--- a/Src/wx-c/listctrl.cxx	2010-02-15 23:58:28.951428758 +0100
+++ b/Src/wx-c/listctrl.cxx	2010-02-15 23:59:55.188427966 +0100
@@ -180,9 +180,9 @@
 //-----------------------------------------------------------------------------
  
 extern "C" WXEXPORT
-bool wxListCtrl_SetItemData(wxListCtrl* self, int item, void* data)
+bool wxListCtrl_SetItemData(wxListCtrl* self, size_t item, void* data)
 {
-    return self->SetItemData(item, (int)data)?1:0;
+    return self->SetItemData(item, (size_t)data)?1:0;
 }
 
 //-----------------------------------------------------------------------------
@@ -687,7 +687,7 @@
 extern "C" WXEXPORT
 void wxListItem_SetData(wxListItem* self, void* data)
 {
-	self->SetData((int)data);
+	self->SetData((size_t)data);
 }
 
 //-----------------------------------------------------------------------------