gdiplus: Implement GdipGetRegionHRgn for rects.

dlls/gdiplus/region.c

@@ -823,6 +823,24 @@ static GpStatus get_region_hrgn(struct region_element *element, GpGraphics *grap
             return *hrgn ? Ok : OutOfMemory;
         case RegionDataPath:
             return get_path_hrgn(element->elementdata.pathdata.path, graphics, hrgn);
+        case RegionDataRect:
+        {
+            GpPath* path;
+            GpStatus stat;
+            GpRectF* rc = &element->elementdata.rect;
+
+            stat = GdipCreatePath(FillModeAlternate, &path);
+            if (stat != Ok)
+                return stat;
+            stat = GdipAddPathRectangle(path, rc->X, rc->Y, rc->Width, rc->Height);
+
+            if (stat == Ok)
+                stat = get_path_hrgn(path, graphics, hrgn);
+
+            GdipDeletePath(path);
+
+            return stat;
+        }
         default:
             FIXME("GdipGetRegionHRgn unimplemented for region type=%x\n", element->type);
             *hrgn = NULL;

dlls/gdiplus/tests/region.c

@@ -804,6 +804,7 @@ static void test_gethrgn(void)
     HDC hdc=GetDC(0);
     static const RECT empty_rect = {0,0,0,0};
     static const RECT test_rect = {10, 11, 20, 21};
+    static const GpRectF test_rectF = {10.0, 11.0, 10.0, 10.0};
     static const RECT scaled_rect = {20, 22, 40, 42};
 
     status = GdipCreateFromHDC(hdc, &graphics);
@@ -854,6 +855,18 @@ static void test_gethrgn(void)
     verify_region(hrgn, &scaled_rect);
     DeleteObject(hrgn);
 
+    status = GdipCombineRegionRect(region2, &test_rectF, CombineModeReplace);
+    ok(status == Ok, "status %08x\n", status);
+    status = GdipGetRegionHRgn(region2, NULL, &hrgn);
+    ok(status == Ok, "status %08x\n", status);
+    verify_region(hrgn, &test_rect);
+    DeleteObject(hrgn);
+
+    status = GdipGetRegionHRgn(region2, graphics, &hrgn);
+    ok(status == Ok, "status %08x\n", status);
+    verify_region(hrgn, &scaled_rect);
+    DeleteObject(hrgn);
+
     status = GdipDeletePath(path);
     ok(status == Ok, "status %08x\n", status);
     status = GdipDeleteRegion(region);