在 SWT 中，有 3 种内置状态，每种状态用一种颜色表示:

In SWT there are 3 built-in states, each represented by a color:

progressBar.setState(SWT.ERROR); //Red Fill color. Useful when the task is aborted. 

此状态不支持不确定的进度条样式(SWT.INDETERMINATE).

This state does not support an indeterminate progress bar style (SWT.INDETERMINATE).

progressBar.setState(SWT.PAUSED); //Yellow Fill color.

此状态将暂停不确定的进度条动画.

This state will pause the indeterminate progress bar animation.

progressBar.setState(SWT.NORMAL); //Default state and color as controlled by OS.