propsys: Handle VT_I4 type in VariantToString().

dlls/propsys/propvar.c

@@ -436,7 +436,7 @@ PCWSTR WINAPI VariantToStringWithDefault(const VARIANT *pvar, const WCHAR *defau
  */
 HRESULT WINAPI VariantToString(REFVARIANT var, PWSTR ret, UINT cch)
 {
-    WCHAR *str = NULL;
+    WCHAR buffer[64], *str = buffer;
 
     TRACE("%p, %p, %u.\n", var, ret, cch);
 
@@ -445,15 +445,17 @@ HRESULT WINAPI VariantToString(REFVARIANT var, PWSTR ret, UINT cch)
     if (!cch)
         return E_INVALIDARG;
 
-    if (V_VT(var) == VT_BSTR)
+    switch (V_VT(var))
     {
-        str = V_BSTR(var);
-    }
-    else
-    {
-        FIXME("Unsupported type %d.\n", V_VT(var));
-
-        return E_NOTIMPL;
+        case VT_BSTR:
+            str = V_BSTR(var);
+            break;
+        case VT_I4:
+            swprintf(buffer, ARRAY_SIZE(buffer), L"%d", V_I4(var));
+            break;
+        default:
+            FIXME("Unsupported type %d.\n", V_VT(var));
+            return E_NOTIMPL;
     }
 
     if (wcslen(str) > cch - 1)

dlls/propsys/tests/propsys.c

@@ -2290,6 +2290,13 @@ static void test_VariantToString(void)
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
     ok(!buff[0], "Unexpected buffer.\n");
 
+    buff[0] = 0;
+    V_VT(&v) = VT_I4;
+    V_I4(&v) = 567;
+    hr = VariantToString(&v, buff, 64);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(!wcscmp(buff, L"567"), "Unexpected buffer %s.\n", wine_dbgstr_w(buff));
+
     V_VT(&v) = VT_BSTR;
     V_BSTR(&v) = SysAllocString(L"test1");