When pressing a key, the key is first identified by its Scan Code-then, Windows acts based upon the Virtual Key Code assigned to that hardware Scan Code. Enter, Tab, Space, NumLock, etc.) and can be mapped to any key on the keyboard. In AutoHotkey, the action for each Virtual Key Code, in hexadecimal ASCII code, conforms to one of the key action names assigned in the Key List (e.g. For the Windows operating system, Microsoft assigned each of these Virtual Key action codes corresponding with a keyboard hardware Scan Code.
VIRTUAL KEY CODES SOFTWARE
Look upon Virtual Key Codes as the action software which sends the input commands.
VIRTUAL KEY CODES CODE
You can change the Scan Code through AutoHotkey, but that merely translates the original hardwired code to the new code. Even if you change the function of that key through software, the original Scan Code does not change. Each physical key has a unique Scan Code which is always associated with that particular button on the keyboard. Scan Codes are hardwired into the keyboard. Think of keyboard Scan Codes as hardware and Virtual Keys Codes as software. But, before considering techniques, let’s look at the differences between Scan Codes and Virtual Key Codes. Keyboard Scan Codes ( SCnnn) and Virtual Key Codes ( VKnnn)-discussed in the Special Keys section at the bottom of the AutoHotkey Key List-offer alternative methods for changing key assignments and reconfiguring your keyboard to suit your needs. Scan Codes (SCnnn) Versus Virtual Keys Codes (VKnn) But, you need to understand what they are and how they work. AutoHotkey Scan Codes and Virtual Key Codes can give your Hotkey scripts that additional flexibility and power. But for unusual situations or unique applications, the Scan Codes hardwired into your keyboard or the Microsoft assigned Virtual Key Codes may be the best way to implement special Hotkeys or remap your keyboard. Regardless of the situation, there is usually a method in AutoHotkey for taking advantage of these extra or missing keys by using the listed special key names.
VIRTUAL KEY CODES SERIES
New to AutoHotkey? See “ Introduction to AutoHotkey: A Review and Guide for Beginners.”įor people who want this entire series in one updated e-book, see AutoHotkey Hotkey Techniques at ComputorEdge E-Books.
If you find any of the information too confusing, then reviewing earlier blogs may be worthwhile. This beginning Hotkey blog builds upon the discussions in the previous parts. These situations may call for a unique approach to setting up Hotkeys. At other times, you may find keys on your keyboard which don’t appear in the AutoHotkey list. However, you will likely find key action names in the AutoHotkey Key List with no corresponding key on your particular keyboard (e.g. That means using the available keys and the usual AutoHotkey key names and techniques. When setting up Hotkeys, you must work with the keyboard you own. Detached desktop keyboards may include many extra keys while smaller laptop keyboards might be shortened versions of their larger cousins.
Learn the Difference Between AutoHotkey Keyboard Scan Codes (SCnnn) and Virtual Key Codes (VKnn) and When to Use Them for Hotkeys
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