简单文本编辑器，能实现文字的输入、修改、删除，同时在状态栏能显示鼠标的位置、当前系统时间。并具有简单的绘图功能，比如用鼠标画线、能画圆、画矩形等等。-Simple text editor, can achieve text input, modify, delete, at the same time in the status bar can show the location of the mouse, the current system time. And have simple gra