LED模拟显示程序，图形美观，方便好用，开放源代码，无使用限制，无需任何费用。-LED analog display program, graphics, beautiful, easy-to-use, open source, non-use restrictions, free from any charge.

这个小程序完成了控件可以在窗体内自由拖动。-This small program completed body of controls can freely drag the window.