e608. preventing a window from gaining the focus.txt

这里面包含了一百多个JAVA源文件

If Window.setFocusableWindowState(false) is called on a window, neither the window nor any of its children components can gain the focus. However, components like buttons can still invoke actions. 
On some platforms, if the non-focusable window is the only window visible in the application, the non-focusable window will gain the focus. However, none of the children components will gain the focus. 

    
frame.setFocusableWindowState(false);