From ccda1ead6e80d3d39865fbfac4c8c430e6abaa0b Mon Sep 17 00:00:00 2001
From: Rene Brun <Rene.Brun@cern.ch>
Date: Sun, 20 Apr 2003 21:26:45 +0000
Subject: [PATCH] In TTreePlayer::DrawSelect, do not draw the generated
histogram if the number of selected rows is null and option "same" is not
specified. Instead clear the current pad.
git-svn-id: http://root.cern.ch/svn/root/trunk@6473 27541ba8-7e3a-0410-8455-c3a389f83636
---
treeplayer/src/TTreePlayer.cxx | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/treeplayer/src/TTreePlayer.cxx b/treeplayer/src/TTreePlayer.cxx
index 5a78cae6d42..50346061c17 100644
--- a/treeplayer/src/TTreePlayer.cxx
+++ b/treeplayer/src/TTreePlayer.cxx
@@ -1,4 +1,4 @@
-// @(#)root/treeplayer:$Name: $:$Id: TTreePlayer.cxx,v 1.123 2003/04/09 08:48:09 brun Exp $
+// @(#)root/treeplayer:$Name: $:$Id: TTreePlayer.cxx,v 1.124 2003/04/09 16:30:19 brun Exp $
// Author: Rene Brun 12/01/96
/*************************************************************************
@@ -717,7 +717,12 @@ Int_t TTreePlayer::DrawSelect(const char *varexp0, const char *selection, Option
Bool_t draw = kFALSE;
if (!drawflag && !opt.Contains("goff")) draw = kTRUE;
fHistogram = (TH1*)fSelector->GetObject();
-
+
+ if (!nrows && drawflag && !opt.Contains("same")) {
+ gPad->Clear();
+ return 0;
+ }
+
//*-*- 1-D distribution
if (fDimension == 1) {
if (fSelector->GetVar1()->IsInteger()) fHistogram->LabelsDeflate("X");
--
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