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     WNDCLASSEXA wcexA;
 319     HWND hwnd, hwnd2;
 320     const char *name = "__test__";
 321     HINSTANCE kernel32 = GetModuleHandleA("kernel32");
 322     HINSTANCE user32 = GetModuleHandleA("user32");
 323     HINSTANCE main_module = GetModuleHandleA(NULL);
 324     HINSTANCE zero_instance = 0;
 325     DWORD r;
 326     char buffer[0x10];
 327
 328     memset( &cls, 0, sizeof(cls) );
 329     cls.style         = CS_HREDRAW | CS_VREDRAW;
 330     cls.lpfnWndProc   = ClassTest_WndProc;
 331     cls.cbClsExtra    = 0;
 332     cls.cbWndExtra    = 0;
 333     cls.lpszClassName = name;
 334
 335     cls.lpszMenuName  = "main_module";
 336     cls.hInstance = main_module;
 337
 338     ok( RegisterClassA( &cls ), "Failed to register local class for main module\n" );
 339     check_class( main_module, name, "main_module" );
 340     check_instance( name, main_module, main_module, main_module );
 341     check_thread_instance( name, main_module, main_module, main_module );
 342
 343     cls.lpszMenuName  = "kernel32";
 344     cls.hInstance = kernel32;
 345     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 346     check_class( kernel32, name, "kernel32" );
 347     check_class( main_module, name, "main_module" );
 348     check_instance( name, kernel32, kernel32, kernel32 );
 349     check_thread_instance( name, kernel32, kernel32, kernel32 );
 350     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 351
 352     ZeroMemory(&wcexA, sizeof(wcexA));
 353     wcexA.lpfnWndProc = DefWindowProcA;
 354     wcexA.lpszClassName = "__classex_test__";
 355     SetLastError(0xdeadbeef);
 356     wcexA.cbSize = sizeof(wcexA) - 1;
 357     ok( ((RegisterClassExA( &wcexA ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 358           "Succeeded with invalid number of cbSize bytes\n");
 359     SetLastError(0xdeadbeef);
 360     wcexA.cbSize = sizeof(wcexA) + 1;
 361     ok( ((RegisterClassExA( &wcexA ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 362           "Succeeded with invalid number of cbSize bytes\n");
 363     SetLastError(0xdeadbeef);
 364     wcexA.cbSize = sizeof(wcexA);
 365     ok( RegisterClassExA( &wcexA ), "Failed with valid number of cbSize bytes\n");
 366     wcexA.cbSize = 0xdeadbeef;
 367     ok( GetClassInfoEx(main_module, wcexA.lpszClassName, &wcexA), "GetClassInfoEx failed\n");
 368     ok( wcexA.cbSize == 0xdeadbeef, "GetClassInfoEx returned wrong cbSize value %d\n", wcexA.cbSize);
 369     UnregisterClassA(wcexA.lpszClassName, main_module);
 370
 371     /* Bug 2631 - Supplying an invalid number of bytes fails */
 372     cls.cbClsExtra    = 0;
 373     cls.cbWndExtra    = -1;
 374     SetLastError(0xdeadbeef);
 375     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 376           "Failed with invalid number of WndExtra bytes\n");
 377
 378     cls.cbClsExtra    = -1;
 379     cls.cbWndExtra    = 0;
 380     SetLastError(0xdeadbeef);
 381     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 382           "Failed with invalid number of ClsExtra bytes\n");
 383
 384     cls.cbClsExtra    = -1;
 385     cls.cbWndExtra    = -1;
 386     SetLastError(0xdeadbeef);
 387     ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
 388           "Failed with invalid number of ClsExtra and cbWndExtra bytes\n");
 389
 390     cls.cbClsExtra    = 0;
 391     cls.cbWndExtra    = 0;
 392     SetLastError(0xdeadbeef);
 393
 394     /* setting global flag doesn't change status of class */
 395     hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 396     ok( hwnd != 0, "CreateWindow failed error %u\n", GetLastError());
 397     SetClassLongA( hwnd, GCL_STYLE, CS_GLOBALCLASS );
 398     cls.lpszMenuName  = "kernel32";
 399     cls.hInstance = kernel32;
 400     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 401     check_class( kernel32, name, "kernel32" );
 402     check_class( main_module, name, "main_module" );
 403     check_instance( name, kernel32, kernel32, kernel32 );
 404     check_instance( name, main_module, main_module, main_module );
 405     check_thread_instance( name, kernel32, kernel32, kernel32 );
 406     check_thread_instance( name, main_module, main_module, main_module );
