comctl32/dsa: Implement DSA_Clone().

dlls/comctl32/comctl32.spec

@@ -131,6 +131,7 @@
 @ stdcall DrawShadowText(long wstr long ptr long long long long long)
 @ stdcall DrawStatusText(long ptr ptr long) DrawStatusTextA
 @ stdcall DrawStatusTextW(long ptr wstr long)
+@ stdcall DSA_Clone(ptr)
 @ stdcall FlatSB_EnableScrollBar (long long long)
 @ stdcall FlatSB_GetScrollInfo (long long ptr)
 @ stdcall FlatSB_GetScrollPos (long long)

dlls/comctl32/dsa.c

@@ -434,3 +434,39 @@ void WINAPI DSA_DestroyCallback (HDSA hdsa, PFNDSAENUMCALLBACK enumProc,
     DSA_EnumCallback (hdsa, enumProc, lParam);
     DSA_Destroy (hdsa);
 }
+
+/**************************************************************************
+ * DSA_Clone [COMCTL32.@]
+ *
+ * Creates a copy of a dsa
+ *
+ * PARAMS
+ *     hdsa [I] handle to the dynamic storage array
+ *
+ * RETURNS
+ *     Cloned dsa
+ */
+HDSA WINAPI DSA_Clone(HDSA hdsa)
+{
+    HDSA dest;
+    INT i;
+
+    TRACE("(%p)\n", hdsa);
+
+    if (!hdsa)
+        return NULL;
+
+    dest = DSA_Create (hdsa->nItemSize, hdsa->nGrow);
+    if (!dest)
+        return NULL;
+
+    for (i = 0; i < hdsa->nItemCount; i++) {
+        void *ptr = DSA_GetItemPtr (hdsa, i);
+        if (DSA_InsertItem (dest, DA_LAST, ptr) == -1) {
+            DSA_Destroy (dest);
+            return NULL;
+        }
+    }
+
+    return dest;
+}