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22.1. The Scrollbar command callback

When the user manipulates a scrollbar, the scrollbar calls its command callback. The arguments to this call depend on what the user does:

These calling sequences match the arguments expected by the .xview() and .yview() methods of canvases, listboxes, and text widgets. The Entry widget does not have an .xview() method. See Section 10.1, “Scrolling an Entry widget”.