How to disable alt+left click to drag windows?

[kevin_tee]

There is an app that need to use alt+left click, but instead the window got drag. I can find the setting for it. Like needle in haystack.

[leszek]

Thats indeed an interesting problem. By default every window manager catches that to move around windows.
You can change that luckily in the window manager -> window behavior settings -> window actions.
If you don't find it execute

Code:

kcmshell5 kwinoptions

to get to it directly.
Under the window actions tab you can set up what happens on Alt+LeftClick. Setting it to nothing is probably what you want.

[kevin_tee]

Found it, plasma 5.8.5
http://imgur.com/E4J7SSC
http://imgur.com/rpMg3VB

[kdemeoz]

Plasma 5.8.5? How?