VC静态控件和滚动条控件的演示和实现 创建三个滚动条,分别用来控制红绿蓝三个颜色的变化,并在编辑框中显示当时的RGB值,变化的颜色效果在一个椭圆中以填充椭圆的方式显示-VC static controls and scroll bar controls the presentation and realization of the creation of the three scroll bars, respectively, used to control the three RGB co