dlls/user32/tests/winstation.c

   1 /*
   2  * Unit tests for window stations and desktops
   3  *
   4  * Copyright 2002 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 #include "wine/test.h"
  22 #include "winbase.h"
  23 #include "wingdi.h"
  24 #include "winuser.h"
  25 #include "winnls.h"
  26
  27 #define DESKTOP_ALL_ACCESS 0x01ff
  28
  29 static void print_object( HANDLE obj )
  30 {
  31     char buffer[100];
  32     DWORD size;
  33
  34     strcpy( buffer, "foobar" );
  35     if (!GetUserObjectInformationA( obj, UOI_NAME, buffer, sizeof(buffer), &size ))
  36         trace( "could not get info for %p\n", obj );
  37     else
  38         trace( "obj %p name '%s'\n", obj, buffer );
  39     strcpy( buffer, "foobar" );
  40     if (!GetUserObjectInformationA( obj, UOI_TYPE, buffer, sizeof(buffer), &size ))
  41         trace( "could not get type for %p\n", obj );
  42     else
  43         trace( "obj %p type '%s'\n", obj, buffer );
  44 }
  45
  46 static void register_class(void)
  47 {
  48     WNDCLASSA cls;
  49
  50     cls.style = CS_DBLCLKS;
  51     cls.lpfnWndProc = DefWindowProcA;
  52     cls.cbClsExtra = 0;
  53     cls.cbWndExtra = 0;
  54     cls.hInstance = GetModuleHandleA(0);
  55     cls.hIcon = 0;
  56     cls.hCursor = LoadCursorA(0, IDC_ARROW);
  57     cls.hbrBackground = GetStockObject(WHITE_BRUSH);
  58     cls.lpszMenuName = NULL;
  59     cls.lpszClassName = "WinStationClass";
  60     RegisterClassA(&cls);
  61 }
  62
  63 static HDESK initial_desktop;
  64
  65 static DWORD CALLBACK thread( LPVOID arg )
  66 {
  67     HDESK d1, d2;
  68     HWND hwnd = CreateWindowExA(0,"WinStationClass","test",WS_POPUP,0,0,100,100,GetDesktopWindow(),0,0,0);
  69     ok( hwnd != 0, "CreateWindow failed\n" );
  70     d1 = GetThreadDesktop(GetCurrentThreadId());
  71     trace( "thread %p desktop: %p\n", arg, d1 );
  72     ok( d1 == initial_desktop, "thread %p doesn't use initial desktop\n", arg );
  73
  74     SetLastError( 0xdeadbeef );
  75     ok( !CloseHandle( d1 ), "CloseHandle succeeded\n" );
  76     ok( GetLastError() == ERROR_INVALID_HANDLE, "bad last error %d\n", GetLastError() );
  77     SetLastError( 0xdeadbeef );
  78     ok( !CloseDesktop( d1 ), "CloseDesktop succeeded\n" );
  79     ok( GetLastError() == ERROR_BUSY || broken(GetLastError() == 0xdeadbeef), /* wow64 */
  80         "bad last error %d\n", GetLastError() );
  81     print_object( d1 );
  82     d2 = CreateDesktop( "foobar2", NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
  83     trace( "created desktop %p\n", d2 );
  84     ok( d2 != 0, "CreateDesktop failed\n" );
  85
  86     SetLastError( 0xdeadbeef );
  87     ok( !SetThreadDesktop( d2 ), "set thread desktop succeeded with existing window\n" );
  88     ok( GetLastError() == ERROR_BUSY || broken(GetLastError() == 0xdeadbeef), /* wow64 */
  89         "bad last error %d\n", GetLastError() );
  90
  91     DestroyWindow( hwnd );
  92     ok( SetThreadDesktop( d2 ), "set thread desktop failed\n" );
  93     d1 = GetThreadDesktop(GetCurrentThreadId());
  94     ok( d1 == d2, "GetThreadDesktop did not return set desktop %p/%p\n", d1, d2 );
  95     print_object( d2 );
  96     if (arg < (LPVOID)5)
  97     {
  98         HANDLE hthread = CreateThread( NULL, 0, thread, (char *)arg + 1, 0, NULL );
  99         Sleep(1000);
 100         WaitForSingleObject( hthread, INFINITE );
 101         CloseHandle( hthread );
 102     }
 103     return 0;
 104 }
 105
