dlls/gdi32/tests/clipping.c

   1 /*
   2  * Unit test suite for clipping
   3  *
   4  * Copyright 2005 Huw Davies
   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
  26 static void test_GetRandomRgn(void)
  27 {
  28     HWND hwnd = CreateWindowExA(0,"BUTTON","test",WS_VISIBLE|WS_POPUP,0,0,100,100,GetDesktopWindow(),0,0,0);
  29     HDC hdc;
  30     HRGN hrgn = CreateRectRgn(0, 0, 0, 0);
  31     int ret;
  32     RECT rc, rc2;
  33     RECT ret_rc, window_rc;
  34
  35     ok( hwnd != 0, "CreateWindow failed\n" );
  36
  37     SetRect(&window_rc, 400, 300, 500, 400);
  38     SetWindowPos(hwnd, HWND_TOPMOST, window_rc.left, window_rc.top,
  39                  window_rc.right - window_rc.left, window_rc.bottom - window_rc.top, 0 );
  40     hdc = GetDC(hwnd);
  41
  42     ret = GetRandomRgn(hdc, hrgn, 1);
  43     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  44     ret = GetRandomRgn(hdc, hrgn, 2);
  45     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  46     ret = GetRandomRgn(hdc, hrgn, 3);
  47     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  48
  49     /* Set a clip region */
  50     SetRect(&rc, 20, 20, 80, 80);
  51     IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
  52
  53     ret = GetRandomRgn(hdc, hrgn, 1);
  54     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  55     GetRgnBox(hrgn, &ret_rc);
  56     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  57        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  58
  59     ret = GetRandomRgn(hdc, hrgn, 2);
  60     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  61
  62     ret = GetRandomRgn(hdc, hrgn, 3);
  63     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  64     GetRgnBox(hrgn, &ret_rc);
  65     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  66        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  67
  68     /* Move the clip to the meta and clear the clip */
  69     SetMetaRgn(hdc);
  70
  71     ret = GetRandomRgn(hdc, hrgn, 1);
  72     ok(ret == 0, "GetRandomRgn rets %d\n", ret);
  73     ret = GetRandomRgn(hdc, hrgn, 2);
  74     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  75     GetRgnBox(hrgn, &ret_rc);
  76     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  77        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  78
  79     ret = GetRandomRgn(hdc, hrgn, 3);
  80     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  81     GetRgnBox(hrgn, &ret_rc);
  82     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  83        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  84
  85     /* Set a new clip (still got the meta) */
  86     SetRect(&rc2, 10, 30, 70, 90);
  87     IntersectClipRect(hdc, rc2.left, rc2.top, rc2.right, rc2.bottom);
  88
  89     ret = GetRandomRgn(hdc, hrgn, 1);
  90     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  91     GetRgnBox(hrgn, &ret_rc);
  92     ok(EqualRect(&rc2, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  93        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
  94
  95     ret = GetRandomRgn(hdc, hrgn, 2);
  96     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
  97     GetRgnBox(hrgn, &ret_rc);
  98     ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
  99        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
 100
 101     IntersectRect(&rc2, &rc, &rc2);
 102
 103     ret = GetRandomRgn(hdc, hrgn, 3);
 104     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
 105     GetRgnBox(hrgn, &ret_rc);
 106     ok(EqualRect(&rc2, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
 107        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
 108
