Adjust relative mouse movement for mouse pointer speed

[SanjoSolutions]

The documentation makes it appear as if one can achieve accurate mouse movement with it.

pyinterception/src/interception/inputs.py

Lines 110 to 116 in 0da18c0

	interception.mouse_position()
	>>> 300, 400
	# move the mouse by 100 pixels on the x-axis and 0 in y-axis
	interception.move_relative(100, 0)
	interception.mouse_position()
	>>> 400, 400

It seems that the actual number of pixels moved is dependent also on the mouse speed setting (based on the info here https://github.com/learncodebygaming/pydirectinput/blob/a585d044aed678576fefd24e7ad0c5945ab52366/pydirectinput/__init__.py#L412C7-L417). In my tests it has moved more pixels than I've called move_relative with.

I suggest to update the documentation.

[kennyhml]

Does this apply with mouse acceleration disabled? I have used relative mouse movement with hundreds of clients and have had absolutely zero inconsistencies with it

[SanjoSolutions]

It seems yes but I can maybe at some point debug it and see if it was really off when the movement happended (check if

pyinterception/src/interception/inputs.py

Line 88 in 0da18c0

with _utils.disable_mouse_acceleration():

works correctly).

[kennyhml]

I just confirmed it turning the acceleration off manually.

Interesting stuff, honestly I never really even considered playing with that slider.

Definitely something I'll keep in mind trying to find an adjustment for. The values arent hard to query, so you can easily scale up / down the amount to move.

[SanjoSolutions]

More info on mouse speed. How to read out the mouse speed (not tested):

import ctypes
SystemParametersInfoA = ctypes.windll.user32.SystemParametersInfoA
SPI_GETMOUSESPEED = 0x0070

mouse_speed = ctypes.c_int()
SystemParametersInfoA(SPI_GETMOUSESPEED, 0, mouse_speed, 0);

Documentation

[SanjoSolutions]

Here is the information regarding the relate movement: https://learn.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-mouseinput#remarks. Maybe this URL can be just included in the documentation of move_relative.