 106 static void test_handles(void)
 107 {
 108     HWINSTA w1, w2, w3;
 109     HDESK d1, d2, d3;
 110     HANDLE hthread;
 111     DWORD id, flags, le;
 112     ATOM atom;
 113     char buffer[20];
 114
 115     /* win stations */
 116
 117     w1 = GetProcessWindowStation();
 118     ok( GetProcessWindowStation() == w1, "GetProcessWindowStation returned different handles\n" );
 119     ok( !CloseWindowStation(w1), "closing process win station succeeded\n" );
 120     SetLastError( 0xdeadbeef );
 121     ok( !CloseHandle(w1), "closing process win station handle succeeded\n" );
 122     ok( GetLastError() == ERROR_INVALID_HANDLE, "bad last error %d\n", GetLastError() );
 123     print_object( w1 );
 124
 125     flags = 0;
 126     ok( GetHandleInformation( w1, &flags ), "GetHandleInformation failed\n" );
 127     ok( !(flags & HANDLE_FLAG_PROTECT_FROM_CLOSE) ||
 128         broken(flags & HANDLE_FLAG_PROTECT_FROM_CLOSE), /* set on nt4 */
 129         "handle %p PROTECT_FROM_CLOSE set\n", w1 );
 130
 131     ok( DuplicateHandle( GetCurrentProcess(), w1, GetCurrentProcess(), (PHANDLE)&w2, 0,
 132                          TRUE, DUPLICATE_SAME_ACCESS ), "DuplicateHandle failed\n" );
 133     ok( CloseWindowStation(w2), "closing dup win station failed\n" );
 134
 135     ok( DuplicateHandle( GetCurrentProcess(), w1, GetCurrentProcess(), (PHANDLE)&w2, 0,
 136                          TRUE, DUPLICATE_SAME_ACCESS ), "DuplicateHandle failed\n" );
 137     ok( CloseHandle(w2), "closing dup win station handle failed\n" );
 138
 139     w2 = CreateWindowStation("WinSta0", 0, WINSTA_ALL_ACCESS, NULL );
 140     le = GetLastError();
 141     ok( w2 != 0 || le == ERROR_ACCESS_DENIED, "CreateWindowStation failed (%u)\n", le );
 142     if (w2 != 0)
 143     {
 144         ok( w2 != w1, "CreateWindowStation returned default handle\n" );
 145         SetLastError( 0xdeadbeef );
 146         ok( !CloseDesktop( (HDESK)w2 ), "CloseDesktop succeeded on win station\n" );
 147         ok( GetLastError() == ERROR_INVALID_HANDLE || broken(GetLastError() == 0xdeadbeef), /* wow64 */
 148             "bad last error %d\n", GetLastError() );
 149         ok( CloseWindowStation( w2 ), "CloseWindowStation failed\n" );
 150
 151         w2 = CreateWindowStation("WinSta0", 0, WINSTA_ALL_ACCESS, NULL );
 152         ok( CloseHandle( w2 ), "CloseHandle failed\n" );
 153     }
 154     else if (le == ERROR_ACCESS_DENIED)
 155         win_skip( "Not enough privileges for CreateWindowStation\n" );
 156
 157     w2 = OpenWindowStation("winsta0", TRUE, WINSTA_ALL_ACCESS );
 158     ok( w2 != 0, "OpenWindowStation failed\n" );
 159     ok( w2 != w1, "OpenWindowStation returned default handle\n" );
 160     ok( CloseWindowStation( w2 ), "CloseWindowStation failed\n" );
 161
 162     w2 = OpenWindowStation("dummy name", TRUE, WINSTA_ALL_ACCESS );
 163     ok( !w2, "open dummy win station succeeded\n" );
 164
 165     CreateMutexA( NULL, 0, "foobar" );
 166     w2 = CreateWindowStation("foobar", 0, WINSTA_ALL_ACCESS, NULL );
 167     le = GetLastError();
 168     ok( w2 != 0 || le == ERROR_ACCESS_DENIED, "create foobar station failed (%u)\n", le );
 169
 170     if (w2 != 0)
 171     {
 172         w3 = OpenWindowStation("foobar", TRUE, WINSTA_ALL_ACCESS );
 173         ok( w3 != 0, "open foobar station failed\n" );
 174         ok( w3 != w2, "open foobar station returned same handle\n" );
 175         ok( CloseWindowStation( w2 ), "CloseWindowStation failed\n" );