 407     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 408
 409     /* changing the instance doesn't make it global */
 410     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0 );
 411     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 412     check_class( kernel32, name, "kernel32" );
 413     check_instance( name, kernel32, kernel32, kernel32 );
 414     check_thread_instance( name, kernel32, kernel32, kernel32 );
 415     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 416     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 417
 418     /* GetClassInfo with instance 0 finds user32 instance */
 419     SetClassLongPtrA( hwnd, GCLP_HMODULE, (LONG_PTR)user32 );
 420     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 421     if (!GetClassInfo( 0, name, &wc )) zero_instance = user32; /* instance 0 not supported on wow64 */
 422     else
 423     {
 424         check_instance( name, 0, 0, kernel32 );
 425         check_thread_instance( name, 0, 0, kernel32 );
 426     }
 427     check_class( kernel32, name, "kernel32" );
 428     check_class( user32, name, "main_module" );
 429     check_class( zero_instance, name, "main_module" );
 430     check_instance( name, kernel32, kernel32, kernel32 );
 431     check_instance( name, user32, zero_instance, user32 );
 432     check_thread_instance( name, kernel32, kernel32, kernel32 );
 433     check_thread_instance( name, user32, zero_instance, user32 );
 434     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 435
 436     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0x12345678 );
 437     ok( RegisterClassA( &cls ), "Failed to register local class for kernel32\n" );
 438     check_class( kernel32, name, "kernel32" );
 439     check_class( (HINSTANCE)0x12345678, name, "main_module" );
 440     check_instance( name, kernel32, kernel32, kernel32 );
 441     check_instance( name, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678 );
 442     check_thread_instance( name, kernel32, kernel32, kernel32 );
 443     check_thread_instance( name, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0x12345678 );
 444     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 445
 446     /* creating a window with instance 0 uses the first class found */
 447     cls.hInstance = (HINSTANCE)0xdeadbeef;
 448     cls.lpszMenuName = "deadbeef";
 449     cls.style = 3;
 450     ok( RegisterClassA( &cls ), "Failed to register local class for deadbeef\n" );
 451     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 452     ok( GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == 0xdeadbeef,
 453         "Didn't get deadbeef class for null instance\n" );
 454     DestroyWindow( hwnd2 );
 455     ok( UnregisterClassA( name, (HINSTANCE)0xdeadbeef ), "Unregister failed for deadbeef\n" );
 456
 457     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 458     ok( (HINSTANCE)GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == kernel32,
 459         "Didn't get kernel32 class for null instance\n" );
 460     DestroyWindow( hwnd2 );
 461
 462     r = GetClassName( hwnd, buffer, 4 );
 463     ok( r == 3, "expected 3, got %d\n", r );
 464     ok( !strcmp( buffer, "__t"), "name wrong: %s\n", buffer );
 465
 466     ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
 467
 468     hwnd2 = CreateWindowExA( 0, name, "test_window", 0, 0, 0, 0, 0, 0, 0, NULL, 0 );
 469     ok( GetClassLongPtrA( hwnd2, GCLP_HMODULE ) == 0x12345678,
 470         "Didn't get 12345678 class for null instance\n" );
 471     DestroyWindow( hwnd2 );
 472
 473     SetClassLongPtrA( hwnd, GCLP_HMODULE, (LONG_PTR)main_module );
 474     DestroyWindow( hwnd );
 475
 476     /* null handle means the same thing as main module */
 477     cls.lpszMenuName  = "null";
 478     cls.hInstance = 0;
 479     ok( !RegisterClassA( &cls ), "Succeeded registering local class for null instance\n" );
 480     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 481     ok( UnregisterClassA( name, main_module ), "Unregister failed for main module\n" );
 482
 483     ok( RegisterClassA( &cls ), "Failed to register local class for null instance\n" );
 484     /* must be found with main module handle */
