使用第三方控件ARBackgroundtest.ocx实现的窗体渐变色效果，本实例使用了一个渐变条控件：ARBackgroundtest.ocx，测试前进行一些设置或使用默认设置也可以，渐变的背景色和前景色可自定义，然后点击相应的渐变类型可看到窗口背景的渐变色填充效果，可上下左右填充等-Achieved using third-party controls ARBackgroundtest.ocx form gradient effect, this example uses a gradient bar control: ARBackgroundtest.ocx, before testing some settings or use the default settings can be, gradient background and foreground colors can be customized , then click on the appropriate type of gradient you can see the window background gradient fill effect can be up and down filling