[KBM] Avoid checking reserved/unassigned/oem-specific/undefined key codes during shortcut remaps (#6952)

* Updated list of key codes to be ignored

* Added comments

src/modules/keyboardmanager/common/Shortcut.cpp

@@ -613,25 +613,53 @@ bool Shortcut::CheckModifiersKeyboardState(InputInterface& ii) const
     return true;
 }
 
+// Helper method for checking if a key is in a range for cleaner code
+bool in_range(DWORD key, DWORD a, DWORD b)
+{
+    return (key >= a && key <= b);
+}
+
+// Helper method for checking if a key is equal to a value for cleaner code
+bool equals(DWORD key, DWORD a)
+{
+    return (key == a);
+}
+
 // Function to check if the key code is to be ignored
 bool IgnoreKeyCode(DWORD key)
 {
+    // Ignore mouse buttons. Keeping this could cause a remapping to fail if a mouse button is also pressed at the same time
     switch (key)
     {
-        // Ignore mouse buttons. Keeping this could cause a remapping to fail if a mouse button is also pressed at the same time
     case VK_LBUTTON:
     case VK_RBUTTON:
     case VK_MBUTTON:
     case VK_XBUTTON1:
     case VK_XBUTTON2:
-        // Ignore these key codes as they are reserved. Used by IME keyboards. More information at https://github.com/microsoft/PowerToys/issues/5225
-    case 0xF0:
-    case 0xF1:
-    case 0xF2:
         return true;
     }
 
-    return false;
+    // As per docs: https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes
+    // Undefined keys
+    bool isUndefined = equals(key, 0x07) || in_range(key, 0x0E, 0x0F) || in_range(key, 0x3A, 0x40);
+
+    // Reserved keys
+    bool isReserved = in_range(key, 0x0A, 0x0B) || equals(key, 0x5E) || in_range(key, 0xB8, 0xB9) || in_range(key, 0xC1, 0xD7) || equals(key, 0xE0) || equals(key, VK_NONAME);
+
+    // Unassigned keys
+    bool isUnassigned = in_range(key, 0x88, 0x8F) || in_range(key, 0x97, 0x9F) || in_range(key, 0xD8, 0xDA) || equals(key, 0xE8);
+
+    //OEM Specific keys. Ignore these key codes as some of them are used by IME keyboards. More information at https://github.com/microsoft/PowerToys/issues/5225
+    bool isOEMSpecific = in_range(key, 0x92, 0x96) || equals(key, 0xE1) || in_range(key, 0xE3, 0xE4) || equals(key, 0xE6) || in_range(key, 0xE9, 0xF5);
+
+    if (isUndefined || isReserved || isUnassigned || isOEMSpecific)
+    {
+        return true;
+    }
+    else
+    {
+        return false;
+    }
 }
 
 // Function to check if any keys are pressed down except those in the shortcut