一款Vc++颜色渐变进度条，设定总进度以及是否显示百分比，点击测试按钮，一个彩色进度条出现眼前，很漂亮。 -A Vc++ color gradient progress bar, set whether to display the total progress and the percentage, click the Test button, a colored progress bar appears before your eyes, very pretty.