How to swap and restore the functions of left Alt and Ctrl keys in Windows

Introduction:

Customizing keyboard functionality can enhance workflow and provide a personalized experience for Windows users. Among the common customizations is swapping the functions of the Left Alt and Ctrl keys. This article will guide you through the process using the Windows Registry, and how to revert to the default settings when needed.

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1. Swapping the Left Alt and Ctrl Keys:

Step 1: Create a Backup
Before making any changes to the Windows Registry, always back it up. This ensures you can restore your system to its previous state in case of any unintended consequences.

Step 2: Modify the Scancode Map
The Scancode Map in the Windows Registry determines the behavior of keys. To swap the Left Alt and Ctrl keys:

• Open a new text document.
• Copy and paste the following registry code:

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=hex:00,00,00,00,00,00,00,00,03,00,00,00,38,00,1d,00,1d,00,38,00,00,00,00,00

• Save the text document with a .reg extension, e.g., SwapAltCtrl.reg.
• Double-click the file to merge it with the registry.
• Confirm the changes and restart your computer for them to take effect.

2. Restoring Default Key Functions:

If you wish to revert to the default key functions:

• Open a new text document.
• Copy and paste the following registry code:

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout]
"Scancode Map"=-

• Save the file with a .reg extension, e.g., RestoreDefaultKeys.reg.
• Double-click the file to merge it with the registry.
• Confirm the changes and restart your computer to apply.