diff --git a/cfg/wxwidgets.cfg b/cfg/wxwidgets.cfg
index eb8933674..4960dd491 100644
--- a/cfg/wxwidgets.cfg
+++ b/cfg/wxwidgets.cfg
@@ -8902,4 +8902,30 @@
     <arg nr="1" direction="in"/>
     <arg nr="2" direction="in"/>
   </function>
+  <!-- void wxPropertyGridManager::SetSplitterPosition( int pos, int column = 0 ) -->
+  <!-- void wxPropertyGridPage::SetSplitterPosition( int pos, int column = 0 ) -->
+  <function name="wxPropertyGridManager::SetSplitterPosition,wxPropertyGridPage::SetSplitterPosition">
+    <noreturn>false</noreturn>
+    <returnValue type="void"/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+    </arg>
+    <arg nr="2" default="0" direction="in">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- bool wxPropertyGridInterface::SetColumnProportion( unsigned int column, int proportion ) -->
+  <!-- bool wxPropertyGridPage::SetColumnProportion( unsigned int column, int proportion ) -->
+  <function name="wxPropertyGridInterface::SetColumnProportion,wxPropertyGridPage::SetColumnProportion">
+    <noreturn>false</noreturn>
+    <returnValue type="bool"/>
+    <leak-ignore/>
+    <arg nr="1" direction="in">
+      <not-uninit/>
+    </arg>
+    <arg nr="2" direction="in">
+      <not-uninit/>
+    </arg>
+  </function>
 </def>