( name, kernel32, kernel32, kernel32 );
 405     check_thread_instance( name, main_module, main_module, main_module );
 406     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 407
 408     /* changing the instance doesn't make it global */
 409     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0 );
 410     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 411     check_class( kernel32, name, "kernel32" );
 412     check_instance( name, kernel32, kernel32, kernel32 );
 413     check_thread_instance( name, kernel32, kernel32, kernel32 );
 414     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 415     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 416
 417     /* GetClassInfo with instance 0 finds user32 instance */
 418     SetClassLongPtrA( hwnd, GCLP_HMODULE, (LONG_PTR)user32 );
 419     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 420     if (!GetClassInfo( 0, name, &wc )) zero_instance = user32; /* instance 0 not supported on wow64 */
 421     else
 422     {
 423         check_instance( name, 0, 0, kernel32 );
 424         check_thread_instance( name, 0, 0, kernel32 );
 425     }
 426     check_class( kernel32, name, "kernel32" );
 427     check_class( user32, name, "main_module" );
 428     check_class( zero_instance, name, "main_module" );
 429     check_instance( name, kernel32, kernel32, kernel32 );
 430     check_instance( name, user32, zero_instance, user32 );
 431     check_thread_instance( name, kernel32, kernel32, kernel32 );
 432     check_thread_instance( name, user32, zero_instance, user32 );
 433     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 434
 435     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0x12345678 );
 436     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 437     check_class( kernel32, name, "kernel32" );
 438     check_class( (HINSTANCE)0x12345678, name, "main_module" );
 439     check_instance( name, kernel32, kernel32, kernel32 );
 440     check_instance( name, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678 );
 441     check_thread_instance( name, kernel32, kernel32, kernel32 );
 442     check_thread_instance( name, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678 );
 443     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 444
 445     /* creating a window with instance 0 uses the first class found */
 446     cls.hInstance = (HINSTANCE)0xdeadbeef;
 447     cls.lpszMenuName = "deadbeef";
 448     cls.style = 3;
 449     ok( RegisterClassA( &cls ), "Failed to register local class for deadbeef\n" );
 450     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 451     ok( GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == 0xdeadbeef,
 452         "Didn't get deadbeef class for null instance\n" );
 453     DestroyWindow( hwnd2 );
 454     ok( UnregisterClassA( name, (HINSTANCE)0xdeadbeef ), "Unregister failed for deadbeef\n" );
 455
 456     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 457     ok( (HINSTANCE)GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == kernel32,
 458         "Didn't get kernel32 class for null instance\n" );
 459     DestroyWindow( hwnd2 );
 460
 461     r = GetClassName( hwnd, buffer, 4 );
 462     ok( r == 3, "expected 3, got %d\n", r );
 463     ok( !strcmp( buffer, "__t"), "name wrong: %s\n", buffer );
 464
 465     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 466
 467     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 468     ok( GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == 0x12345678,
 469         "Didn't get 12345678 class for null instance\n" );
 470     DestroyWindow( hwnd2 );
 471
 472     SetClassLongPtrA( hwnd, GCLP_HMODULE, (LONG_PTR)main_module );
 473     DestroyWindow( hwnd );
 474
 475     /* null handle means the same thing as main module */
 476     cls.lpszMenuName  = "null";
 477     cls.hInstance = 0;
 478     ok( !RegisterClassA( &cls ), "Succeeded registering local class for null instance\n" );
 479     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 480     ok( UnregisterClassA( name, main_module ), "Unregister failed for main module\n" );
 481
 482     ok( RegisterClassA( &cls ), "Failed to register local class for null instance\n" );