 176         ok( CloseWindowStation( w3 ), "CloseWindowStation failed\n" );
 177
 178         w3 = OpenWindowStation("foobar", TRUE, WINSTA_ALL_ACCESS );
 179         ok( !w3, "open foobar station succeeded\n" );
 180
 181         w2 = CreateWindowStation("foobar1", 0, WINSTA_ALL_ACCESS, NULL );
 182         ok( w2 != 0, "create foobar station failed\n" );
 183         w3 = CreateWindowStation("foobar2", 0, WINSTA_ALL_ACCESS, NULL );
 184         ok( w3 != 0, "create foobar station failed\n" );
 185         ok( GetHandleInformation( w2, &flags ), "GetHandleInformation failed\n" );
 186         ok( GetHandleInformation( w3, &flags ), "GetHandleInformation failed\n" );
 187
 188         SetProcessWindowStation( w2 );
 189         atom = GlobalAddAtomA("foo");
 190         ok( GlobalGetAtomNameA( atom, buffer, sizeof(buffer) ) == 3, "GlobalGetAtomName failed\n" );
 191         ok( !lstrcmpiA( buffer, "foo" ), "bad atom value %s\n", buffer );
 192
 193         ok( !CloseWindowStation( w2 ), "CloseWindowStation succeeded\n" );
 194         ok( GetHandleInformation( w2, &flags ), "GetHandleInformation failed\n" );
 195
 196         SetProcessWindowStation( w3 );
 197         ok( GetHandleInformation( w2, &flags ), "GetHandleInformation failed\n" );
 198         ok( CloseWindowStation( w2 ), "CloseWindowStation failed\n" );
 199         ok( GlobalGetAtomNameA( atom, buffer, sizeof(buffer) ) == 3, "GlobalGetAtomName failed\n" );
 200         ok( !lstrcmpiA( buffer, "foo" ), "bad atom value %s\n", buffer );
 201     }
 202     else if (le == ERROR_ACCESS_DENIED)
 203         win_skip( "Not enough privileges for CreateWindowStation\n" );
 204
 205     /* desktops */
 206     d1 = GetThreadDesktop(GetCurrentThreadId());
 207     initial_desktop = d1;
 208     ok( GetThreadDesktop(GetCurrentThreadId()) == d1,
 209         "GetThreadDesktop returned different handles\n" );
 210
 211     flags = 0;
 212     ok( GetHandleInformation( d1, &flags ), "GetHandleInformation failed\n" );
 213     ok( !(flags & HANDLE_FLAG_PROTECT_FROM_CLOSE), "handle %p PROTECT_FROM_CLOSE set\n", d1 );
 214
 215     SetLastError( 0xdeadbeef );
 216     ok( !CloseDesktop(d1), "closing thread desktop succeeded\n" );
 217     ok( GetLastError() == ERROR_BUSY || broken(GetLastError() == 0xdeadbeef), /* wow64 */
 218         "bad last error %d\n", GetLastError() );
 219
 220     SetLastError( 0xdeadbeef );
 221     if (CloseHandle( d1 ))  /* succeeds on nt4 */
 222     {
 223         win_skip( "NT4 desktop handle management is completely different\n" );
 224         return;
 225     }
 226     ok( GetLastError() == ERROR_INVALID_HANDLE, "bad last error %d\n", GetLastError() );
 227
 228     ok( DuplicateHandle( GetCurrentProcess(), d1, GetCurrentProcess(), (PHANDLE)&d2, 0,
 229                          TRUE, DUPLICATE_SAME_ACCESS ), "DuplicateHandle failed\n" );
 230     ok( CloseDesktop(d2), "closing dup desktop failed\n" );
 231
 232     ok( DuplicateHandle( GetCurrentProcess(), d1, GetCurrentProcess(), (PHANDLE)&d2, 0,
 233                          TRUE, DUPLICATE_SAME_ACCESS ), "DuplicateHandle failed\n" );
 234     ok( CloseHandle(d2), "closing dup desktop handle failed\n" );
 235
 236     d2 = OpenDesktop( "dummy name", 0, TRUE, DESKTOP_ALL_ACCESS );
 237     ok( !d2, "open dummy desktop succeeded\n" );
 238
 239     d2 = CreateDesktop( "foobar", NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
 240     ok( d2 != 0, "create foobar desktop failed\n" );
 241     SetLastError( 0xdeadbeef );