 485     check_class( main_module, name, "null" );
 486     check_instance( name, main_module, main_module, main_module );
 487     check_thread_instance( name, main_module, main_module, main_module );
 488     ok( !GetClassInfo( 0, name, &wc ), "Class found with null instance\n" );
 489     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 490     ok( UnregisterClassA( name, 0 ), "Unregister failed for null instance\n" );
 491
 492     /* registering for user32 always fails */
 493     cls.lpszMenuName = "user32";
 494     cls.hInstance = user32;
 495     ok( !RegisterClassA( &cls ), "Succeeded registering local class for user32\n" );
 496     ok( GetLastError() == ERROR_INVALID_PARAMETER, "Wrong error code %d\n", GetLastError() );
 497     cls.style |= CS_GLOBALCLASS;
 498     ok( !RegisterClassA( &cls ), "Succeeded registering global class for user32\n" );
 499     ok( GetLastError() == ERROR_INVALID_PARAMETER, "Wrong error code %d\n", GetLastError() );
 500
 501     /* unregister is OK though */
 502     cls.hInstance = main_module;
 503     ok( RegisterClassA( &cls ), "Failed to register global class for main module\n" );
 504     ok( UnregisterClassA( name, user32 ), "Unregister failed for user32\n" );
 505
 506     /* instance doesn't matter for global class */
 507     cls.style |= CS_GLOBALCLASS;
 508     cls.lpszMenuName  = "main_module";
 509     cls.hInstance = main_module;
 510     ok( RegisterClassA( &cls ), "Failed to register global class for main module\n" );
 511     cls.lpszMenuName  = "kernel32";
 512     cls.hInstance = kernel32;
 513     ok( !RegisterClassA( &cls ), "Succeeded registering local class for kernel32\n" );
 514     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 515     /* even if global flag is cleared */
 516     hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 517     SetClassLongA( hwnd, GCL_STYLE, 0 );
 518     ok( !RegisterClassA( &cls ), "Succeeded registering local class for kernel32\n" );
 519     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 520
 521     check_class( main_module, name, "main_module" );
 522     check_class( kernel32, name, "main_module" );
 523     check_class( 0, name, "main_module" );
 524     check_class( (HINSTANCE)0x12345678, name, "main_module" );
 525     check_instance( name, main_module, main_module, main_module );
 526     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, main_module );
 527     check_thread_instance( name, main_module, main_module, main_module );
 528     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, main_module );
 529
 530     /* changing the instance for global class doesn't make much difference */
 531     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0xdeadbeef );
 532     check_instance( name, main_module, main_module, (HINSTANCE)0xdeadbeef );
 533     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef );
 534     check_thread_instance( name, main_module, main_module, (HINSTANCE)0xdeadbeef );
 535     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef );
 536
 537     DestroyWindow( hwnd );
 538     ok( UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister failed for main module global\n" );
 539     ok( !UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister succeeded the second time\n" );
 540     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 541
 542     cls.hInstance = (HINSTANCE)0x12345678;
 543     ok( RegisterClassA( &cls ), "Failed to register global class for dummy instance\n" );
 544     check_instance( name, main_module, main_module, (HINSTANCE)0x12345678 );
 545     check_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0x12345678 );
 546     check_thread_instance( name, main_module, main_module, (HINSTANCE)0x12345678 );
 547     check_thread_instance( name, (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, (HINSTANCE)0x12345678 );
 548     ok( UnregisterClassA( name, (HINSTANCE)0x87654321 ), "Unregister failed for main module global\n" );
 549
 550     /* check system classes */
 551
 552     /* we cannot register a global class with the name of a system class */
 553     cls.style |= CS_GLOBALCLASS;
 554     cls.lpszMenuName  = "button_main_module";
 555     cls.lpszClassName = "BUTTON";
