GetRandomRgn(...,1) returns the current clipping rgn.

include/wingdi.h

@@ -1479,6 +1479,9 @@ typedef struct tagEXTLOGPEN
 #define RGN_COPY          5
 #define RGN_MIN           RGN_AND
 #define RGN_MAX           RGN_COPY
+
+#define SYSRGN            4
+
   /* Device contexts */
 
   /* Polygon modes */

objects/clipping.c

@@ -497,3 +497,77 @@ INT16 WINAPI RestoreVisRgn16( HDC16 hdc16 )
     GDI_ReleaseObj( hdc );
     return ret;
 }
+
+
+/***********************************************************************
+ * GetRandomRgn [GDI32.@]
+ *
+ * NOTES
+ *     This function is documented in MSDN online for the case of
+ *     dwCode == SYSRGN (4).
+ *
+ *     For dwCode == 1 it should return the clip region
+ *                   2 "    "       "   the meta region
+ *                   3 "    "       "   the intersection of the clip with
+ *                                      the meta region (== 'Rao' region).
+ *
+ *     See http://www.codeproject.com/gdi/cliprgnguide.asp
+ */
+INT WINAPI GetRandomRgn(HDC hDC, HRGN hRgn, DWORD dwCode)
+{
+    switch (dwCode)
+    {
+    case SYSRGN: /* == 4 */
+	{
+	    DC *dc = DC_GetDCPtr (hDC);
+	    if (!dc) return -1;
+
+	    CombineRgn (hRgn, dc->hVisRgn, 0, RGN_COPY);
+            GDI_ReleaseObj( hDC );
+	    /*
+	     *     On Windows NT/2000,
+	     *           the region returned is in screen coordinates.
+	     *     On Windows 95/98,
+	     *           the region returned is in window coordinates
+	     */
+            if (!(GetVersion() & 0x80000000))
+            {
+                POINT org;
+                GetDCOrgEx(hDC, &org);
+                OffsetRgn(hRgn, org.x, org.y);
+            }
+	    return 1;
+	}
+
+    case 1: /* clip region */
+            return GetClipRgn (hDC, hRgn);
+
+    default:
+        WARN("Unknown dwCode %ld\n", dwCode);
+        return -1;
+    }
+
+    return -1;
+}
+
+
+/***********************************************************************
+ *           GetMetaRgn    (GDI32.@)
+ */
+INT WINAPI GetMetaRgn( HDC hdc, HRGN hRgn )
+{
+    FIXME( "stub\n" );
+
+    return 0;
+}
+
+
+/***********************************************************************
+ *           SetMetaRgn    (GDI32.@)
+ */
+INT WINAPI SetMetaRgn( HDC hdc )
+{
+    FIXME( "stub\n" );
+
+    return ERROR;
+}

objects/region.c

@@ -600,11 +600,12 @@ INT WINAPI GetRgnBox( HRGN hrgn, LPRECT rect )
     if (obj)
     {
 	INT ret;
-	TRACE(" %p\n", hrgn );
 	rect->left = obj->rgn->extents.left;
 	rect->top = obj->rgn->extents.top;
 	rect->right = obj->rgn->extents.right;
 	rect->bottom = obj->rgn->extents.bottom;
+	TRACE("%p (%ld,%ld-%ld,%ld)\n", hrgn,
+               rect->left, rect->top, rect->right, rect->bottom);
 	ret = get_region_type( obj );
 	GDI_ReleaseObj(hrgn);
 	return ret;
@@ -624,7 +625,7 @@ HRGN WINAPI CreateRectRgn(INT left, INT top, INT right, INT bottom)
 
     if (!(hrgn = REGION_CreateRegion(RGN_DEFAULT_RECTS)))
 	return 0;
-    TRACE("\n");
+    TRACE("%d,%d-%d,%d\n", left, top, right, bottom);
     SetRectRgn(hrgn, left, top, right, bottom);
     return hrgn;
 }
@@ -2706,70 +2707,3 @@ HRGN WINAPI CreatePolygonRgn( const POINT *points, INT count,
 {
     return CreatePolyPolygonRgn( points, &count, 1, mode );
 }
-
-
-/***********************************************************************
- * GetRandomRgn [GDI32.@]
- *
- * NOTES
- *     This function is documented in MSDN online
- */
-INT WINAPI GetRandomRgn(HDC hDC, HRGN hRgn, DWORD dwCode)
-{
-    switch (dwCode)
-    {
-        case 4: /* == SYSRGN ? */
-	{
-	    DC *dc = DC_GetDCPtr (hDC);
-	    OSVERSIONINFOA vi;
-	    POINT org;
-
-	    if (!dc) return -1;
-	    CombineRgn (hRgn, dc->hVisRgn, 0, RGN_COPY);
-	    /*
-	     *     On Windows NT/2000,
-	     *           the region returned is in screen coordinates.
-	     *     On Windows 95/98,
-	     *           the region returned is in window coordinates
-	     */
-	    vi.dwOSVersionInfoSize = sizeof(vi);
-	    if (GetVersionExA( &vi ) && vi.dwPlatformId == VER_PLATFORM_WIN32_NT)
-		GetDCOrgEx(hDC, &org);
-	    else
-		org.x = org.y = 0;
-	    OffsetRgn (hRgn, org.x, org.y);
-            GDI_ReleaseObj( hDC );
-	    return 1;
-	}
-/*	case 1:
-	    return GetClipRgn (hDC, hRgn);
-*/
-	default:
-	    WARN("Unknown dwCode %ld\n", dwCode);
-	    return -1;
-    }
-
-    return -1;
-}
-
-
-/***********************************************************************
- *           GetMetaRgn    (GDI32.@)
- */
-INT WINAPI GetMetaRgn( HDC hdc, HRGN hRgn )
-{
-  FIXME( "stub\n" );
-
-  return 0;
-}
-
-
-/***********************************************************************
- *           SetMetaRgn    (GDI32.@)
- */
-INT WINAPI SetMetaRgn( HDC hdc )
-{
-  FIXME( "stub\n" );
-
-  return ERROR;
-}