 483     /* must be found with main module handle */
 484     check_class( main_module, name, "null" );
 485     check_instance( name, main_module, main_module, main_module );
 486     check_thread_instance( name, main_module, main_module, main_module );
 487     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 488     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 489     ok( UnregisterClassA( name, 0 ), "Unregister failed for null instance\n" );
 490
 491     /* registering for user32 always fails */
 492     cls.lpszMenuName = "user32";
 493     cls.hInstance = user32;
 494     ok( !RegisterClassA( &cls ), "Succeeded registering local class for user32\n" );
 495     ok( GetLastError() == ERROR_INVALID_PARAMETER, "Wrong error code %d\n", GetLastError() );
 496     cls.style |= CS_GLOBALCLASS;
 497     ok( !RegisterClassA( &cls ), "Succeeded registering global class for user32\n" );
 498     ok( GetLastError() == ERROR_INVALID_PARAMETER, "Wrong error code %d\n", GetLastError() );
 499
 500     /* unregister is OK though */
 501     cls.hInstance = main_module;
 502     ok( RegisterClassA( &cls ), "Failed to register global class for main module\n" );
 503     ok( UnregisterClassA( name, user32 ), "Unregister failed for user32\n" );
 504
 505     /* instance doesn't matter for global class */
 506     cls.style |= CS_GLOBALCLASS;
 507     cls.lpszMenuName  = "main_module";
 508     cls.hInstance = main_module;
 509     ok( RegisterClassA( &cls ), "Failed to register global class for main module\n" );
 510     cls.lpszMenuName  = "kernel32";
 511     cls.hInstance = kernel32;
 512     ok( !RegisterClassA( &cls ), "Succeeded registering local class for kernel32\n" );
 513     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 514     /* even if global flag is cleared */
 515     hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 516     SetClassLongA( hwnd, GCL_STYLE, 0 );
 517     ok( !RegisterClassA( &cls ), "Succeeded registering local class for kernel32\n" );
 518     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 519
 520     check_class( main_module, name, "main_module" );
 521     check_class( kernel32, name, "main_module" );
 522     check_class( 0, name, "main_module" );
 523     check_class( (HINSTANCE)0x12345678, name, "main_module" );
 524     check_instance( name, main_module, main_module, main_module );
 525     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, main_module );
 526     check_thread_instance( name, main_module, main_module, main_module );
 527     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, main_module );
 528
 529     /* changing the instance for global class doesn't make much difference */
 530     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0xdeadbeef );
 531     check_instance( name, main_module, main_module, (HINSTANCE)0xdeadbeef );
 532     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef );
 533     check_thread_instance( name, main_module, main_module, (HINSTANCE)0xdeadbeef );
 534     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef );
 535
 536     DestroyWindow( hwnd );
 537     ok( UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister failed for main module global\n" );
 538     ok( !UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister succeeded the second time\n" );
 539     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 540
 541     cls.hInstance = (HINSTANCE)0x12345678;
 542     ok( RegisterClassA( &cls ), "Failed to register global class for dummy instance\n" );
 543     check_instance( name, main_module, main_module, (HINSTANCE)0x12345678 );
 544     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0x12345678 );
 545     check_thread_instance( name, main_module, main_module, (HINSTANCE)0x12345678 );
 546     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0x12345678 );
 547     ok( UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister failed for main module global\n" );
 548
 549     /* check system classes */
 550
 551     /* we cannot register a global class with the name of a system class */
 552     cls.style |= CS_GLOBALCLASS;
