refactored midiPortMenu-creation and -management - fixes crash when removing track which had MIDI-in enabled and enabled MIDI-in for another track afterwards

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1149 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/instrument_midi_io_view.h

@@ -36,14 +36,13 @@ class tabWidget;
 class ledCheckBox;
 class lcdSpinBox;
 class midiPortMenu;
+class QToolButton;
 
 
 class instrumentMidiIOView : public QWidget, public modelView
 {
 public:
-	instrumentMidiIOView( midiPortMenu * _readable_ports_menu,
-				midiPortMenu * _writable_ports_menu,
-							QWidget * _parent );
+	instrumentMidiIOView( QWidget * _parent );
 	virtual ~instrumentMidiIOView();
 
 
@@ -57,6 +56,8 @@ private:
 	ledCheckBox * m_sendCheckBox;
 	ledCheckBox * m_defaultVelocityInCheckBox;
 	ledCheckBox * m_defaultVelocityOutCheckBox;
+	QToolButton * m_rpBtn;
+	QToolButton * m_wpBtn;
 
 } ;
 

include/instrument_track.h

@@ -249,8 +249,6 @@ private:
 	instrumentTrackButton * m_tswInstrumentTrackButton;
 
 	QMenu * m_tswMidiMenu;
-	midiPortMenu * m_readablePortsMenu;
-	midiPortMenu * m_writablePortsMenu;
 
 	QAction * m_midiInputAction;
 	QAction * m_midiOutputAction;

include/midi_port.h

@@ -37,6 +37,7 @@
 
 class midiClient;
 class midiEventProcessor;
+class midiPortMenu;
 class midiTime;
 
 
@@ -125,6 +126,9 @@ public:
 		return( m_writablePorts );
 	}
 
+	midiPortMenu * m_readablePortsMenu;
+	midiPortMenu * m_writablePortsMenu;
+
 
 signals:
 	void readablePortsChanged( void );