 109
 110     ret = GetRandomRgn(hdc, hrgn, SYSRGN);
 111     ok(ret != 0, "GetRandomRgn rets %d\n", ret);
 112     GetRgnBox(hrgn, &ret_rc);
 113     if(GetVersion() & 0x80000000)
 114         OffsetRect(&window_rc, -window_rc.left, -window_rc.top);
 115     /* the window may be partially obscured so the region may be smaller */
 116     IntersectRect( &window_rc, &ret_rc, &ret_rc );
 117     ok(EqualRect(&window_rc, &ret_rc) ||
 118        broken(IsRectEmpty(&ret_rc)), /* win95 */
 119        "GetRandomRgn %d,%d - %d,%d\n",
 120        ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
 121
 122     DeleteObject(hrgn);
 123     ReleaseDC(hwnd, hdc);
 124     DestroyWindow(hwnd);
 125 }
 126
 127 static void verify_region(HRGN hrgn, const RECT *rc)
 128 {
 129     union
 130     {
 131         RGNDATA data;
 132         char buf[sizeof(RGNDATAHEADER) + sizeof(RECT)];
 133     } rgn;
 134     const RECT *rect;
 135     DWORD ret;
 136
 137     ret = GetRegionData(hrgn, 0, NULL);
 138     if (IsRectEmpty(rc))
 139         ok(ret == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", ret);
 140     else
 141         ok(ret == sizeof(rgn.data.rdh) + sizeof(RECT), "expected sizeof(rgn), got %u\n", ret);
 142
 143     if (!ret) return;
 144
 145     ret = GetRegionData(hrgn, sizeof(rgn), &rgn.data);
 146     if (IsRectEmpty(rc))
 147         ok(ret == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", ret);
 148     else
 149         ok(ret == sizeof(rgn.data.rdh) + sizeof(RECT), "expected sizeof(rgn), got %u\n", ret);
 150
 151     trace("size %u, type %u, count %u, rgn size %u, bound (%d,%d-%d,%d)\n",
 152           rgn.data.rdh.dwSize, rgn.data.rdh.iType,
 153           rgn.data.rdh.nCount, rgn.data.rdh.nRgnSize,
 154           rgn.data.rdh.rcBound.left, rgn.data.rdh.rcBound.top,
 155           rgn.data.rdh.rcBound.right, rgn.data.rdh.rcBound.bottom);
 156     if (rgn.data.rdh.nCount != 0)
 157     {
 158         rect = (const RECT *)rgn.data.Buffer;
 159         trace("rect (%d,%d-%d,%d)\n", rect->left, rect->top, rect->right, rect->bottom);
 160         ok(EqualRect(rect, rc), "rects don't match\n");
 161     }
 162
 163     ok(rgn.data.rdh.dwSize == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", rgn.data.rdh.dwSize);
 164     ok(rgn.data.rdh.iType == RDH_RECTANGLES, "expected RDH_RECTANGLES, got %u\n", rgn.data.rdh.iType);
 165     if (IsRectEmpty(rc))
 166     {
 167         ok(rgn.data.rdh.nCount == 0, "expected 0, got %u\n", rgn.data.rdh.nCount);
 168         ok(rgn.data.rdh.nRgnSize == 0 ||
 169            broken(rgn.data.rdh.nRgnSize == 168), /* NT4 */
 170            "expected 0, got %u\n", rgn.data.rdh.nRgnSize);
 171     }
 172     else
 173     {
 174         ok(rgn.data.rdh.nCount == 1, "expected 1, got %u\n", rgn.data.rdh.nCount);
 175         ok(rgn.data.rdh.nRgnSize == sizeof(RECT) ||
 176            broken(rgn.data.rdh.nRgnSize == 168), /* NT4 */
 177            "expected sizeof(RECT), got %u\n", rgn.data.rdh.nRgnSize);
 178     }
 179     ok(EqualRect(&rgn.data.rdh.rcBound, rc), "rects don't match\n");
 180 }
 181
 182 static void test_ExtCreateRegion(void)
 183 {
 184     static const RECT empty_rect;
 185     static const RECT rc = { 111, 222, 333, 444 };
 186     static const RECT rc_xformed = { 76, 151, 187, 262 };
 187     union
 188     {
 189         RGNDATA data;
 190         char buf[sizeof(RGNDATAHEADER) + sizeof(RECT)];
 191     } rgn;
 192     HRGN hrgn;
 193     XFORM xform;
 194
 195     if (0) /* crashes under Win9x */
 196     {
 197         SetLastError(0xdeadbeef);
 198         hrgn = ExtCreateRegion(NULL, 0, NULL);
 199         ok(!hrgn, "ExtCreateRegion should fail\n");
