用Qt4 phonon实现的一个多媒体播放器，支持播放器基本操作功能，以及双击全屏，播放列表，播放器窗口大小记忆，文件拖拽。-Qt4 phonon, a multimedia player, support the basic operating functions of the player, and double-click on the full screen, play list, the player window size memory, file drag and drop.