 556     cls.hInstance = main_module;
 557     ok( !RegisterClassA( &cls ), "Succeeded registering global button class for main module\n" );
 558     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 559     cls.hInstance = kernel32;
 560     ok( !RegisterClassA( &cls ), "Succeeded registering global button class for kernel32\n" );
 561     ok( GetLastError() == ERROR_CLASS_ALREADY_EXISTS, "Wrong error code %d\n", GetLastError() );
 562
 563     /* local class is OK however */
 564     cls.style &= ~CS_GLOBALCLASS;
 565     cls.lpszMenuName  = "button_main_module";
 566     cls.hInstance = main_module;
 567     ok( RegisterClassA( &cls ), "Failed to register local button class for main module\n" );
 568     check_class( main_module, "BUTTON", "button_main_module" );
 569     cls.lpszMenuName  = "button_kernel32";
 570     cls.hInstance = kernel32;
 571     ok( RegisterClassA( &cls ), "Failed to register local button class for kernel32\n" );
 572     check_class( kernel32, "BUTTON", "button_kernel32" );
 573     check_class( main_module, "BUTTON", "button_main_module" );
 574     ok( UnregisterClassA( "BUTTON", kernel32 ), "Unregister failed for kernel32 button\n" );
 575     ok( UnregisterClassA( "BUTTON", main_module ), "Unregister failed for main module button\n" );
 576     /* GetClassInfo sets instance to passed value for global classes */
 577     check_instance( "BUTTON", 0, 0, user32 );
 578     check_instance( "BUTTON", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 579     check_instance( "BUTTON", user32, zero_instance, user32 );
 580     check_thread_instance( "BUTTON", 0, 0, user32 );
 581     check_thread_instance( "BUTTON", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 582     check_thread_instance( "BUTTON", user32, zero_instance, user32 );
 583
 584     /* we can unregister system classes */
 585     ok( GetClassInfo( 0, "BUTTON", &wc ), "Button class not found with null instance\n" );
 586     ok( GetClassInfo( kernel32, "BUTTON", &wc ), "Button class not found with kernel32\n" );
 587     ok( UnregisterClass( "BUTTON", (HINSTANCE)0x12345678 ), "Failed to unregister button\n" );
 588     ok( !UnregisterClass( "BUTTON", (HINSTANCE)0x87654321 ), "Unregistered button a second time\n" );
 589     ok( GetLastError() == ERROR_CLASS_DOES_NOT_EXIST, "Wrong error code %d\n", GetLastError() );
 590     ok( !GetClassInfo( 0, "BUTTON", &wc ), "Button still exists\n" );
 591     /* last error not set reliably */
 592
 593     /* we can change the instance of a system class */
 594     check_instance( "EDIT", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 595     check_thread_instance( "EDIT", (HINSTANCE)0xdeadbeef, (HINSTANCE)0xdeadbeef, user32 );
 596     hwnd = CreateWindowExA( 0, "EDIT", "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
 597     SetClassLongPtrA( hwnd, GCLP_HMODULE, 0xdeadbeef );
 598     check_instance( "EDIT", (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0xdeadbeef );
 599     check_thread_instance( "EDIT", (HINSTANCE)0x12345678, (HINSTANCE)0x12345678, (HINSTANCE)0xdeadbeef );
 600     DestroyWindow(hwnd);
 601 }
 602
 603 static void test_builtinproc(void)
 604 {
 605     /* Edit behaves differently */
 606     static const CHAR NORMAL_CLASSES[][10] = {
 607         "Button",
 608         "Static",
 609         "ComboBox",
 610         "ComboLBox",
 611         "ListBox",
 612         "ScrollBar",
 613         "#32770",  /* dialog */
 614     };
 615     static const int NUM_NORMAL_CLASSES = (sizeof(NORMAL_CLASSES)/sizeof(NORMAL_CLASSES[0]));
 616     static const char classA[] = "deftest";
 617     static const WCHAR classW[] = {'d','e','f','t','e','s','t',0};
 618     WCHAR unistring[] = {0x142, 0x40e, 0x3b4, 0};  /* a string that would be destroyed by a W->A->W conversion */
 619     WNDPROC pDefWindowProcA, pDefWindowProcW;
 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
 630     for (i = 0; i < 4; i++)
 631     {
 632         ZeroMemory(&cls, sizeof(cls));
 633         cls.cbSize = sizeof(cls);
 634         cls.hInstance = GetModuleHandle(NULL);
 635         cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 636         if (i & 1)
 637             cls.lpfnWndProc = pDefWindowProcA;
 638         else