 200         ok(GetLastError() == ERROR_INVALID_PARAMETER, "ERROR_INVALID_PARAMETER, got %u\n", GetLastError());
 201     }
 202
 203     rgn.data.rdh.dwSize = 0;
 204     rgn.data.rdh.iType = 0;
 205     rgn.data.rdh.nCount = 0;
 206     rgn.data.rdh.nRgnSize = 0;
 207     SetRectEmpty(&rgn.data.rdh.rcBound);
 208     memcpy(rgn.data.Buffer, &rc, sizeof(rc));
 209
 210     SetLastError(0xdeadbeef);
 211     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 212     ok(!hrgn, "ExtCreateRegion should fail\n");
 213     ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %u\n", GetLastError());
 214
 215     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) - 1;
 216
 217     SetLastError(0xdeadbeef);
 218     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 219     ok(!hrgn, "ExtCreateRegion should fail\n");
 220     ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %u\n", GetLastError());
 221
 222     /* although XP doesn't care about the type Win9x does */
 223     rgn.data.rdh.iType = RDH_RECTANGLES;
 224     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
 225
 226     SetLastError(0xdeadbeef);
 227     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 228     ok(hrgn != 0, "ExtCreateRegion error %u\n", GetLastError());
 229     verify_region(hrgn, &empty_rect);
 230     DeleteObject(hrgn);
 231
 232     rgn.data.rdh.nCount = 1;
 233     SetRectEmpty(&rgn.data.rdh.rcBound);
 234     memcpy(rgn.data.Buffer, &rc, sizeof(rc));
 235
 236     SetLastError(0xdeadbeef);
 237     hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
 238     ok(hrgn != 0, "ExtCreateRegion error %u\n", GetLastError());
 239     verify_region(hrgn, &rc);
 240     DeleteObject(hrgn);
 241
 242     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) + 1;
 243
 244     SetLastError(0xdeadbeef);
 245     hrgn = ExtCreateRegion(NULL, 1, &rgn.data);
 246     ok(hrgn != 0 ||
 247        broken(GetLastError() == 0xdeadbeef), /* NT4 */
 248        "ExtCreateRegion error %u\n", GetLastError());
 249     if(hrgn)
 250     {
 251         verify_region(hrgn, &rc);
 252         DeleteObject(hrgn);
 253     }
 254
 255     xform.eM11 = 0.5; /* 50% width */
 256     xform.eM12 = 0.0;
 257     xform.eM21 = 0.0;
 258     xform.eM22 = 0.5; /* 50% height */
 259     xform.eDx = 20.0;
 260     xform.eDy = 40.0;
 261
 262     rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
 263
 264     SetLastError(0xdeadbeef);
 265     hrgn = ExtCreateRegion(&xform, sizeof(rgn), &rgn.data);
 266     ok(hrgn != 0, "ExtCreateRegion error %u/%x\n", GetLastError(), GetLastError());
 267     verify_region(hrgn, &rc_xformed);
 268     DeleteObject(hrgn);
 269 }
 270
 271 static void test_GetClipRgn(void)
 272 {
 273     HDC hdc;
 274     HRGN hrgn, hrgn2, hrgn3, hrgn4;
 275     int ret;
 276
 277     /* Test calling GetClipRgn with NULL device context and region handles. */
 278     ret = GetClipRgn(NULL, NULL);
 279     ok(ret == -1, "Expected GetClipRgn to return -1, got %d\n", ret);
 280
 281     hdc = GetDC(NULL);
 282     ok(hdc != NULL, "Expected GetDC to return a valid device context handle\n");
 283
 284     /* Test calling GetClipRgn with a valid device context and NULL region. */
 285     ret = GetClipRgn(hdc, NULL);
 286     ok(ret == 0 ||
 287        ret == -1 /* Win9x */,
 288        "Expected GetClipRgn to return 0, got %d\n", ret);
 289
 290     /* Initialize the test regions. */
 291     hrgn = CreateRectRgn(100, 100, 100, 100);
 292     ok(hrgn != NULL,
 293        "Expected CreateRectRgn to return a handle to a new rectangular region\n");
 294
 295     hrgn2 = CreateRectRgn(1, 2, 3, 4);
 296     ok(hrgn2 != NULL,
 297        "Expected CreateRectRgn to return a handle to a new rectangular region\n");
