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When your application performs a time-consuming operation, you can use a progress bar (TProgressBar) to show how much of the task is completed. A progress bar displays a dotted line that grows from left to right.
The Position property tracks the length of the dotted line. Max and Min determine the range of Position. To make the line grow, increment Position by calling the StepBy or StepIt method. The Step property determines the increment used by StepIt.