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GtkAlignment - A widget which controls the alignment and size of its child
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GtkAspectFrame - A frame that constrains its child to a particular aspect ratio
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GtkHBox - A horizontal container box
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GtkVBox - A vertical container box
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GtkHButtonBox - A container for arranging buttons horizontally
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GtkVButtonBox - A container for arranging buttons vertically
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GtkFixed - A container which allows you to position widgets at fixed coordinates
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GtkHPaned - A container with two panes arranged horizontally
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GtkVPaned - A container with two panes arranged vertically
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GtkLayout - 
Infinite scrollable area containing child widgets and/or custom drawing
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GtkNotebook - A tabbed notebook container
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GtkTable - Pack widgets in regular patterns
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GtkExpander - A container which can hide its child