From e191844270de265df694cda989a5c1f236b1e366 Mon Sep 17 00:00:00 2001
From: nemu <nemu>
Date: Wed, 27 Oct 2010 19:00:47 +0000
Subject: [PATCH] potential fix of event handler crash in non-muSR fit

---
 src/classes/PMusrCanvas.cpp                  | 6 ++++++
 src/tests/eventHandler/PEventHandlerTest.cpp | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/src/classes/PMusrCanvas.cpp b/src/classes/PMusrCanvas.cpp
index be297072..89c1bb5c 100644
--- a/src/classes/PMusrCanvas.cpp
+++ b/src/classes/PMusrCanvas.cpp
@@ -3048,6 +3048,9 @@ void PMusrCanvas::PlotData(Bool_t unzoom)
       xmax = fXmax;
     }
 
+    // tell the canvas that the selected object (the one under the mouse pointer) is not your object, before to actually delete it.
+    fMainCanvas->SetSelected(fMainCanvas->GetPadSave());
+
     // cleanup if previous fMultiGraphData is present
     if (fMultiGraphData) {
       delete fMultiGraphData;
@@ -3275,6 +3278,9 @@ void PMusrCanvas::PlotDifference(Bool_t unzoom)
       xmax = fXmax;
     }
 
+    // tell the canvas that the selected object (the one under the mouse pointer) is not your object, before to actually delete it.
+    fMainCanvas->SetSelected(fMainCanvas->GetPadSave());
+
     // clean up previous fMultiGraphDiff
     if (fMultiGraphDiff) {
       delete fMultiGraphDiff;
diff --git a/src/tests/eventHandler/PEventHandlerTest.cpp b/src/tests/eventHandler/PEventHandlerTest.cpp
index 182f269c..b790fb8d 100644
--- a/src/tests/eventHandler/PEventHandlerTest.cpp
+++ b/src/tests/eventHandler/PEventHandlerTest.cpp
@@ -120,6 +120,9 @@ void PEventHandlerTest::SwitchGraph()
 {
   Double_t xmin, xmax;
 
+  // tell the canvas that the selected object (the one under the mouse pointer) is not your object, before to actually delete it.
+  fMainCanvas->SetSelected(fMainCanvas->GetPadSave());
+
   if (fSwitched) {
     xmin = fMultiGraph1->GetXaxis()->GetBinCenter(fMultiGraph1->GetXaxis()->GetFirst());
     xmax = fMultiGraph1->GetXaxis()->GetBinCenter(fMultiGraph1->GetXaxis()->GetLast());