How I can access my label?
I want to change the text in my label but I can`t use ui outside of MainWindow::?How to do this?
It's a pointer, you can pass it around as any other variable - copy, make a function parameter, create a signal-slot connection... you choose.
A kinda basic approach would be to crate public "setter" method in your MainWindow and call it from wherever you want it.
Can you write me a code?
Of a setter function? C'mon... ;)
void MainWindow::setSomeLabelText(QString text)