mplayer 有这样一个参数-wid+窗口id，可以将mplayer嵌入到某个指定的窗口中，在qt4中，这样做是可以的，效果就是可以把mplayer“贴”在widget里-mplayer a parameter-wid+ window id, mplayer can be embedded into a specified window to do so is in the qt4 in effect is that mplayer " paste" in the widge