 553     cls.lpszMenuName  = "button_main_module";
 554     cls.lpszClassName = "BUTTON";
 555     cls.hInstance = main_module;
 556     ok( !RegisterClassA( &cls ), "Succeeded registering global button class for main module\n" );
 557     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 558     cls.hInstance = kernel32;
 559     ok( !RegisterClassA( &cls ), "Succeeded registering global button class for kernel32\n" );
 560     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 561
 562     /* local class is OK however */
 563     cls.style &= ~CS_GLOBALCLASS;
 564     cls.lpszMenuName  = "button_main_module";
 565     cls.hInstance = main_module;
 566     ok( RegisterClassA( &cls ), "Failed to register local button class for main module\n" );
 567     check_class( main_module, "BUTTON", "button_main_module" );
 568     cls.lpszMenuName  = "button_kernel32";
 569     cls.hInstance = kernel32;
 570     ok( RegisterClassA( &cls ), "Failed to register local button class for kernel32\n" );
 571     check_class( kernel32, "BUTTON", "button_kernel32" );
 572     check_class( main_module, "BUTTON", "button_main_module" );
 573     ok( UnregisterClassA( "BUTTON", kernel32 ), "Unregister failed for kernel32 button\n" );
 574     ok( UnregisterClassA( "BUTTON", main_module ), "Unregister failed for main module button\n" );
 575     /* GetClassInfo sets instance to passed value for global classes */
 576     check_instance( "BUTTON", 0, 0, user32 );
 577     check_instance( "BUTTON", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 578     check_instance( "BUTTON", user32, zero_instance, user32 );
 579     check_thread_instance( "BUTTON", 0, 0, user32 );
 580     check_thread_instance( "BUTTON", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 581     check_thread_instance( "BUTTON", user32, zero_instance, user32 );
 582
 583     /* we can unregister system classes */
 584     ok( GetClassInfo( 0, "BUTTON", &wc ), "Button class not found with null instance\n" );
 585     ok( GetClassInfo( kernel32, "BUTTON", &wc ), "Button class not found with kernel32\n" );
 586     ok( UnregisterClass( "BUTTON", (HINSTANCE)0x12345678 ), "Failed to unregister button\n" );
 587     ok( !UnregisterClass( "BUTTON", (HINSTANCE)0x87654321 ), "Unregistered button a second time\n" );
 588     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 589     ok( !GetClassInfo( 0, "BUTTON", &wc ), "Button still exists\n" );
 590     /* last error not set reliably */
 591
 592     /* we can change the instance of a system class */
 593     check_instance( "EDIT", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 594     check_thread_instance( "EDIT", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 595     hwnd = CreateWindowExA( 0, "EDIT", "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 596     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0xdeadbeef );
 597     check_instance( "EDIT", (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0xdeadbeef );
 598     check_thread_instance( "EDIT", (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0xdeadbeef );
 599     DestroyWindow(hwnd);
 600 }
 601
 602 static void test_builtinproc(void)
 603 {
 604     /* Edit behaves differently */
 605     static const CHAR NORMAL_CLASSES[][10] = {
 606         "Button",
 607         "Static",
 608         "ComboBox",
 609         "ComboLBox",
 610         "ListBox",
 611         "ScrollBar",
 612         "#32770",  /* dialog */
 613     };
 614     static const int NUM_NORMAL_CLASSES = (sizeof(NORMAL_CLASSES)/sizeof(NORMAL_CLASSES[0]));
 615     static const char classA[] = "deftest";
 616     static const WCHAR classW[] = {'d','e','f','t','e','s','t',0};
 617     WCHAR unistring[] = {0x142, 0x40e, 0x3b4, 0};  /* a string that would be destroyed by a W->A->W conversion */
 618     WNDPROC pDefWindowProcA, pDefWindowProcW;
 619     WNDPROC pNtdllDefWindowProcA, pNtdllDefWindowProcW;
 620     WNDPROC oldproc;
 621     WNDCLASSEXA cls;  /* the memory layout of WNDCLASSEXA and WNDCLASSEXW is the same */
 622     WCHAR buf[128];
 623     ATOM atom;
 624     HWND hwnd;
 625     int i;
 626
