[Qt-interest] clear QGridLayout

[Frank Lutz]

Sorry i have forget to say thank you!
No that didn't was a Problem, but by all removeWidget|Layout|Item(),
i do simply forgot the delete. :)

Now i had used it, but the ownership from the children goes up to the 
parent and not go null.

That's a little problem, because the children are Class.variables. So i 
do can delete them all and make new,

but there i do not have so much experience on c++, it that an nice way?
Or is there an better way on Qt?

thanks very again!