Objective

Up until now, we have only added one widget to GtkWindow - either a label or a button. Suppose we want to add both the label and the button.

Overview

The GtkWindow widget is called a bin in php-gtk. A bin can contain one and only one child widget. To stuff more than one widgets in a GtkWindow, we need containers — widgets that can hold two or more widgets.

In this example, we will use a GtkVBox. As the name suggests, this is a vertical container that can be used to “pack” widgets vertically.

• Create a GtkVBox.
• Use GtkBox::pack_start() to add widgets into vbox. The widgets will be packed into the vbox starting from the top.

Sample Output

Sample Code

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Explanation

1. Create the vbox.
2. Add the vbox to the GtkWindow.
3. First stuff the label into the vbox.
4. Followed by the button.

Note

• If you wish to pack the widget from the bottom stacking up, use the method GtkBox::pack_end().
• Commonly used bin: GtkWindow, GtkFrame, GtkEventBox, GtkAlignment, GtkScrolledwindow
• Commonly used containers: GtkVBox, GtkHBox, GtkTable, GtkTreeview, GtkMenu

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