Objective

Let's use another widget in this example - a button.

Overview

In the previous example, we use GtkLabel to display "Hello World". In this example, we use GtkButton to display a button. The GtkLabel and GtkButton are called widgets in php-gtk. There are many other widgets in such as GtkRadioButton, GtkMenu, GtkTable, including GtkWindow.

• You will see the same 4 key lines (as explained in the previous example).
• Now instead of creating a GtkLabel, we create a GtkButton.
• Then stuff the button inside the window using GtkContainer::add() as before.

Sample Output

Sample Code

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Explanation

For almost all php-gtk2 scripts, you will find the following four key lines (highlighted in blue):

1. Creates a button.
2. Add the button to the window.

Note

Think of widgets as different types of Lego building blocks. Some are plain rectangular blocks. Some are round blocks. Some have buttons. By creatively combining these different building blocks, we can build almost anything we have in mind.

Same for php-gtk2. Writing php-gtk2 scripts is all about knowing what are the widgets available, and their corresponding properties, methods and signals.

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