Reset keyboard
lazarus / 34-Windows

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pcurtis · 2021-05-18 05:24

Two things.

1. I am playing with SendInput, when I make a mistake (keys get stuck
as pressed) I usually have to restart my PC to reset the keyboard.
Can I reset it programmatically?

2. Anyone know how to send, for example, ALT+0149 (numeric keypad) or
CTRL+ALT+DELETE

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pcurtis · 2021-05-18 06:06

A little more info. I am disabled and only have one arm. It is
impossible for me to perform complex key strokes, so I was thinking of
an app with three toggle buttons - CTRL ALT SHIFT that I could press
that would press and hold each respective key. So for example I could
click ALT then press 0 1 4 9,  on the numeric keypad, release the ALT
key to enter the character.

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paweld · 2021-05-18 06:42

https://wiki.freepascal.org/MouseAndKeyInput
or
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i uses
Windows; keybd_event(VK_MENU, 0, 0, 0); //alt downkeybd_event(VK_0, 0,
0, 0);keybd_event(VK_0, 0, KEYEVENTF_KEYUP, 0); keybd_event(VK_1, 0,
0, 0);keybd_event(VK_1, 0, KEYEVENTF_KEYUP, 0); keybd_event(VK_4, 0,
0, 0);keybd_event(VK_4, 0, KEYEVENTF_KEYUP, 0); keybd_event(VK_9, 0,
0, 0);keybd_event(VK_9, 0, KEYEVENTF_KEYUP, 0); keybd_event(VK_MENU,
0, KEYEVENTF_KEYUP, 0); //alt up

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trev · 2021-05-18 06:49

The operating system already provides this facility: see, for example,
https://www.isunshare.com/windows-10/3-ways-to-turn-on-and-off-sticky-
keys-in-windows-10.html

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pcurtis · 2021-05-18 07:13

@trev How can I send ALT 0149 with sticky keys? The ALT key is
released when I press 0, MS not very sticky 

@paweld VK codes do not work, I must use scan codes (0x38 = VK_MENU),
but the same problem, the ALT key is released when I press another key

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trev · 2021-05-18 07:28

Windows 10 sticky keys feature works for me - I just tested it.

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pcurtis · 2021-05-18 08:34

I know, it works here also but out of interest  I would like to try my
own app and solve the issue as described above.