 298
 299     hrgn3 = CreateRectRgn(1, 2, 3, 4);
 300     ok(hrgn3 != NULL,
 301        "Expected CreateRectRgn to return a handle to a new rectangular region\n");
 302
 303     hrgn4 = CreateRectRgn(1, 2, 3, 4);
 304     ok(hrgn4 != NULL,
 305        "Expected CreateRectRgn to return a handle to a new rectangular region\n");
 306
 307     /* Try getting a clipping region from the device context
 308      * when the device context's clipping region isn't set. */
 309     ret = GetClipRgn(hdc, hrgn2);
 310     ok(ret == 0, "Expected GetClipRgn to return 0, got %d\n", ret);
 311
 312     /* The region passed to GetClipRgn should be unchanged. */
 313     ret = EqualRgn(hrgn2, hrgn3);
 314     ok(ret == 1,
 315        "Expected EqualRgn to compare the two regions as equal, got %d\n", ret);
 316
 317     /* Try setting and getting back a clipping region. */
 318     ret = SelectClipRgn(hdc, hrgn);
 319     ok(ret == NULLREGION,
 320        "Expected SelectClipRgn to return NULLREGION, got %d\n", ret);
 321
 322     /* Passing a NULL region handle when the device context
 323      * has a clipping region results in an error. */
 324     ret = GetClipRgn(hdc, NULL);
 325     ok(ret == -1, "Expected GetClipRgn to return -1, got %d\n", ret);
 326
 327     ret = GetClipRgn(hdc, hrgn2);
 328     ok(ret == 1, "Expected GetClipRgn to return 1, got %d\n", ret);
 329
 330     ret = EqualRgn(hrgn, hrgn2);
 331     ok(ret == 1,
 332        "Expected EqualRgn to compare the two regions as equal, got %d\n", ret);
 333
 334     /* Try unsetting and then query the clipping region. */
 335     ret = SelectClipRgn(hdc, NULL);
 336     ok(ret == SIMPLEREGION || (ret == COMPLEXREGION && GetSystemMetrics(SM_CMONITORS) > 1),
 337        "Expected SelectClipRgn to return SIMPLEREGION, got %d\n", ret);
 338
 339     ret = GetClipRgn(hdc, NULL);
 340     ok(ret == 0 ||
 341        ret == -1 /* Win9x */,
 342        "Expected GetClipRgn to return 0, got %d\n", ret);
 343
 344     ret = GetClipRgn(hdc, hrgn3);
 345     ok(ret == 0, "Expected GetClipRgn to return 0, got %d\n", ret);
 346
 347     ret = EqualRgn(hrgn3, hrgn4);
 348     ok(ret == 1,
 349        "Expected EqualRgn to compare the two regions as equal, got %d\n", ret);
 350
 351     DeleteObject(hrgn4);
 352     DeleteObject(hrgn3);
 353     DeleteObject(hrgn2);
 354     DeleteObject(hrgn);
 355     ReleaseDC(NULL, hdc);
 356 }
 357
 358 static void test_memory_dc_clipping(void)
 359 {
 360     HDC hdc;
 361     HRGN hrgn, hrgn_empty;
 362     HBITMAP hbmp;
 363     RECT rc;
 364     int ret;
 365
 366     hdc = CreateCompatibleDC(0);
 367     hrgn_empty = CreateRectRgn(0, 0, 0, 0);
 368     hrgn = CreateRectRgn(0, 0, 0, 0);
 369     hbmp = CreateCompatibleBitmap(hdc, 100, 100);
 370
 371     ret = GetClipRgn(hdc, hrgn);
 372     ok(ret == 0, "expected 0, got %d\n", ret);
 373
 374     ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
 375     ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
 376
 377     ret = GetClipRgn(hdc, hrgn);
 378     ok(ret == 1, "expected 1, got %d\n", ret);
 379
 380     ret = GetRgnBox(hrgn, &rc);
 381     ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
 382     ok(rc.left == 0 && rc.top == 0 && rc.right == 1 && rc.bottom == 1,
 383        "expected 0,0-1,1, got %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom);
 384
 385     ret = ExtSelectClipRgn(hdc, 0, RGN_COPY);
 386     ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
 387
 388     ret = GetClipRgn(hdc, hrgn);
 389     ok(ret == 0, "expected 0, got %d\n", ret);
 390
 391     SelectObject(hdc, hbmp);
 392
 393     ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