 627     pDefWindowProcA = (void *)GetProcAddress(GetModuleHandle("user32.dll"), "DefWindowProcA");
 628     pDefWindowProcW = (void *)GetProcAddress(GetModuleHandle("user32.dll"), "DefWindowProcW");
 629     pNtdllDefWindowProcA = (void *)GetProcAddress(GetModuleHandle("ntdll.dll"), "NtdllDefWindowProc_A");
 630     pNtdllDefWindowProcW = (void *)GetProcAddress(GetModuleHandle("ntdll.dll"), "NtdllDefWindowProc_W");
 631
 632     /* On Vista+, the user32.dll export DefWindowProcA/W is forwarded to  */
 633     /* ntdll.NtdllDefWindowProc_A/W. However, the wndproc returned by     */
 634     /* GetClassLong/GetWindowLong points to an unexported user32 function */
 635     if (pDefWindowProcA == pNtdllDefWindowProcA &&
 636         pDefWindowProcW == pNtdllDefWindowProcW)
 637         skip("user32.DefWindowProcX forwarded to ntdll.NtdllDefWindowProc_X\n");
 638     else
 639     {
 640         for (i = 0; i < 4; i++)
 641         {
 642             ZeroMemory(&cls, sizeof(cls));
 643             cls.cbSize = sizeof(cls);
 644             cls.hInstance = GetModuleHandle(NULL);
 645             cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 646             if (i & 1)
 647                 cls.lpfnWndProc = pDefWindowProcA;
 648             else
 649                 cls.lpfnWndProc = pDefWindowProcW;
 650
 651             if (i & 2)
 652             {
 653                 cls.lpszClassName = classA;
 654                 atom = RegisterClassExA(&cls);
 655             }
 656             else
 657             {
 658                 cls.lpszClassName = (LPCSTR)classW;
 659                 atom = RegisterClassExW((WNDCLASSEXW *)&cls);
 660             }
 661             ok(atom != 0, "Couldn't register class, i=%d, %d\n", i, GetLastError());
 662
 663             hwnd = CreateWindowA(classA, NULL, 0, 0, 0, 100, 100, NULL, NULL, GetModuleHandle(NULL), NULL);
 664             ok(hwnd != NULL, "Couldn't create window i=%d\n", i);
 665
 666             ok(GetWindowLongPtrA(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA, "Wrong ANSI wndproc: %p vs %p\n",
 667                 (void *)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), pDefWindowProcA);
 668             ok(GetClassLongPtrA(hwnd, GCLP_WNDPROC) == (ULONG_PTR)pDefWindowProcA, "Wrong ANSI wndproc: %p vs %p\n",
 669                 (void *)GetClassLongPtrA(hwnd, GCLP_WNDPROC), pDefWindowProcA);
 670
 671             ok(GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcW, "Wrong Unicode wndproc: %p vs %p\n",
 672                 (void *)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), pDefWindowProcW);
 673             ok(GetClassLongPtrW(hwnd, GCLP_WNDPROC) == (ULONG_PTR)pDefWindowProcW, "Wrong Unicode wndproc: %p vs %p\n",
 674                 (void *)GetClassLongPtrW(hwnd, GCLP_WNDPROC), pDefWindowProcW);
 675
 676             DestroyWindow(hwnd);
 677             UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 678         }
 679     }
 680
 681     /* built-in winproc - window A/W type automatically detected */
 682     ZeroMemory(&cls, sizeof(cls));
 683     cls.cbSize = sizeof(cls);
 684     cls.hInstance = GetModuleHandle(NULL);
 685     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 686     cls.lpszClassName = classA;
 687     cls.lpfnWndProc = pDefWindowProcW;
 688     atom = RegisterClassExA(&cls);
 689
 690     hwnd = CreateWindowExW(0, classW, NULL, WS_OVERLAPPEDWINDOW,
 691         CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
 692     ok(IsWindowUnicode(hwnd), "Windows should be Unicode\n");
 693     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)pDefWindowProcA);
 694     ok(IsWindowUnicode(hwnd), "Windows should have remained Unicode\n");
 695     if (GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA)
 696     {
 697         /* DefWindowProc isn't magic on wow64 */
 698         ok(IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Ansi winproc is not a handle\n");
 699     }
 700     else
 701     {
 702         ok(GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcW, "Invalid Unicode winproc\n");
 703         ok(GetWindowLongPtrA(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA, "Invalid Ansi winproc\n");