 639             cls.lpfnWndProc = pDefWindowProcW;
 640
 641         if (i & 2)
 642         {
 643             cls.lpszClassName = classA;
 644             atom = RegisterClassExA(&cls);
 645         }
 646         else
 647         {
 648             cls.lpszClassName = (LPCSTR)classW;
 649             atom = RegisterClassExW((WNDCLASSEXW *)&cls);
 650         }
 651         ok(atom != 0, "Couldn't register class, i=%d, %d\n", i, GetLastError());
 652
 653         hwnd = CreateWindowA(classA, NULL, 0, 0, 0, 100, 100, NULL, NULL, GetModuleHandle(NULL), NULL);
 654         ok(hwnd != NULL, "Couldn't create window i=%d\n", i);
 655
 656         ok(GetWindowLongPtrA(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA, "Wrong ANSI wndproc: %p vs %p\n",
 657             (void *)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), pDefWindowProcA);
 658         ok(GetClassLongPtrA(hwnd, GCLP_WNDPROC) == (ULONG_PTR)pDefWindowProcA, "Wrong ANSI wndproc: %p vs %p\n",
 659             (void *)GetClassLongPtrA(hwnd, GCLP_WNDPROC), pDefWindowProcA);
 660
 661         ok(GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcW, "Wrong Unicode wndproc: %p vs %p\n",
 662             (void *)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), pDefWindowProcW);
 663         ok(GetClassLongPtrW(hwnd, GCLP_WNDPROC) == (ULONG_PTR)pDefWindowProcW, "Wrong Unicode wndproc: %p vs %p\n",
 664             (void *)GetClassLongPtrW(hwnd, GCLP_WNDPROC), pDefWindowProcW);
 665
 666         DestroyWindow(hwnd);
 667         UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 668     }
 669
 670     /* built-in winproc - window A/W type automatically detected */
 671     ZeroMemory(&cls, sizeof(cls));
 672     cls.cbSize = sizeof(cls);
 673     cls.hInstance = GetModuleHandle(NULL);
 674     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 675     cls.lpszClassName = classA;
 676     cls.lpfnWndProc = pDefWindowProcW;
 677     atom = RegisterClassExA(&cls);
 678
 679     hwnd = CreateWindowExW(0, classW, NULL, WS_OVERLAPPEDWINDOW,
 680         CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
 681     ok(IsWindowUnicode(hwnd), "Windows should be Unicode\n");
 682     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)pDefWindowProcA);
 683     ok(IsWindowUnicode(hwnd), "Windows should have remained Unicode\n");
 684     if (GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA)
 685     {
 686         /* DefWindowProc isn't magic on wow64 */
 687         ok(IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Ansi winproc is not a handle\n");
 688     }
 689     else
 690     {
 691         ok(GetWindowLongPtrW(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcW, "Invalid Unicode winproc\n");
 692         ok(GetWindowLongPtrA(hwnd, GWLP_WNDPROC) == (LONG_PTR)pDefWindowProcA, "Invalid Ansi winproc\n");
 693     }
 694     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 695     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have switched window to ANSI\n");
 696
 697     DestroyWindow(hwnd);
 698     UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 699
 700     /* custom winproc - the same function can be used as both A and W*/
 701     ZeroMemory(&cls, sizeof(cls));
 702     cls.cbSize = sizeof(cls);
 703     cls.hInstance = GetModuleHandle(NULL);
 704     cls.hbrBackground = GetStockObject (WHITE_BRUSH);
 705     cls.lpszClassName = classA;
 706     cls.lpfnWndProc = ClassTest_WndProc2;
 707     atom = RegisterClassExA(&cls);
 708
 709     hwnd = CreateWindowExW(0, classW, NULL, WS_OVERLAPPEDWINDOW,
 710         CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, GetModuleHandleA(NULL), 0);
 711     ok(IsWindowUnicode(hwnd) == FALSE, "Window should be ANSI\n");
 712     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 713     ok(IsWindowUnicode(hwnd), "SetWindowLongPtrW should have changed window to Unicode\n");
 714     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 715     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have changed window to ANSI\n");
 716
 717     DestroyWindow(hwnd);
 718     UnregisterClass((LPSTR)(DWORD_PTR)atom, GetModuleHandle(NULL));
 719
 720     /* For most of the builtin controls both GetWindowLongPtrA and W returns a pointer that is executed directly
