Minor GUI improvement

1 files changed, 7 insertions, 5 deletions

diff --git a/solo-tool-project/src/solo_tool/midi_wrapper_mido.py b/solo-tool-project/src/solo_tool/midi_wrapper_mido.py
index 4cfc9c3..34f1031 100644
--- a/solo-tool-project/src/solo_tool/midi_wrapper_mido.py
+++ b/solo-tool-project/src/solo_tool/midi_wrapper_mido.py
@@ -12,12 +12,14 @@ class MidiWrapper:
             self._outPort = mido.open_output(deviceName)
 
     def disconnect(self):
-        self._inPort.close()
-        self._inPort = None
+        if self._inPort is not None:
+            self._inPort.close()
+            self._inPort = None
 
-        self._outPort.reset()
-        self._outPort.close()
-        self._outPort = None
+        if self._outPort is not None:
+            self._outPort.reset()
+            self._outPort.close()
+            self._outPort = None
 
     def sendMessage(self, note, velocity, channel):
         if self._outPort is not None: