Keyboard shortcut mapping for Ctrl+Alt+Del in Parallels I'm a Windows user with a Windows-oriented keyboard, and I switched the Command and Ctrl keys in OSX, because I want to use the same keyboard shortcuts whether in Windows or OSX.  This came back to haunt me though when I installed a Windows VM in Parallels, and it broke the Ctrl+Alt+Del key combo to login to Windows in the VM (since the Ctrl key is mapped to Command).  I would like to create a shortcut mapping Command+Option+Del to the Parallels menu item Devices -> Keyboard -> Ctrl+Alt+Delete, but the shortcuts section of System Preferences -> Keyboard does not allow me to use the Del key.

I tried following the instructions in this answer, adding this:

&lt;key&gt;Ctrl+Alt+Delete&lt;/key&gt;
&lt;string&gt;@~&amp;#x7f;&lt;/string&gt;


to each of

~/Library/Preferences/com.parallels.Parallels.plist
~/Library/Preferences/com.parallels.Parallels Desktop.plist
~/Library/Preferences/com.parallels.desktop.console.plist


but the key combo is not activating the menu item to send Ctrl+Alt+Del when adding the XML to any of those.

What am I doing wrong here?  Do I need something special to activate the options in the "keyboard" submenu of "Device"?  Do I have the wrong code for the Del key?  Am I putting the XML in the wrong plist file(s)?

[Edit]

The problem is worse than I thought, because the keys stay switched in Windows.  Is there a way to set the modifier key behavior on a per-application basis?  It would be great if I could swap the Command and Ctrl keys generally, and swap them back in Parallels.
I did not find an answer to the base question, but I did locate a sufficiently good workaround.  Karabiner offers finer-grained control of keys than OSX's keyboard settings, including the ability to add exceptions to key switching.  I used these settings:

Karabiner -&gt; Change Key
    Change Command_L Key -&gt; Command_L to Control_L (except Virtual Machine, RDC)
    Change Control_L Key -&gt; Control_L to Command_L (except Virtual Machine, RDC)


Now all of the Ctrl keyboard shortcuts I am accustomed to work in both OSX and my VMs.