 721      * by CallWindowProcA/W */
 722     for (i = 0; i < NUM_NORMAL_CLASSES; i++)
 723     {
 724         WNDPROC procA, procW;
 725         hwnd = CreateWindowExA(0, NORMAL_CLASSES[i], classA, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 680, 260,
 726             NULL, NULL, NULL, 0);
 727         ok(hwnd != NULL, "Couldn't create window of class %s\n", NORMAL_CLASSES[i]);
 728         SetWindowText(hwnd, classA);  /* ComboBox needs this */
 729         procA = (WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC);
 730         procW = (WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC);
 731         ok(!IS_WNDPROC_HANDLE(procA), "procA should not be a handle for %s (%p)\n", NORMAL_CLASSES[i], procA);
 732         ok(!IS_WNDPROC_HANDLE(procW), "procW should not be a handle for %s (%p)\n", NORMAL_CLASSES[i], procW);
 733         CallWindowProcA(procA, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 734         ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT A/A invalid return for class %s\n", NORMAL_CLASSES[i]);
 735         CallWindowProcA(procW, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 736         ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT A/W invalid return for class %s\n", NORMAL_CLASSES[i]);
 737         CallWindowProcW(procA, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 738         ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT W/A invalid return for class %s\n", NORMAL_CLASSES[i]);
 739         CallWindowProcW(procW, hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 740         ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT W/W invalid return for class %s\n", NORMAL_CLASSES[i]);
 741
 742         oldproc = (WNDPROC)SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 743         ok(IS_WNDPROC_HANDLE(oldproc) == FALSE, "Class %s shouldn't return a handle\n", NORMAL_CLASSES[i]);
 744         SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 745         DestroyWindow(hwnd);
 746     }
 747
 748     /* Edit controls are special - they return a wndproc handle when GetWindowLongPtr is called with a different A/W.
 749      * On the other hand there is no W->A->W conversion so this control is treated specially. */
 750     hwnd = CreateWindowW(WC_EDITW, unistring, WS_OVERLAPPEDWINDOW,
 751       CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, NULL, 0);
 752     /* GetClassLongPtr returns that both the Unicode and ANSI wndproc */
 753     ok(IS_WNDPROC_HANDLE(GetClassLongPtrA(hwnd, GCLP_WNDPROC)) == FALSE, "Edit control class should have a Unicode wndproc\n");
 754     ok(IS_WNDPROC_HANDLE(GetClassLongPtrW(hwnd, GCLP_WNDPROC)) == FALSE, "Edit control class should have a ANSI wndproc\n");
 755     /* But GetWindowLongPtr returns only a handle for the ANSI one */
 756     ok(IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Edit control should return a wndproc handle\n");
 757     ok(!IS_WNDPROC_HANDLE(GetWindowLongPtrW(hwnd, GWLP_WNDPROC)), "Edit control shouldn't return a W wndproc handle\n");
 758     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 759     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 760     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 761     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 762     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 763     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 764
 765     SetWindowTextW(hwnd, classW);
 766     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 767     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 768
 769     oldproc = (WNDPROC)SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc2);
 770     /* SetWindowLongPtr returns a wndproc handle - like GetWindowLongPtr */
 771     ok(IS_WNDPROC_HANDLE(oldproc), "Edit control should return a wndproc handle\n");
 772     ok(IsWindowUnicode(hwnd) == FALSE, "SetWindowLongPtrA should have changed window to ANSI\n");
 773     SetWindowTextA(hwnd, classA);  /* Windows resets the title to WideStringToMultiByte(unistring) */
 774     memset(buf, 0, sizeof(buf));
