raise - Change a window's position in the stacking order
button .b -text "Hi there!"
pack [frame .f -background blue]
pack [label .f.l1 -text "This is above"]
pack .b -in .f
pack [label .f.l2 -text "This is below"]
raise .b
轉載于:https://www.cnblogs.com/greencolor/archive/2011/08/12/2136278.html
操作)
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