.UI文件
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>widget</class>
<widget class="QWidget" name="widget">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>384</width>
<height>112</height>
</rect>
</property>
<property name="windowTitle">
<string>文件拷贝</string>
..