Disable start button and desktop switch

Hello everybody

for my application, I need to restrict the access to the QNX desktop and menu button. Ideally I would like to disable the “Start” button at the bottom left corner of the screen and also to disable the desktop switch Ctrl-Alt-2 (and 3, 4 …)

I’ve been looking through the Neutrino and Photon documentation but I haven’t found anything about it.
Does anybody of you know how to do it or could you at least point me in a better direction?

Thank you very much in advance for any answer

in the Pt_ARG_FLAGS resources,set the attribute of Pt_GHOST and Pt_BLOCKED may help you.

see help for “pwm”