GtkAspectFrame A frame that constrains its child to a particular aspect ratio. The #GtkAspectFrame is useful when you want pack a widget so that it can resize but always retains the same aspect ratio. For instance, one might be drawing a small preview of a larger image. #GtkAspectFrame derives from #GtkFrame, so it can draw a label and a frame around the child. The frame will be "shrink-wrapped" to the size of the child. Create a new #GtkAspectFrame. @label: Label text. @xalign: Horizontal alignment of the child within the allocation of the #GtkAspectFrame. This ranges from 0.0 (left aligned) to 1.0 (right aligned) @yalign: Vertical alignment of the child within the allocation of the #GtkAspectFrame. This ranges from 0.0 (left aligned) to 1.0 (right aligned) @ratio: The desired aspect ratio. @obey_child: If %TRUE, @ratio is ignored, and the aspect ratio is taken from the requistion of the child. @Returns: the new #GtkAspectFrame. @ratio: The desired aspect ratio. Set parameters for an existing #GtkAspectFrame. @aspect_frame: a #GtkAspectFrame @xalign: Horizontal alignment of the child within the allocation of the #GtkAspectFrame. This ranges from 0.0 (left aligned) to 1.0 (right aligned) @yalign: Vertical alignment of the child within the allocation of the #GtkAspectFrame. This ranges from 0.0 (left aligned) to 1.0 (right aligned) @ratio: The desired aspect ratio. @obey_child: If %TRUE, @ratio is ignored, and the aspect ratio is taken from the requistion of the child.