 775     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 776     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 777     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 778     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 779     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 780     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 781
 782     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 783     ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT invalid return\n");
 784
 785     SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 786
 787     DestroyWindow(hwnd);
 788
 789     hwnd = CreateWindowA(WC_EDITA, classA, WS_OVERLAPPEDWINDOW,
 790       CW_USEDEFAULT, CW_USEDEFAULT, 680, 260, NULL, NULL, NULL, 0);
 791
 792     /* GetClassLongPtr returns that both the Unicode and ANSI wndproc */
 793     ok(!IS_WNDPROC_HANDLE(GetClassLongPtrA(hwnd, GCLP_WNDPROC)), "Edit control class should have a Unicode wndproc\n");
 794     ok(!IS_WNDPROC_HANDLE(GetClassLongPtrW(hwnd, GCLP_WNDPROC)), "Edit control class should have a ANSI wndproc\n");
 795     /* But GetWindowLongPtr returns only a handle for the Unicode one */
 796     ok(!IS_WNDPROC_HANDLE(GetWindowLongPtrA(hwnd, GWLP_WNDPROC)), "Edit control shouldn't return an A wndproc handle\n");
 797     ok(IS_WNDPROC_HANDLE(GetWindowLongPtrW(hwnd, GWLP_WNDPROC)), "Edit control should return a wndproc handle\n");
 798     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 799     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 800     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 801     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 802     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 803     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 804
 805     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 806     ok(memcmp(buf, classW, sizeof(classW)) == 0, "WM_GETTEXT invalid return\n");
 807
 808     oldproc = (WNDPROC)SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ClassTest_WndProc);
 809     SetWindowTextW(hwnd, unistring);
 810     CallWindowProcW((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 811     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 812     CallWindowProcA((WNDPROC)GetWindowLongPtrW(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 813     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 814     CallWindowProcW((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 815     ok(memcmp(buf, unistring, sizeof(unistring)) == 0, "WM_GETTEXT invalid return\n");
 816
 817     SetWindowTextW(hwnd, classW);
 818     CallWindowProcA((WNDPROC)GetWindowLongPtrA(hwnd, GWLP_WNDPROC), hwnd, WM_GETTEXT, 120, (LPARAM)buf);
 819     ok(memcmp(buf, classA, sizeof(classA)) == 0, "WM_GETTEXT invalid return\n");
 820
 821     SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)oldproc);
 822
 823     DestroyWindow(hwnd);
 824 }
 825
 826
 827 static LRESULT WINAPI TestDlgProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 828 {
 829     return DefWindowProc(hWnd, uMsg, wParam, lParam);
 830 }
 831
 832 static BOOL RegisterTestDialog(HINSTANCE hInstance)
 833 {
 834     WNDCLASSEX wcx;
 835     ATOM atom = 0;
 836
 837     ZeroMemory(&wcx, sizeof(WNDCLASSEX));
 838     wcx.cbSize = sizeof(wcx);
 839     wcx.lpfnWndProc = TestDlgProc;
 840     wcx.cbClsExtra = 0;
 841     wcx.cbWndExtra = DLGWINDOWEXTRA;
 842     wcx.hInstance = hInstance;
 843     wcx.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 844     wcx.hCursor = LoadCursor(NULL, IDC_ARROW);
 845     wcx.hbrBackground = GetStockObject(WHITE_BRUSH);
 846     wcx.lpszClassName = "TestDialog";
 847     wcx.lpszMenuName =  "TestDialog";
 848     wcx.hIconSm = LoadImage(hInstance, MAKEINTRESOURCE(5), IMAGE_ICON,
 849         GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON),
 850         LR_DEFAULTCOLOR);
 851
 852     atom = RegisterClassEx(&wcx);
 853     ok(atom != 0, "RegisterClassEx returned 0\n");
 854
 855     return atom;
 856 }
 857
 858 /* test registering a dialog box created by using the CLASS directive in a
 859    resource file, then test creating the dialog using CreateDialogParam. */
 860 static void CreateDialogParamTest(HINSTANCE hInstance)
 861 {
 862     HWND hWndMain;
 863
 864     if (RegisterTestDialog(hInstance))
