Detect pressed modifier key in inspector callback registered using set_time_inspector(when='hover')

[quest2nest]

Hi highfestiva,

First off, finplot is one of the most enchanting pieces of software I've used. It honestly feels like magic. Thank you so much for creating it!

I'm new to pyqtgraph in general, so I have a (hopefully) quick question. What would be the best way to detect whether a modifier key (shift, ctrl, alt) is pressed within an inspector callback?

My use case: I draw a horizontal arrow (using pg.ArrowItem) on the plot and want to be able to move it up or down using the mouse. I couldn't find a clean way of hooking into the FinViewBox.mouseDragEvent() handler so I figured I could use an inspector for the hover event to move the arrow as long as a modifier key is pressed - that would work just as well for my purposes!

[highfestiva]

In PyQt6 you can get your keyboard modifiers like so:

from PyQt6.QtWidgets import *
print('keyboardModifiers:', QApplication.keyboardModifiers())