针对传统播放器的只能在单一系统平台运行的不足进行了改进，运用 Qt 作为系统开发平台、Phonon 作为后台解码组件，设计和实现了跨平台多媒体播放器。随着跨平台应用软件的广泛应用，系统中运用跨平台的设计思想和方法，能作为跨平台软件开发的一个有效的解决方案-The traditional media player running only in a single system platform，and designed and implementeda cross-platform of media player using Phonon as the background decoder based on Qt platform is described toimprove． With the widely applying to cross-platform software，the ideas and methods which designed cross-platform

software in the thesis system can be a effective solution to cross-platform software development．