 704     }
 705     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 706     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have switched window to ANSI\n");
 707
 708     DestroyWindow(hwnd);
 709     UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 710
 711     /* custom winproc - the same function can be used as both A and W*/
 712     ZeroMemory(&cls, sizeof(cls));
 713     cls.cbSize = sizeof(cls);
 714     cls.hInstance = GetModuleHandle(NULL);
 715     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 716     cls.lpszClassName = classA;
 717     cls.lpfnWndProc = ClassTest_WndProc2;
 718     atom = RegisterClassExA(&cls);
 719
 720     hwnd = CreateWindowExW(0, classW, NULL, WS_OVERLAPPEDWINDOW,
 721         CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
 722     ok(IsWindowUnicode(hwnd) == FALSE, "Window should be ANSI\n");
 723     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 724     ok(IsWindowUnicode(hwnd), "SetWindowLongPtrW should have changed window to Unicode\n");
 725     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 726     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have changed window to ANSI\n");
 727
 728     DestroyWindow(hwnd);
 729     UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 730
 731     /* For most of the builtin controls both GetWindowLongPtrA and W returns a pointer that is executed directly
 732      * by CallWindowProcA/W */
 733     for (i = 0; i < NUM_NORMAL_CLASSES; i++)
 734     {
 735         WNDPROC procA, procW;
 736         hwnd = CreateWindowExA(0, NORMAL_CLASSES[i], classA, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 680, 260,
 737             NULL, NULL, NULL, 0);
 738         ok(hwnd != NULL, "Couldn't create window of class %s\n", NORMAL_CLASSES[i]);
 739         SetWindowText(hwnd, classA);  /* ComboBox needs this */
 740         procA = (WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC);
 741         procW = (WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC);
 742         ok(!IS_WNDPROC_HANDLE(procA), "procA should not be a handle for %s (%p)\n", NORMAL_CLASSES[i], procA);
 743         ok(!IS_WNDPROC_HANDLE(procW), "procW should not be a handle for %s (%p)\n", NORMAL_CLASSES[i], procW);
 744         CallWindowProcA(procA, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 745         ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT A/A invalid return for class %s\n", NORMAL_CLASSES[i]);
 746         CallWindowProcA(procW, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 747         ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT A/W invalid return for class %s\n", NORMAL_CLASSES[i]);
 748         CallWindowProcW(procA, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 749         ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT W/A invalid return for class %s\n", NORMAL_CLASSES[i]);
 750         CallWindowProcW(procW, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 751         ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT W/W invalid return for class %s\n", NORMAL_CLASSES[i]);
 752
 753         oldproc = (WNDPROC)SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 754         ok(IS_WNDPROC_HANDLE(oldproc) == FALSE, "Class %s shouldn't return a handle\n", NORMAL_CLASSES[i]);
 755         SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 756         DestroyWindow(hwnd);
 757     }
 758
 759     /* Edit controls are special - they return a wndproc handle when GetWindowLongPtr is called with a different A/W.
 760      * On the other hand there is no W->A->W conversion so this control is treated specially. */
 761     hwnd = CreateWindowW(WC_EDITW, unistring, WS_OVERLAPPEDWINDOW,
 762       CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, NULL, 0);
 763     /* GetClassLongPtr returns that both the Unicode and ANSI wndproc */
 764     ok(IS_WNDPROC_HANDLE(GetClassLongPtrA(hwnd, GCLP_WNDPROC)) == FALSE, "Edit control class should have a Unicode wndproc\n");
 765     ok(IS_WNDPROC_HANDLE(GetClassLongPtrW(hwnd, GCLP_WNDPROC)) == FALSE, "Edit control class should have a ANSI wndproc\n");