 865     {
 866         hWndMain = CreateDialogParam(hInstance, "CLASS_TEST_DIALOG", NULL, 0, 0);
 867         ok(hWndMain != NULL, "CreateDialogParam returned NULL\n");
 868         ShowWindow(hWndMain, SW_SHOW);
 869         DestroyWindow(hWndMain);
 870     }
 871 }
 872
 873 static const struct
 874 {
 875     const char name[9];
 876     int value;
 877     int badvalue;
 878 } extra_values[] =
 879 {
 880     {"#32770",30,30}, /* Dialog */
 881 #ifdef _WIN64
 882     {"Edit",8,8},
 883 #else
 884     {"Edit",6,8},     /* Windows XP 64-bit returns 8 also to 32-bit applications */
 885 #endif
 886 };
 887
 888 static void test_extra_values(void)
 889 {
 890     int i;
 891     for(i=0; i< sizeof(extra_values)/sizeof(extra_values[0]); i++)
 892     {
 893         WNDCLASSEX wcx;
 894         BOOL ret = GetClassInfoEx(NULL,extra_values[i].name,&wcx);
 895
 896         ok( ret, "GetClassInfo (0) failed for global class %s\n", extra_values[i].name);
 897         if (!ret) continue;
 898         ok(extra_values[i].value == wcx.cbWndExtra || broken(extra_values[i].badvalue == wcx.cbWndExtra),
 899            "expected %d, got %d\n", extra_values[i].value, wcx.cbWndExtra);
 900     }
 901 }
 902
 903 static void test_GetClassInfo(void)
 904 {
 905     static const WCHAR staticW[] = {'s','t','a','t','i','c',0};
 906     WNDCLASSA wc;
 907     WNDCLASSEXA wcx;
 908     BOOL ret;
 909
 910     SetLastError(0xdeadbeef);
 911     ret = GetClassInfoA(0, "static", &wc);
 912     ok(ret, "GetClassInfoA() error %d\n", GetLastError());
 913
 914 if (0) { /* crashes under XP */
 915     SetLastError(0xdeadbeef);
 916     ret = GetClassInfoA(0, "static", NULL);
 917     ok(ret, "GetClassInfoA() error %d\n", GetLastError());
 918
 919     SetLastError(0xdeadbeef);
 920     ret = GetClassInfoW(0, staticW, NULL);
 921     ok(ret, "GetClassInfoW() error %d\n", GetLastError());
 922 }
 923
 924     wcx.cbSize = sizeof(wcx);
 925     SetLastError(0xdeadbeef);
 926     ret = GetClassInfoExA(0, "static", &wcx);
 927     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 928
 929     SetLastError(0xdeadbeef);
 930     ret = GetClassInfoExA(0, "static", NULL);
 931     ok(!ret, "GetClassInfoExA() should fail\n");
 932     ok(GetLastError() == ERROR_NOACCESS ||
 933        broken(GetLastError() == 0xdeadbeef), /* win9x */
 934        "expected ERROR_NOACCESS, got %d\n", GetLastError());
 935
 936     SetLastError(0xdeadbeef);
 937     ret = GetClassInfoExW(0, staticW, NULL);
 938     ok(!ret, "GetClassInfoExW() should fail\n");
 939     ok(GetLastError() == ERROR_NOACCESS ||
 940        broken(GetLastError() == 0xdeadbeef) /* NT4 */ ||
 941        broken(GetLastError() == ERROR_CALL_NOT_IMPLEMENTED), /* win9x */
 942        "expected ERROR_NOACCESS, got %d\n", GetLastError());
 943
 944     wcx.cbSize = 0;
 945     SetLastError(0xdeadbeef);
 946     ret = GetClassInfoExA(0, "static", &wcx);
 947     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 948     ok(wcx.cbSize == 0, "expected 0, got %u\n", wcx.cbSize);
 949
 950     wcx.cbSize = sizeof(wcx) - 1;
 951     SetLastError(0xdeadbeef);
 952     ret = GetClassInfoExA(0, "static", &wcx);
 953     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 954     ok(wcx.cbSize == sizeof(wcx) - 1, "expected sizeof(wcx)-1, got %u\n", wcx.cbSize);
 955
 956     wcx.cbSize = sizeof(wcx) + 1;
 957     SetLastError(0xdeadbeef);
 958     ret = GetClassInfoExA(0, "static", &wcx);
 959     ok(ret, "GetClassInfoExA() error %d\n", GetLastError());
 960     ok(wcx.cbSize == sizeof(wcx) + 1, "expected sizeof(wcx)+1, got %u\n", wcx.cbSize);
 961 }
 962
 963 START_TEST(class)
 964 {
 965     HANDLE hInstance = GetModuleHandleA( NULL );
 966
 967     test_GetClassInfo();
 968     test_extra_values();
 969
 970     if (!GetModuleHandleW(0))
 971     {
 972         trace("Class test is incompatible with Win9x implementation, skipping\n");
 973         return;
 974     }
 975
 976     ClassTest(hInstance,FALSE);
 977     ClassTest(hInstance,TRUE);
 978     CreateDialogParamTest(hInstance);
 979     test_styles();
 980     test_builtinproc();
 981
 982     /* this test unregisters the Button class so it should be executed at the end */
 983     test_instances();
 984 }