QWIDGET、QMAINWINDOW、QFRAME、QWINDOW、QDIALOG、QSCROLLAREA区别

QWindow通常不用

QDialog对话框而已

QScrollArea有滚动条的窗口。

from PyQt5.QtWidgets import (QWidget,QListWidget,QLabel,QApplication,QScrollArea,
QFrame,QAction,QVBoxLayout,QListWidgetItem,QPushButton,QHBoxLayout,QGridLayout,QLineEdit)
from PyQt5 import QtCore
from PyQt5.QtCore import *
from PyQt5.QtGui import *

import sys

app=QApplication(sys.argv)
window=QWidget()
window.show()
sys.exit(app.exec_())