diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index d794ca85e..d2e921223 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -3841,6 +3841,10 @@
   <define name="wxPG_ITERATOR_PARENTEXMASK_TEST(PWC,PARENTMASK)" value="( !PWC-&gt;HasFlag(PARENTMASK) &amp;&amp; PWC-&gt;GetChildCount() )"/>
   <define name="wxPG_IT_CHILDREN(A)" value="((A)&lt;&lt;16)"/>
   <define name="wxPG_XBEFORETEXT" value="4"/>
+  <define name="wxPG_SPLITTER_REFRESH" value="0x0001"/>
+  <define name="wxPG_SPLITTER_ALL_PAGES" value="0x0002"/>
+  <define name="wxPG_SPLITTER_FROM_EVENT" value="0x0004"/>
+  <define name="wxPG_SPLITTER_FROM_AUTO_CENTER" value="0x0008"/>
   <define name="wxPG_FL_INITIALIZED" value="0x0001"/>
   <define name="wxPG_FL_ACTIVATION_BY_CLICK" value="0x0002"/>
   <define name="wxPG_FL_DONT_CENTER_SPLITTER" value="0x0004"/>