 242     ok( !CloseWindowStation( (HWINSTA)d2 ), "CloseWindowStation succeeded on desktop\n" );
 243     ok( GetLastError() == ERROR_INVALID_HANDLE || broken(GetLastError() == 0xdeadbeef), /* wow64 */
 244         "bad last error %d\n", GetLastError() );
 245
 246     SetLastError( 0xdeadbeef );
 247     d3 = CreateDesktop( "foobar", NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL );
 248     ok( d3 != 0, "create foobar desktop again failed\n" );
 249     ok( GetLastError() == 0xdeadbeef, "bad last error %d\n", GetLastError() );
 250     ok( CloseDesktop( d3 ), "CloseDesktop failed\n" );
 251
 252     d3 = OpenDesktop( "foobar", 0, TRUE, DESKTOP_ALL_ACCESS );
 253     ok( d3 != 0, "open foobar desktop failed\n" );
 254     ok( d3 != d2, "open foobar desktop returned same handle\n" );
 255     ok( CloseDesktop( d2 ), "CloseDesktop failed\n" );
 256     ok( CloseDesktop( d3 ), "CloseDesktop failed\n" );
 257
 258     d3 = OpenDesktop( "foobar", 0, TRUE, DESKTOP_ALL_ACCESS );
 259     ok( !d3, "open foobar desktop succeeded\n" );
 260
 261     ok( !CloseHandle(d1), "closing thread desktop handle succeeded\n" );
 262     d2 = GetThreadDesktop(GetCurrentThreadId());
 263     ok( d1 == d2, "got different handles after close\n" );
 264
 265     register_class();
 266     trace( "thread 1 desktop: %p\n", d1 );
 267     print_object( d1 );
 268     hthread = CreateThread( NULL, 0, thread, (LPVOID)2, 0, &id );
 269     Sleep(1000);
 270     trace( "get other thread desktop: %p\n", GetThreadDesktop(id) );
 271     WaitForSingleObject( hthread, INFINITE );
 272     CloseHandle( hthread );
 273 }
 274
 275 /* Enumeration tests */
 276
 277 static BOOL CALLBACK window_station_callbackA(LPSTR winsta, LPARAM lp)
 278 {
 279     trace("window_station_callbackA called with argument %s\n", winsta);
 280     return lp;
 281 }
 282
 283 static BOOL CALLBACK open_window_station_callbackA(LPSTR winsta, LPARAM lp)
 284 {
 285     HWINSTA hwinsta;
 286
 287     trace("open_window_station_callbackA called with argument %s\n", winsta);
 288     hwinsta = OpenWindowStationA(winsta, FALSE, WINSTA_ENUMERATE);
 289     ok(hwinsta != NULL, "Could not open desktop %s!\n", winsta);
 290     if (hwinsta)
 291         CloseWindowStation(hwinsta);
 292     return lp;
 293 }
 294
 295 static void test_enumstations(void)
 296 {
 297     BOOL ret;
 298
 299     if (0) /* Crashes instead */
 300     {
 301         SetLastError(0xbabefeed);
 302         ret = EnumWindowStationsA(NULL, 0);
 303         ok(!ret, "EnumWindowStationsA returned successfully!\n");
 304         ok(GetLastError() == ERROR_INVALID_PARAMETER, "LastError is set to %08x\n", GetLastError());
 305     }
 306
 307     SetLastError(0xdeadbeef);
 308     ret = EnumWindowStationsA(open_window_station_callbackA, 0x12345);
 309     ok(ret == 0x12345, "EnumWindowStationsA returned %x\n", ret);
 310     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 311
 312     SetLastError(0xdeadbeef);
 313     ret = EnumWindowStationsA(window_station_callbackA, 0);
 314     ok(!ret, "EnumWindowStationsA returned %x\n", ret);
 315     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 316 }
 317
 318 static BOOL CALLBACK desktop_callbackA(LPSTR desktop, LPARAM lp)
 319 {
 320     trace("desktop_callbackA called with argument %s\n", desktop);
 321     return lp;
 322 }
 323
 324 static BOOL CALLBACK open_desktop_callbackA(LPSTR desktop, LPARAM lp)
 325 {
 326     HDESK hdesk;
 327     static int once;
 328