 766     /* But GetWindowLongPtr returns only a handle for the ANSI one */
 767     ok(IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Edit control should return a wndproc handle\n");
 768     ok(!IS_WNDPROC_HANDLE(GetWindowLongPtrW(hwnd, GWLP_WNDPROC)), "Edit control shouldn't return a W wndproc handle\n");
 769     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 770     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 771     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 772     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 773     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 774     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 775
 776     SetWindowTextW(hwnd, classW);
 777     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 778     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 779
 780     oldproc = (WNDPROC)SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc2);
 781     /* SetWindowLongPtr returns a wndproc handle - like GetWindowLongPtr */
 782     ok(IS_WNDPROC_HANDLE(oldproc), "Edit control should return a wndproc handle\n");
 783     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have changed window to ANSI\n");
 784     SetWindowTextA(hwnd, classA);  /* Windows resets the title to WideStringToMultiByte(unistring) */
 785     memset(buf, 0, sizeof(buf));
 786     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 787     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 788     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 789     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 790     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 791     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 792
 793     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 794     ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT invalid return\n");
 795
 796     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 797
 798     DestroyWindow(hwnd);
 799
 800     hwnd = CreateWindowA(WC_EDITA, classA, WS_OVERLAPPEDWINDOW,
 801       CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, NULL, 0);
 802
 803     /* GetClassLongPtr returns that both the Unicode and ANSI wndproc */
 804     ok(!IS_WNDPROC_HANDLE(GetClassLongPtrA(hwnd, GCLP_WNDPROC)), "Edit control class should have a Unicode wndproc\n");
 805     ok(!IS_WNDPROC_HANDLE(GetClassLongPtrW(hwnd, GCLP_WNDPROC)), "Edit control class should have a ANSI wndproc\n");
 806     /* But GetWindowLongPtr returns only a handle for the Unicode one */
 807     ok(!IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Edit control shouldn't return an A wndproc handle\n");
 808     ok(IS_WNDPROC_HANDLE(GetWindowLongPtrW(hwnd, GWLP_WNDPROC)), "Edit control should return a wndproc handle\n");
 809     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 810     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 811     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 812     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 813     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 814     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 815
 816     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 817     ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT invalid return\n");
 818
 819     oldproc = (WNDPROC)SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 820     SetWindowTextW(hwnd, unistring);
 821     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 822     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 823     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 824     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 825     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 826     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 827
 828     SetWindowTextW(hwnd, classW);
 829     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 830     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 831
 832     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 833
 834     DestroyWindow(hwnd);
 835 }
 836
 837
 838 static LRESULT WINAPI TestDlgProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 839 {
 840     return DefWindowProc(hWnd, uMsg, wParam, lParam);
