这个是java在eclipse环境开发可视化窗口，但是需要导入相关包-This is a java development environment in eclipse visualization window, but need to import the relevant packages

设计一个简单的Win32程序，该程序窗口内正上方居中显示“Windows API画线程序演示”字样，在程序窗口内任意位置按下鼠标左键并拖动到窗口范围内任意位置，松开鼠标左键即可绘制一条蓝色的直线。-Centered above the word Windows API program demonstrates drawing a line anywhere in the program window by pressing the left mouse button and drag to

swt框架 适用与window下java窗口开发~~~~(Java development and window SWT ~ ~ ~ ~ the window frame for)