在本例中，采用一个滚动条，两个滑动条，分别赋予了红，绿，蓝三色，通过调节滚动条或者滑动条，来改变背景颜色。-In this case, using a scroll bar, two sliders, and given the red, green, and blue, by adjusting the scroll bar or slider to change the background color.

红绿蓝三种颜色不同比例的选择打出的色彩，色彩条宽度可调节- different proportions of red, green and blue color options play, the color of the width can be adjusted

MFC当中ScrollBar的经典实例，有三个滚动滑块分别控制红绿蓝三个颜色0~255，并在编辑框中实时显示红绿蓝的数值，并且将混合色在对话框中以矩形方式显示出来，对初学者非常有用。-Among the classic examples of MFC ScrollBar, there are three sliders control the scrolling of the three colors red, green and blue from 0 to 255, and the real