Cropping an image in qt

[Johncdy]

Hi Im new in Qt like for 3 weeks and Im currently developing an extensive application.

For the first app im making I had difficulties on the following and I need urgent help.
A big Thanks for those who will be able to help me.

I researched a lot and used different types of techniques but not of these work, I need suggestions, codes itself if possible.

Untitled.jpg To Untitled2.jpg

Pls tell me what to do even how extensive they are.

I used SetClipPath but i cant seem to make it work.