nothing
Merge branch 'master' of https://github.com/lijianping/NetworkChat
群聊基本实现（未写入文本）
Merge branch 'master' of https://github.com/lijianping/NetworkChat
群聊（基于tcp)基本实现，（文本保存未实现
Merge branch 'master' of https://github.com/lijianping/NetworkChat
实现群聊信息保存
关闭对话框，资源消耗大