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Re: Progress bar
It isn't trivial, but not too bad. If you don't know how long something will take, but know it will take a long time, the accepted approach is to display an indeterminate progress bar -- the animated kind that throw stuff in the trash or look like a barber pole are examples of this.
If you can estimate the percentage, then you use something like a sliding progress bar.
For the first one, you simply show something that is animated, such as a gif, or perhaps just a piece of text telling the user what you are doing.
If it is the second, you show or ungray a slider when the copy starts, and several times a second, you update the percentage in the slider. At the end of the copy, you hide it.
That is the general approach.
Greg McKaskle
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