From c0552edaf352d507812b8b171cb78eb5649a2f77 Mon Sep 17 00:00:00 2001
From: Keith Smith <ksmith@firebugit.com>
Date: Wed, 28 Jan 2026 17:31:45 -0700
Subject: [PATCH] Fix keyboard input recognition for special keys and
 cross-platform modifiers

- Add explicit handling for backspace, delete, escape, and space keys
- Fix modifier key mappings to work correctly on Linux/Windows (Ctrl key was incorrectly mapped to 'cmd')
- Add platform detection for proper modifier key handling across macOS, Linux, and Windows

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 MSMD_multiLevel.py | 34 ++++++++++++++++++++++++++--------
 1 file changed, 26 insertions(+), 8 deletions(-)

diff --git a/MSMD_multiLevel.py b/MSMD_multiLevel.py
index 79cecf9..956415b 100644
--- a/MSMD_multiLevel.py
+++ b/MSMD_multiLevel.py
@@ -108,7 +108,15 @@ class GraphicsView(QGraphicsView):
                 textFromCode = 'enter'
             elif code == 16777217:
                 textFromCode = 'tab'
-            else:     
+            elif code == 16777219:
+                textFromCode = 'backspace'
+            elif code == 16777223:
+                textFromCode = 'delete'
+            elif code == 16777216:
+                textFromCode = 'esc'
+            elif code == 32:
+                textFromCode = 'space'
+            else:
                 textFromCode = chr(code)
         except :
             textFromCode = text
@@ -130,10 +138,16 @@ class GraphicsView(QGraphicsView):
         if(pressedModifiers & Qt.AltModifier):
             modifierTextList.append('alt')
         if(pressedModifiers & Qt.ControlModifier):
-            modifierTextList.append('cmd') # on the mac this is the command key
+            if sys.platform == 'darwin':  # macOS
+                modifierTextList.append('cmd')  # on the mac this is the command key
+            else:  # Linux and Windows
+                modifierTextList.append('ctrl')
         if(pressedModifiers & Qt.MetaModifier):
-            modifierTextList.append('ctrl')# on the mac this is the control key
-        
+            if sys.platform == 'darwin':  # macOS
+                modifierTextList.append('ctrl')  # on the mac this is the control key
+            else:  # Linux and Windows
+                modifierTextList.append('win')
+
         return modifierTextList
     
         
@@ -629,11 +643,15 @@ class App(QWidget):
         if(pressedModifiers & Qt.AltModifier):
             modifierTextList.append('alt')
         if(pressedModifiers & Qt.ControlModifier):
-            #modifierTextList.append('ctrl')
-            modifierTextList.append('cmd') # on the mac this is the command key
+            if sys.platform == 'darwin':  # macOS
+                modifierTextList.append('cmd')  # on the mac this is the command key
+            else:  # Linux and Windows
+                modifierTextList.append('ctrl')
         if(pressedModifiers & Qt.MetaModifier):
-            modifierTextList.append('ctrl')# on the mac this is the control key
-            #modifierTextList.append('win')
+            if sys.platform == 'darwin':  # macOS
+                modifierTextList.append('ctrl')  # on the mac this is the control key
+            else:  # Linux and Windows
+                modifierTextList.append('win')
         return set(modifierTextList) == set(self.currentInputModifiers)
     
     def simplifyModifierList(self, modifierList):