From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Thu, 9 Mar 2000 16:19:35 +0000 (+0000)
Subject: don't allow multiple root in the tree
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/0e93516996cf2bd0a6023b548c95fc32789fa4a7?ds=inline

don't allow multiple root in the tree


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6540 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/src/msw/treectrl.cpp b/src/msw/treectrl.cpp
index f231242b85..7f8403c58f 100644
--- a/src/msw/treectrl.cpp
+++ b/src/msw/treectrl.cpp
@@ -1198,6 +1198,10 @@ wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
                                       int image, int selectedImage,
                                       wxTreeItemData *data)
 {
+    wxCHECK_MSG( parent.IsOk() || !TreeView_GetRoot(GetHwnd()),
+                 wxTreeItemId(),
+                 _T("can't have more than one root in the tree") );
+
     TV_INSERTSTRUCT tvIns;
     tvIns.hParent = HITEM(parent);
     tvIns.hInsertAfter = HITEM(hInsertAfter);