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With different hotkey press patterns many more actions can be triggered than just with a hotkey press itself. For example, the key "a" sends "a", two short presses sends "ä", a long press sends "á", and so on. Like Morse codes for different actions.

The following Morse function determines the base key from the current hotkey, and starts monitoring it. If it is released after longer time than timeout (default to 400ms), "1" is appended to the Pattern variable. If the key is released sooner, "0" is appended.

Then the scripts waits for the key to be pressed down again. If it is not pressed within the timeout period, the 0-1 pattern of the last key presses are returned, otherwise the next key hold time will be appended to the Pattern. Usage examples are at the end of the script, for Alt-Z and BackSpace.
Edit 20070224: Fixed key hold time, not to include key-up time

Fantastic!!!!
Thank you very much!!!!

Fixed in the original post the key hold time, not to include key-up time. It is more accurate now.

Superb Laszlo, thank you very much !

I tried with LButton and timout=150 which seems more natural

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Wow. Very useful script!

Great idea. Though I wouldn't want to use it like in your "a" example. The delay would make normal typing impossible. I guess it would be possible to cook something similar up using Input instead of (or along with) KeyWait that wouldn't get in the way of typing.

Input was not used, because (in a loop) it loses keystrokes at fast typing.

You should experience with the settings to fit your style. The “a” example assumes that you never need to type “aa”. If you do, probably a better setup is when a short press time terminates the loop. This way the different replacements only occur after the key “a” was held pressed for a certain time.

I tried many possible ways to enter diacritical letters. For seldom needed characters (like Greek letters) the post-modifier technique was the best for me, because you don’t have to remember their exact invocation. For often used ones I redefined the number keys in the top row of my US keyboard, when ScrollLock is activated. Now the LED sows, which layout is active, and I still have the numbers on the numpad. There are symbols I use moderately often, like ≈, ±, ≥. They get their hotstrings, like \~, \+, \>.

Hi guys,

can someone explain, where we could use this script?

Thank you a lot. I've implemented it in RapidHotkey()

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AHK_H (2alpha) AHF TT _Struct WatchDir Yaml _Input ObjTree RapidHotkey DynaRun

This could add a lot of functionality to keyboards. Now I can double click any key I want

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