这是一个可以实现长整数加减乘除的程序，请大家多多指教

非常好的界面资源，按钮，对话框等。有利于使用vc和evc的界面设计-Very good resource interface, buttons, dialog boxes and so on. Conducive to the use of EVC vc and the interface design

对Tab Control的具体实现，对初级程序员具有参考价值。-Tab Control of the concrete realization of junior programmers with reference value.

用Split控件来实现分割面板，并在面板中显示出几个图形，文件为SplitPaneDemo.java-with Split Control Panel to achieve segmentation, and the panel shows that few graphics, document SplitPaneDemo.java

一个小小的时钟。 时钟跟随着鼠标移动，时刻显示当前时间，背景半透明。-a little clock. With the clock with a mouse moving, always show the current time, the translucent background.

矩阵相乘，演示了编辑框传输数据和显示，隐藏等功能。特别适合初学者学习和研究。-Matrix multiplication, demonstrate data edit box and display, hidden functions. Particularly suitable for beginners to learn and research.

本原码来自：thinking in java-yards from the Primitive : thinking in java

能够应用文件打开的数据 进行处理 调用画图函数 在窗口显示出来-application to open the document the data processing function called drawing displayed in the window

一个显示被选的图形文件图片的图形界面应用程序-an election shows that the graphic photographs document the GUI applications

VC实现真彩色的工具栏 -VC realize True Color Toolbar

如何改变对话框的背景色-how to change the background color dialog