GtkTreeItem::expand
Shows the node's subtree and emits the "expand"
signal. When expanded, the icon to the left of the node changes from a
+ (plus) to a - (minus). Show must also be called on each subtree item
before it will be visible.
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Imagination is a quality given a man to compensate him for what he is not, and a sense of humor was provided to console him for what he is.The uglier a man's legs are, the better he plays golf. It's almost a law.
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