Listing 5.basic code for the manual progressbar.

列表5 .手动progressbar的基本代码。

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The first line of the program requires the progressbar library file.

程序的第一行导入了progressbar库文件。

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Note that the top ProgressBar changes its length when the window is resized.

注意，当窗口大小发生变化时，顶部的ProgressBar会改变它的长度。

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Note that the top ProgressBar changes its length when the window is resized.

注意，当窗口大小发生变化时，顶部的ProgressBar会改变它的长度。

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