wtl开发的tray。非常方便实用。建议大家都用用，很实用。可以直接用在项目里。-wtl developing tray. Very convenient and practical. Suggest that you are using to use, very practical. Can be directly used in the program.

wtl 编写的 colorstatusbar， 多彩状态条， 学习的好例子-wtl color status bar， good exemple for us