 394     ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
 395
 396     ret = GetClipRgn(hdc, hrgn);
 397     ok(ret == 1, "expected 1, got %d\n", ret);
 398
 399     ret = GetRgnBox(hrgn, &rc);
 400     ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
 401     ok(rc.left == 0 && rc.top == 0 && rc.right == 100 && rc.bottom == 100,
 402        "expected 0,0-100,100, got %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom);
 403
 404     SetRect( &rc, 10, 10, 20, 20 );
 405     ret = RectVisible( hdc, &rc );
 406     ok( ret, "RectVisible failed for %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom );
 407
 408     SetRect( &rc, 20, 20, 10, 10 );
 409     ret = RectVisible( hdc, &rc );
 410     ok( ret, "RectVisible failed for %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom );
 411
 412     DeleteDC(hdc);
 413     DeleteObject(hrgn);
 414     DeleteObject(hrgn_empty);
 415     DeleteObject(hbmp);
 416 }
 417
 418 static void test_window_dc_clipping(void)
 419 {
 420     HDC hdc;
 421     HRGN hrgn, hrgn_empty;
 422     HWND hwnd;
 423     RECT rc;
 424     int ret, screen_width, screen_height;
 425
 426     /* Windows versions earlier than Win2k do not support the virtual screen metrics,
 427      * so we fall back to the primary screen metrics. */
 428     screen_width = GetSystemMetrics(SM_CXVIRTUALSCREEN);
 429     if(!screen_width) screen_width = GetSystemMetrics(SM_CXSCREEN);
 430     screen_height = GetSystemMetrics(SM_CYVIRTUALSCREEN);
 431     if(!screen_height) screen_height = GetSystemMetrics(SM_CYSCREEN);
 432
 433     trace("screen resolution %d x %d\n", screen_width, screen_height);
 434
 435     hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP,
 436                            -100, -100, screen_width * 2, screen_height * 2, 0, 0, 0, NULL);
 437     hdc = GetWindowDC(0);
 438     hrgn_empty = CreateRectRgn(0, 0, 0, 0);
 439     hrgn = CreateRectRgn(0, 0, 0, 0);
 440
 441     ret = GetClipRgn(hdc, hrgn);
 442     ok(ret == 0, "expected 0, got %d\n", ret);
 443
 444     ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
 445     ok(ret == SIMPLEREGION || (ret == COMPLEXREGION && GetSystemMetrics(SM_CMONITORS) > 1),
 446        "expected SIMPLEREGION, got %d\n", ret);
 447
 448     ret = GetClipRgn(hdc, hrgn);
 449     ok(ret == 1, "expected 1, got %d\n", ret);
 450
 451     ret = GetRgnBox(hrgn, &rc);
 452     ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
 453     ok(rc.left == 0 && rc.top == 0 && rc.right == screen_width && rc.bottom == screen_height,
 454        "expected 0,0-%d,%d, got %d,%d-%d,%d\n", screen_width, screen_height,
 455         rc.left, rc.top, rc.right, rc.bottom);
 456
 457     SetRect( &rc, 10, 10, 20, 20 );
 458     ret = RectVisible( hdc, &rc );
 459     ok( ret, "RectVisible failed for %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom );
 460
 461     SetRect( &rc, 20, 20, 10, 10 );
 462     ret = RectVisible( hdc, &rc );
 463     ok( ret, "RectVisible failed for %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom );
 464
 465     ret = ExtSelectClipRgn(hdc, 0, RGN_COPY);
 466     ok(ret == SIMPLEREGION || (ret == COMPLEXREGION && GetSystemMetrics(SM_CMONITORS) > 1),
 467        "expected SIMPLEREGION, got %d\n", ret);
 468
 469     ret = GetClipRgn(hdc, hrgn);
 470     ok(ret == 0, "expected 0, got %d\n", ret);
 471
 472     DeleteDC(hdc);
 473     DeleteObject(hrgn);
 474     DeleteObject(hrgn_empty);
 475     DestroyWindow(hwnd);
 476 }
 477
 478
 479 START_TEST(clipping)
 480 {
 481     test_GetRandomRgn();
 482     test_ExtCreateRegion();
 483     test_GetClipRgn();
 484     test_memory_dc_clipping();
 485     test_window_dc_clipping();
 486 }