 841 }
 842
 843 static BOOL RegisterTestDialog(HINSTANCE hInstance)
 844 {
 845     WNDCLASSEX wcx;
 846     ATOM atom = 0;
 847
 848     ZeroMemory(&wcx, sizeof(WNDCLASSEX));
 849     wcx.cbSize = sizeof(wcx);
 850     wcx.lpfnWndProc = TestDlgProc;
 851     wcx.cbClsExtra = 0;
 852     wcx.cbWndExtra = DLGWINDOWEXTRA;
 853     wcx.hInstance = hInstance;
 854     wcx.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 855     wcx.hCursor = LoadCursor(NULL, IDC_ARROW);
 856     wcx.hbrBackground = GetStockObject(WHITE_BRUSH);
 857     wcx.lpszClassName = "TestDialog";
 858     wcx.lpszMenuName =  "TestDialog";
 859     wcx.hIconSm = LoadImage(hInstance, MAKEINTRESOURCE(5), IMAGE_ICON,
 860         GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
 861         LR_DEFAULTCOLOR);
 862
 863     atom = RegisterClassEx(&wcx);
 864     ok(atom != 0, "RegisterClassEx returned 0\n");
 865
 866     return atom;
 867 }
 868
 869 /* test registering a dialog box created by using the CLASS directive in a
 870    resource file, then test creating the dialog using CreateDialogParam. */
 871 static void CreateDialogParamTest(HINSTANCE hInstance)
 872 {
 873     HWND hWndMain;
 874
 875     if (RegisterTestDialog(hInstance))
 876     {
 877         hWndMain = CreateDialogParam(hInstance, "CLASS_TEST_DIALOG", NULL, 0, 0);
 878         ok(hWndMain != NULL, "CreateDialogParam returned NULL\n");
 879         ShowWindow(hWndMain, SW_SHOW);
 880         DestroyWindow(hWndMain);
 881     }
 882 }
 883
 884 static const struct
 885 {
 886     const char name[9];
 887     int value;
 888     int badvalue;
 889 } extra_values[] =
 890 {
 891     {"#32770",30,30}, /* Dialog */
 892 #ifdef _WIN64
 893     {"Edit",8,8},
 894 #else
 895     {"Edit",6,8},     /* Windows XP 64-bit returns 8 also to 32-bit applications */
 896 #endif
 897 };
 898
 899 static void test_extra_values(void)
 900 {
 901     int i;
 902     for(i=0; i< sizeof(extra_values)/sizeof(extra_values[0]); i++)
 903     {
 904         WNDCLASSEX wcx;
 905         BOOL ret = GetClassInfoEx(NULL,extra_values[i].name,&wcx);
 906
 907         ok( ret, "GetClassInfo (0) failed for global class %s\n", extra_values[i].name);
 908         if (!ret) continue;
 909         ok(extra_values[i].value == wcx.cbWndExtra || broken(extra_values[i].badvalue == wcx.cbWndExtra),
 910            "expected %d, got %d\n", extra_values[i].value, wcx.cbWndExtra);
 911     }
 912 }
 913
 914 static void test_GetClassInfo(void)
 915 {
 916     static const WCHAR staticW[] = {'s','t','a','t','i','c',0};
 917     WNDCLASSA wc;
 918     WNDCLASSEXA wcx;
 919     BOOL ret;
 920
 921     SetLastError(0xdeadbeef);
 922     ret = GetClassInfoA(0, "static", &wc);
 923     ok(ret, "GetClassInfoA() error %d\n", GetLastError());
 924
 925 if (0) { /* crashes under XP */
 926     SetLastError(0xdeadbeef);
 927     ret = GetClassInfoA(0, "static", NULL);
 928     ok(ret, "GetClassInfoA() error %d\n", GetLastError());
 929
 930     SetLastError(0xdeadbeef);
 931     ret = GetClassInfoW(0, staticW, NULL);
 932     ok(ret, "GetClassInfoW() error %d\n", GetLastError());
 933 }
 934
 935     wcx.cbSize = sizeof(wcx);
 936     SetLastError(0xdeadbeef);
 937     ret = GetClassInfoExA(0, "static", &wcx);
 938     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 939
 940     SetLastError(0xdeadbeef);
 941     ret = GetClassInfoExA(0, "static", NULL);
 942     ok(!ret, "GetClassInfoExA() should fail\n");
 943     ok(GetLastError() == ERROR_NOACCESS ||
 944        broken(GetLastError() == 0xdeadbeef), /* win9x */
 945        "expected ERROR_NOACCESS, got %d\n", GetLastError());
 946
 947     SetLastError(0xdeadbeef);
 948     ret = GetClassInfoExW(0, staticW, NULL);
 949     ok(!ret, "GetClassInfoExW() should fail\n");
 950     ok(GetLastError() == ERROR_NOACCESS ||
 951        broken(GetLastError() == 0xdeadbeef) /* NT4 */ ||
 952        broken(GetLastError() == ERROR_CALL_NOT_IMPLEMENTED), /* win9x */
 953        "expected ERROR_NOACCESS, got %d\n", GetLastError());
 954
 955     wcx.cbSize = 0;
 956     wcx.lpfnWndProc = NULL;
 957     SetLastError(0xdeadbeef);
