i am using stacked widget and i want to have the following effect : when i press a pushbutton , the button should move to the center and gradually fade out at the same time. while the button is fading the next page of the stacked widget should gradually fade in or any kind of animation would do. tried many thing but i got unsatisfactory results. the animation should work work on windows and linux.
For security reasons, it is desirable to check the integrity of code before execution, avoiding tampered software by an attacker. So, my question is How to sign executable code and run only trusted ...