本程序的类，实现用继承进度条并修改进度条的函数实现彩色（也可彩色渐变）的块装进度背景和进度。-this type of procedure, to achieve progress with the succession of changes and the progress of the function color (which can also color gradient) loaded block progress backg

本程序的类，实现用继承进度条并修改进度条的函数实现彩色（也可彩色渐变）的块装进度背景和进度。-this type of procedure, to achieve progress with the succession of changes and the progress of the function color (which can also color gradient) loaded block progress backg