打开designer在界面上放置了一些控件，保存界面为mainUi.ui，将mainwin.ui转换为Ui_mainwin.py
pyuic5 -o mainwin.ui ui_mainwin.py
ui_mainwin.py代码都是自动生成的，大家可以不需要动，在生成的文件中有一个Ui_MainWindow类。
新的py文件main.py，代码如下：
#coding = utf-8
import sys
from PyQt5.QtWidgets
import QApplication, QMainWindow, QFileDialog
from Ui_login
import Ui_MainWindow
class
MyWin(
QMainWindow,
Ui_MainWindow):
'''
从QMainWindow, Ui_MainWindow继承，实现界面设计和业务实现的解耦
'''
def
__init__(
self,
parent=
None):
super(MyWin,
self).
__init__(parent)
self.setupUi(
self)
self.__setting()
def
__setting(
self):
'''
增加自定义配置
'''
self.setWindowTitle(
"远程维护工具")
self.resize(
800,
550)
self.splitter.setStretchFactor(
0,
1)
self.splitter.setStretchFactor(
1,
3)
self.splitter.setStretchFactor(
2,
2)
self.splitter.setMaximumWidth(
1500)
#增加信号处理
self.pushButton.clicked.connect(
self.slot1)
self.actionClose.triggered.connect(
self.close)
self.actionOpen.triggered.connect(
self.on_open)
self.actionSave.triggered.connect(
self.on_save)
#自定义信号处理函数
def
slot1(
self):
print(
"点击。。。")
def
on_save(
self):
FullFileName, _ = QFileDialog.getSaveFileName(
self,
'文件另存为',
r
'./',
'TXT (*.txt)')
set_text =
self.txt_view.toPlainText()
with
open(FullFileName,
'wt')
as f:
print(set_text,
file=f)
def
on_open(
self):
txtstr =
""
FullFileName, _ = QFileDialog.getOpenFileName(
self,
'打开',
r
'./',
'TXT (*.txt)')
with
open(FullFileName,
'rt')
as f:
lines = f.readlines()
for line
in lines:
txtstr = txtstr+line
self.txt_view.setText(txtstr)
if
__name__ ==
"__main__":
app = QApplication(sys.argv)
w = MyWin()
w.show()
sys.exit(app.exec_())