From 1fe543fcd5a25fa6b2c9e0a1fdaaf25fa71cf614 Mon Sep 17 00:00:00 2001
From: Abdelrazak Younes <younes@lyx.org>
Date: Wed, 3 Oct 2007 07:12:28 +0000
Subject: [PATCH] Fix some crashes on exit and on windows switch.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@20680 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/frontends/LyXView.cpp         |  2 --
 src/frontends/WorkAreaManager.cpp |  3 ---
 src/frontends/qt4/GuiView.cpp     | 16 ++++++++++++----
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/frontends/LyXView.cpp b/src/frontends/LyXView.cpp
index 4b1f34d1f8..72f625de43 100644
--- a/src/frontends/LyXView.cpp
+++ b/src/frontends/LyXView.cpp
@@ -80,8 +80,6 @@ LyXView::LyXView(int id)
 
 LyXView::~LyXView()
 {
-	disconnectBuffer();
-	disconnectBufferView();
 	delete dialogs_;
 	delete autosave_timeout_;
 }
diff --git a/src/frontends/WorkAreaManager.cpp b/src/frontends/WorkAreaManager.cpp
index 7970bfaf26..4957f7bc3b 100644
--- a/src/frontends/WorkAreaManager.cpp
+++ b/src/frontends/WorkAreaManager.cpp
@@ -47,9 +47,6 @@ void WorkAreaManager::redrawAll()
 
 void WorkAreaManager::closeAll()
 {
-	if (quitting)
-		return;
-
 	while (!work_areas_.empty())
 		// WorkArea is de-registering itself.
 		(*work_areas_.begin())->close();
diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 372cad79b4..2ce2de6998 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -294,10 +294,10 @@ GuiViewBase::~GuiViewBase()
 void GuiViewBase::close()
 {
 	quitting_by_menu_ = true;
-	for (int i = 0; i != d.tab_widget_->count(); ++i) {
-		GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(i));
+	while (d.tab_widget_->count()) {
+		GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->widget(0));
 		BOOST_ASSERT(wa);
-		d.tab_widget_->removeTab(i);
+		d.tab_widget_->removeTab(0);
 		delete wa;
 	}
 	QMainWindow::close();
@@ -722,7 +722,6 @@ bool GuiViewBase::event(QEvent * e)
 	switch (e->type())
 	{
 	// Useful debug code:
-	//case QEvent::WindowActivate:
 	//case QEvent::ActivationChange:
 	//case QEvent::WindowDeactivate:
 	//case QEvent::Paint:
@@ -737,6 +736,15 @@ bool GuiViewBase::event(QEvent * e)
 	//case QEvent::Drop:
 	//	break;
 
+	case QEvent::WindowActivate: {
+		GuiWorkArea * wa = dynamic_cast<GuiWorkArea *>(d.tab_widget_->currentWidget());
+		BOOST_ASSERT(wa);
+		BufferView & bv = wa->bufferView();
+		connectBufferView(bv);
+		connectBuffer(bv.buffer());
+		return QMainWindow::event(e);
+	}
+
 	case QEvent::ShortcutOverride: {
 		QKeyEvent * ke = static_cast<QKeyEvent*>(e);
 		if (d.tab_widget_->count() == 0) {
-- 
2.39.2