From Nokia Developer Wiki
Pop-up is a small window, which is used to give some information to the user and it appear with the main active window. It can be used for giving alert messages or simple messages to the user. This article clearly presents the approach to create a pop-up in your application with Symbian C++. Contructing, showing-up and hidding-up the pop-up are illustrates with the code snippest.
The Pop-up is basic and simple approach of Symbian C++, but I really appreciate the users who contribute on these kind of basic concepts and help beginners. This article will help beginners to learn to create pop-ups.