QOnceThread

qt临时的线程，执行回调完成即结束，执行结果结束使用信号通知

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
QThreadDemo.pro		QThreadDemo.pro
QThreadDemo.pro.user		QThreadDemo.pro.user
README.md		README.md
main.cpp		main.cpp
mainwindow.cpp		mainwindow.cpp
mainwindow.h		mainwindow.h
mainwindow.ui		mainwindow.ui
xthread.cpp		xthread.cpp
xthread.h		xthread.h

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