图形绘制，可设置线宽、颜色、样式，通过本例将了解如何使用自定义画笔定义线体的颜色，线宽，线形等，以及如何为程序中添加选项菜单和选项设置对话框，如何使用标准颜色对话框，如何使用字体对话框，在选项对话框中实现预览功能。实现选项对话框和窗口类中的数据交换。如何改变对话框和控件的背景色，如何改变控件的文本颜色，对按钮控件的特殊处理。如何在窗口中显示一幅位图。-VC++ graphics rendering, can set the line width, color, style, through this example will learn how to use custom brushes defined line of body color, line width, line, etc., and how to add options for the program menus and options in Settings dialog box How to use the standard color dialog box, how to use the Font dialog box, implemented in the Options dialog box preview. Implementation Options dialog box and window class data exchange. How to change the background color of dialog boxes and controls, how to change the control' s text color on button controls the special treatment. How in the window display a bitmap.