gdi32/tests: Take into account multi-monitor setups in the clip region tests.

dlls/gdi32/tests/clipping.c

@@ -333,7 +333,7 @@ static void test_GetClipRgn(void)
 
     /* Try unsetting and then query the clipping region. */
     ret = SelectClipRgn(hdc, NULL);
-    ok(ret == SIMPLEREGION,
+    ok(ret == SIMPLEREGION || (ret == COMPLEXREGION && GetSystemMetrics(SM_CMONITORS) > 1),
        "Expected SelectClipRgn to return SIMPLEREGION, got %d\n", ret);
 
     ret = GetClipRgn(hdc, NULL);
@@ -434,7 +434,8 @@ static void test_window_dc_clipping(void)
     ok(ret == 0, "expected 0, got %d\n", ret);
 
     ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
-    ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
+    ok(ret == SIMPLEREGION || (ret == COMPLEXREGION && GetSystemMetrics(SM_CMONITORS) > 1),
+       "expected SIMPLEREGION, got %d\n", ret);
 
     ret = GetClipRgn(hdc, hrgn);
     ok(ret == 1, "expected 1, got %d\n", ret);
@@ -446,7 +447,8 @@ static void test_window_dc_clipping(void)
         rc.left, rc.top, rc.right, rc.bottom);
 
     ret = ExtSelectClipRgn(hdc, 0, RGN_COPY);
-    ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
+    ok(ret == SIMPLEREGION || (ret == COMPLEXREGION && GetSystemMetrics(SM_CMONITORS) > 1),
+       "expected SIMPLEREGION, got %d\n", ret);
 
     ret = GetClipRgn(hdc, hrgn);
     ok(ret == 0, "expected 0, got %d\n", ret);