How to modify the behaviour for "?" button on the window title bar?

qtui

Hi all,

I am trying to use "?" button on the window title bar to display my help manual, I have 2 issues now:
1, The "?" is visible but it does not respond when I click it.
2, How can I change its behavior when I click it? thanks.

raaghuu

it activates the What's This? mode... refer to QWhatsThis documentations
this i don't know...but it will probably involve reimplementing a lot of things