From fc3d8b9a101411bab9e392b9f07cbdea7b2edbda Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Fri, 24 Jun 2005 09:55:43 +0000
Subject: [PATCH] MPV: fix for bug IPAL9237 Make non-zero undo-limit to perform
 OCAF operation correctly (operations never opened if undolimit=0 => problems
 with Locked flag)

---
 src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx b/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx
index 6e0899ff8..d87b21ac4 100644
--- a/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx
+++ b/src/SALOMEDSImpl/SALOMEDSImpl_Study.cxx
@@ -41,6 +41,7 @@ IMPLEMENT_STANDARD_RTTIEXT( SALOMEDSImpl_Study, MMgt_TShared )
 SALOMEDSImpl_Study::SALOMEDSImpl_Study(const Handle(TDocStd_Document)& doc,
 				       const TCollection_AsciiString& study_name)
 {
+  doc->SetUndoLimit(1); // mpv (IPAL9237): if there is no undo limit, operations mechanism couldn't work
   _name = study_name;
   _doc = doc;
   _Saved = false ;
-- 
2.39.2