Using the input dialog 

The input dialog can accept data of any type, including integer, double, and text. In this recipe, we will learn to get text from the user. We will make use of an input dialog to know the name of the country in which the user lives.

The input dialog box will display a combo box showing different country names. On choosing a country by name, the chosen country name will appear in the textbox.

How to do it...

Let's create a new application based on the Dialog without Buttons template by performing the following steps:

1. Since the application will prompt the user to choose the country that he/she lives, via input dialog, so drag and drop one Label widget, one Line Edit widget, and one Push Button widget onto the form.
2. Set the text property of the Label widget to Your Country.
3. Set the text property of the Push Button widget to Choose Country.
4. Set the objectName property of the Line Edit widget to lineEditCountry.
5. Set the objectName property of the Push Button widget to pushButtonCountry...