Disabling the shadow around JInternalFrames with the Aqua Look and Feel
问题 On Mac OS X with the native Aqua Look and Feel, JInternalFrames have a shadow that is part of the frame border. When the internal frame is maximized, the shadow is still visible and takes a lot of space. Is there a way to remove this shadow without switching to another look and feel? 回答1: After digging into the Aqua L&F code in OpenJDK I found an undocumented property that let you change the style of an internal frame. Shadows can be removed with this: internalFrame.putClientProperty(