I used a book from Jasmin B. and tried to use Qt4.8.
I wonder, why when I type #include<QApplication> or #include<QLabel> it didn't work.
May be all of you have some experience, please help.
Thanks in advance.
Are you getting any error messages?
What IDE are you using?
Do you use qmake and a proper .pro file?
Perhaps you should be a bit more descriptive than "It didn't work". This is not helping us help you diagnose the problem. What are you doing exactly (show us your code perhaps), and what is the exact error that you get?