From af851100774c4ff33b515c884abe0cd03c3f0528 Mon Sep 17 00:00:00 2001
From: mpv <mpv@opencascade.com>
Date: Thu, 16 Apr 2015 13:10:01 +0300
Subject: [PATCH] Fix for crash on multi-selection of group-vertices on
 imported body with Shift-key-pressed

---
 src/ModuleBase/ModuleBase_WidgetValidated.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/ModuleBase/ModuleBase_WidgetValidated.cpp b/src/ModuleBase/ModuleBase_WidgetValidated.cpp
index 4db4e4bbc..caadc6be7 100644
--- a/src/ModuleBase/ModuleBase_WidgetValidated.cpp
+++ b/src/ModuleBase/ModuleBase_WidgetValidated.cpp
@@ -8,6 +8,7 @@
 #include <ModelAPI_Session.h>
 #include <ModelAPI_Validator.h>
 #include <ModelAPI_AttributeValidator.h>
+#include <ModelAPI_Events.h>
 
 #include <SelectMgr_ListIteratorOfListOfFilter.hxx>
 #include <SelectMgr_EntityOwner.hxx>
@@ -69,6 +70,16 @@ bool ModuleBase_WidgetValidated::isValidSelection(const ModuleBase_ViewerPrs& th
   anAttribute->blockSetInitialized(isAttributeBlocked);
   aLoop->activateFlushes(true);
 
+  // In particular case the results are deleted and called as redisplayed inside of this
+  // highlight-selection, to they must be flushed as soon as possible.
+  // Example: selection of group-vertices subshapes with shift pressend on body. Without
+  //  these 4 lines below the application crashes because of left presentations on
+  //  removed results still in the viewer.
+  static Events_ID aDeletedEvent = Events_Loop::eventByName(EVENT_OBJECT_DELETED);
+  static Events_ID aRedispEvent = Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY);
+  aLoop->flush(aDeletedEvent);
+  aLoop->flush(aRedispEvent);
+
   return aValid;
 }
 
-- 
2.39.2