 329     trace("open_desktop_callbackA called with argument %s\n", desktop);
 330     /* Only try to open one desktop */
 331     if (once++)
 332         return lp;
 333
 334     hdesk = OpenDesktopA(desktop, 0, FALSE, DESKTOP_ENUMERATE);
 335     ok(hdesk != NULL, "Could not open desktop %s!\n", desktop);
 336     if (hdesk)
 337         CloseDesktop(hdesk);
 338     return lp;
 339 }
 340
 341 static void test_enumdesktops(void)
 342 {
 343     BOOL ret;
 344
 345     if (0)  /* Crashes instead */
 346     {
 347         SetLastError(0xbabefeed);
 348         ret = EnumDesktopsA(GetProcessWindowStation(), NULL, 0);
 349         ok(!ret, "EnumDesktopsA returned successfully!\n");
 350         ok(GetLastError() == ERROR_INVALID_PARAMETER, "LastError is set to %08x\n", GetLastError());
 351     }
 352
 353     SetLastError(0xdeadbeef);
 354     ret = EnumDesktopsA(NULL, desktop_callbackA, 0x12345);
 355     ok(ret == 0x12345, "EnumDesktopsA returned %x\n", ret);
 356     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 357
 358     SetLastError(0xdeadbeef);
 359     ret = EnumDesktopsA(GetProcessWindowStation(), open_desktop_callbackA, 0x12345);
 360     ok(ret == 0x12345, "EnumDesktopsA returned %x\n", ret);
 361     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 362
 363     SetLastError(0xdeadbeef);
 364     ret = EnumDesktopsA(INVALID_HANDLE_VALUE, desktop_callbackA, 0x12345);
 365     ok(!ret, "EnumDesktopsA returned %x\n", ret);
 366     ok(GetLastError() == ERROR_INVALID_HANDLE, "LastError is set to %08x\n", GetLastError());
 367
 368     SetLastError(0xdeadbeef);
 369     ret = EnumDesktopsA(GetProcessWindowStation(), desktop_callbackA, 0);
 370     ok(!ret, "EnumDesktopsA returned %x\n", ret);
 371     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 372 }
 373
 374 /* Miscellaneous tests */
 375
 376 static void test_getuserobjectinformation(void)
 377 {
 378     HDESK desk;
 379     WCHAR bufferW[20];
 380     char buffer[20];
 381     WCHAR foobarTestW[] = {'f','o','o','b','a','r','T','e','s','t',0};
 382     WCHAR DesktopW[] = {'D','e','s','k','t','o','p',0};
 383     DWORD size;
 384     BOOL ret;
 385
 386     desk = CreateDesktop("foobarTest", NULL, NULL, 0, DESKTOP_ALL_ACCESS, NULL);
 387     ok(desk != 0, "open foobarTest desktop failed\n");
 388
 389     strcpy(buffer, "blahblah");
 390
 391     /** Tests for UOI_NAME **/
 392
 393     /* Get size, test size and return value/error code */
 394     SetLastError(0xdeadbeef);
 395     size = 0xdeadbeef;
 396     ret = GetUserObjectInformationA(desk, UOI_NAME, NULL, 0, &size);
 397
 398     ok(!ret, "GetUserObjectInformationA returned %x\n", ret);
 399     ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "LastError is set to %08x\n", GetLastError());
 400     ok(size == 22, "size is set to %d\n", size); /* Windows returns Unicode length (11*2) */
 401
 402     /* Get string */
 403     SetLastError(0xdeadbeef);
 404     size = 0xdeadbeef;
 405     ret = GetUserObjectInformationA(desk, UOI_NAME, buffer, sizeof(buffer), &size);
 406
 407     ok(ret, "GetUserObjectInformationA returned %x\n", ret);
 408     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 409
 410     ok(strcmp(buffer, "foobarTest") == 0, "Buffer is set to '%s'\n", buffer);
 411     ok(size == 11, "size is set to %d\n", size); /* 11 bytes in 'foobarTest\0' */
 412
 413     /* Get size, test size and return value/error code (Unicode) */
 414     SetLastError(0xdeadbeef);
