- do the clean-up in close()

- ensure deleted elements aren't accessed


git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@254 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/engine.h

@@ -103,6 +103,8 @@ public:
 		return( m_automationEditor );
 	}
 
+	void close( void );
+
 
 private:
 	bool m_hasGUI;

src/core/engine.cpp

@@ -67,14 +67,26 @@ engine::engine( const bool _has_gui ) :
 
 
 engine::~engine()
+{
+}
+
+
+
+
+void engine::close( void )
 {
 	m_mixer->stopProcessing();
 
 	delete m_projectNotes;
+	m_projectNotes = NULL;
 	delete m_songEditor;
+	m_songEditor = NULL;
 	delete m_bbEditor;
+	m_bbEditor = NULL;
 	delete m_pianoRoll;
+	m_pianoRoll = NULL;
 	delete m_automationEditor;
+	m_automationEditor = NULL;
 
 	presetPreviewPlayHandle::cleanUp( this );
 
@@ -83,8 +95,11 @@ engine::~engine()
 
 
 	delete m_mixer;
+	m_mixer = NULL;
 	//delete configManager::inst();
-	
+	delete m_projectJournal;
+	m_projectJournal = NULL;
+	m_mainWindow = NULL;
 }