X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5cb3a695e0f65d71fe0c315766e0d6dafd4c312a..192258889499e769f0359aa6c0b94732adb6b880:/src/msw/treectrl.cpp

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index 9464bec90b..9e8c7e31d1 100644
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -2137,6 +2137,8 @@ void wxTreeCtrl::ClearFocusedItem()
 
 void wxTreeCtrl::SetFocusedItem(const wxTreeItemId& item)
 {
+    wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
+
     TempSetter set(m_changingSelection);
 
     ::SetFocus(GetHwnd(), HITEM(item));