 415     size = 0xdeadbeef;
 416     ret = GetUserObjectInformationW(desk, UOI_NAME, NULL, 0, &size);
 417
 418     ok(!ret, "GetUserObjectInformationW returned %x\n", ret);
 419     ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "LastError is set to %08x\n", GetLastError());
 420     ok(size == 22, "size is set to %d\n", size);  /* 22 bytes in 'foobarTest\0' in Unicode */
 421
 422     /* Get string (Unicode) */
 423     SetLastError(0xdeadbeef);
 424     size = 0xdeadbeef;
 425     ret = GetUserObjectInformationW(desk, UOI_NAME, bufferW, sizeof(bufferW), &size);
 426
 427     ok(ret, "GetUserObjectInformationW returned %x\n", ret);
 428     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 429
 430     ok(lstrcmpW(bufferW, foobarTestW) == 0, "Buffer is not set to 'foobarTest'\n");
 431     ok(size == 22, "size is set to %d\n", size);  /* 22 bytes in 'foobarTest\0' in Unicode */
 432
 433     /** Tests for UOI_TYPE **/
 434
 435     /* Get size, test size and return value/error code */
 436     SetLastError(0xdeadbeef);
 437     size = 0xdeadbeef;
 438     ret = GetUserObjectInformationA(desk, UOI_TYPE, NULL, 0, &size);
 439
 440     ok(!ret, "GetUserObjectInformationA returned %x\n", ret);
 441     ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "LastError is set to %08x\n", GetLastError());
 442     ok(size == 16, "size is set to %d\n", size); /* Windows returns Unicode length (8*2) */
 443
 444     /* Get string */
 445     SetLastError(0xdeadbeef);
 446     size = 0xdeadbeef;
 447     ret = GetUserObjectInformationA(desk, UOI_TYPE, buffer, sizeof(buffer), &size);
 448
 449     ok(ret, "GetUserObjectInformationA returned %x\n", ret);
 450     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 451
 452     ok(strcmp(buffer, "Desktop") == 0, "Buffer is set to '%s'\n", buffer);
 453     ok(size == 8, "size is set to %d\n", size); /* 8 bytes in 'Desktop\0' */
 454
 455     /* Get size, test size and return value/error code (Unicode) */
 456     size = 0xdeadbeef;
 457     SetLastError(0xdeadbeef);
 458     ret = GetUserObjectInformationW(desk, UOI_TYPE, NULL, 0, &size);
 459
 460     ok(!ret, "GetUserObjectInformationW returned %x\n", ret);
 461     ok(GetLastError() == ERROR_INSUFFICIENT_BUFFER, "LastError is set to %08x\n", GetLastError());
 462     ok(size == 16, "size is set to %d\n", size);  /* 16 bytes in 'Desktop\0' in Unicode */
 463
 464     /* Get string (Unicode) */
 465     SetLastError(0xdeadbeef);
 466     size = 0xdeadbeef;
 467     ret = GetUserObjectInformationW(desk, UOI_TYPE, bufferW, sizeof(bufferW), &size);
 468
 469     ok(ret, "GetUserObjectInformationW returned %x\n", ret);
 470     ok(GetLastError() == 0xdeadbeef, "LastError is set to %08x\n", GetLastError());
 471
 472     ok(lstrcmpW(bufferW, DesktopW) == 0, "Buffer is not set to 'Desktop'\n");
 473     ok(size == 16, "size is set to %d\n", size);  /* 16 bytes in 'Desktop\0' in Unicode */
 474
 475     ok(CloseDesktop(desk), "CloseDesktop failed\n");
 476 }
 477
 478 START_TEST(winstation)
 479 {
 480     /* Check whether this platform supports WindowStation calls */
 481
 482     SetLastError( 0xdeadbeef );
 483     GetProcessWindowStation();
 484     if (GetLastError() == ERROR_CALL_NOT_IMPLEMENTED)
 485     {
 486         skip("WindowStation calls not supported on this platform\n");
 487         return;
 488     }
 489
 490     test_enumstations();
 491     test_enumdesktops();
 492     test_handles();
 493     test_getuserobjectinformation();
 494 }