 958     ret = GetClassInfoExA(0, "static", &wcx);
 959     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 960     ok(wcx.cbSize == 0, "expected 0, got %u\n", wcx.cbSize);
 961     ok(wcx.lpfnWndProc != NULL, "got null proc\n");
 962
 963     wcx.cbSize = sizeof(wcx) - 1;
 964     wcx.lpfnWndProc = NULL;
 965     SetLastError(0xdeadbeef);
 966     ret = GetClassInfoExA(0, "static", &wcx);
 967     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 968     ok(wcx.cbSize == sizeof(wcx) - 1, "expected sizeof(wcx)-1, got %u\n", wcx.cbSize);
 969     ok(wcx.lpfnWndProc != NULL, "got null proc\n");
 970
 971     wcx.cbSize = sizeof(wcx) + 1;
 972     wcx.lpfnWndProc = NULL;
 973     SetLastError(0xdeadbeef);
 974     ret = GetClassInfoExA(0, "static", &wcx);
 975     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 976     ok(wcx.cbSize == sizeof(wcx) + 1, "expected sizeof(wcx)+1, got %u\n", wcx.cbSize);
 977     ok(wcx.lpfnWndProc != NULL, "got null proc\n");
 978 }
 979
 980 static void test_icons(void)
 981 {
 982     WNDCLASSEXW wcex, ret_wcex;
 983     WCHAR cls_name[] = {'I','c','o','n','T','e','s','t','C','l','a','s','s',0};
 984     HWND hwnd;
 985     HINSTANCE hinst = GetModuleHandleW(0);
 986     HICON hsmicon, hsmallnew;
 987     ICONINFO icinf;
 988
 989     memset(&wcex, 0, sizeof wcex);
 990     wcex.cbSize        = sizeof wcex;
 991     wcex.lpfnWndProc   = ClassTest_WndProc;
 992     wcex.hIcon         = LoadIconW(0, (LPCWSTR)IDI_APPLICATION);
 993     wcex.hInstance     = hinst;
 994     wcex.lpszClassName = cls_name;
 995     ok(RegisterClassExW(&wcex), "RegisterClassExW returned 0\n");
 996     hwnd = CreateWindowExW(0, cls_name, NULL, WS_OVERLAPPEDWINDOW,
 997                         0, 0, 0, 0, NULL, NULL, hinst, 0);
 998     ok(hwnd != NULL, "Window was not created\n");
 999
1000     ok(GetClassInfoExW(hinst, cls_name, &ret_wcex), "Class info was not retrieved\n");
1001     ok(wcex.hIcon == ret_wcex.hIcon, "Icons don't match\n");
1002     ok(ret_wcex.hIconSm != NULL, "hIconSm should be non-zero handle\n");
1003
1004     hsmicon = (HICON)GetClassLongPtrW(hwnd, GCLP_HICONSM);
1005     ok(hsmicon != NULL, "GetClassLong should return non-zero handle\n");
1006
1007     hsmallnew = CopyImage(wcex.hIcon, IMAGE_ICON, GetSystemMetrics(SM_CXSMICON),
1008                                                 GetSystemMetrics(SM_CYSMICON), 0);
1009     ok(!SetClassLongPtrW(hwnd, GCLP_HICONSM, (LONG_PTR)hsmallnew),
1010                     "Previous hIconSm should be zero\n");
1011     ok(hsmallnew == (HICON)GetClassLongPtrW(hwnd, GCLP_HICONSM),
1012                     "Should return explicitly assigned small icon\n");
1013     ok(!GetIconInfo(hsmicon, &icinf), "Previous small icon should be destroyed\n");
1014
1015     SetClassLongPtrW(hwnd, GCLP_HICONSM, 0);
1016     hsmicon = (HICON)GetClassLongPtrW(hwnd, GCLP_HICONSM);
1017     ok( hsmicon != NULL, "GetClassLong should return non-zero handle\n");
1018
1019     SetClassLongPtrW(hwnd, GCLP_HICON, 0);
1020     ok(!GetClassLongPtrW(hwnd, GCLP_HICONSM), "GetClassLong should return zero handle\n");
1021
1022     SetClassLongPtrW(hwnd, GCLP_HICON, (LONG_PTR)LoadIconW(NULL, (LPCWSTR)IDI_QUESTION));
1023     hsmicon = (HICON)GetClassLongPtrW(hwnd, GCLP_HICONSM);
1024     ok(hsmicon != NULL, "GetClassLong should return non-zero handle\n");
1025     UnregisterClassW(cls_name, hinst);
1026     ok(GetIconInfo(hsmicon, &icinf), "Icon should NOT be destroyed\n");
1027
1028     DestroyIcon(hsmallnew);
1029     DestroyWindow(hwnd);
1030 }
1031
1032 START_TEST(class)
1033 {
1034     HANDLE hInstance = GetModuleHandleA( NULL );
1035
1036     test_GetClassInfo();
1037     test_extra_values();
1038
1039     if (!GetModuleHandleW(0))
1040     {
1041         trace("Class test is incompatible with Win9x implementation, skipping\n");
1042         return;
1043     }
1044
1045     ClassTest(hInstance,FALSE);
1046     ClassTest(hInstance,TRUE);
1047     CreateDialogParamTest(hInstance);
1048     test_styles();
1049     test_builtinproc();
1050     test_icons();
1051
1052     /* this test unregisters the Button class so it should be executed at the end */
1053     test_instances();
1054 }