Hi there. When I draw, I often use the undo command (ctrl + z).
Due to the fact that I press "ctrl" the "colour picker" tool is selected. And it picks the background color.
I want to disable the "colour picker" tool for the "ctrl" key.
Is it possible?
Thank you.



P.S.
Why is this "colour picker" tool bothering me?
I know the "color history" is in the popup by clicking the "right mouse button". And I can choose the previous color.
But the "right mouse button" of the pen of my tablet doesn't work in krita.
In the other softwares, the "right mouse button" of the pen works correctly. It doesn't work only in krita.
When I click "right mouse button" by pen of the tablet. The "pan tool" (with hand icon) is selected.
My tablet is "10moons G20". And it's not on the list of supported tablets.
https://docs.krita.org/en/reference_manual/list_supported_tablets.html#list-supported-tablets
http://eng.10moons.com/info5531.html

Pressing Ctrl should bring up the colour picker icon (as a temporary picker) but it shouldn't actually pick a colour until you touch the stylus to the canvas or press a stylus button.
Does it still pick a colour if you press Ctrl when the stylus is away from the tablet?

Normally, in my experience with a Wacom tablet, it's the back(-) pen button that gives right-click (pop up palette) and the front(+) button gives the Pan tool.
As noted in the tablet tester, stylus touch/movement and left click are B1, front button is B4, right-click and back button are B2, front button plus touch is B5, back button plus touch is B3.
It may be that your tablet driver is providing different signals. It may or may not be possible for you to change this in the drver setup/config utility.

In krita, switching from WinTab to Windows Ink (then restart krita) is a common solution to dealing with lack of pressure signals. I don't know if it will have any effect on the interpretation of button signals but you could try it to see. (And make the appropriate changes in the tablet utility and/or Windows system settings to disable/enable Windows Ink as appropriate.)

If you're still keen on disabling the Ctrl colour picker, it is possible to do that but its a terrible kludge which works for me but may not work for you:

Settings -> Configure Krita -> Canvas Input Settings, expand the Alternate Invocations group
You'll see the clolur picker actions listed according to their standard controls.
For each of them, double-click on 'Mouse Button' then change it to 'Key Combination' then double-click on whatever the Input Value is and change it to the '=' key.
The '=' key is not used for anything else and it's out of the way and unlikely to be accidentally pressed.

After that, pressing the Ctrl key will bring up the Zoom icon so depending on why you have the Ctrl colour picker problem, you may then have some zoom stutter. I don't know for sure what will happen for you. If you get zoom stutter, try pressing Ctrl when the stylus tip is away from the tablet surface.
Those changes to Alternate Invocations will be saved in a file called 'kritadefault.profile' (or whatever profile you're using) in the 'input' folder of your krita resources folder. So if it all goes wrong, you can close krita, delete that file and then restart.

Thank You very much.