import shutil 废了相当长的时间,原来是应该写成 QtWidgets.QApplication(sys.argv)而不是 QApplication(sys.argv)否则就会出现下图: ###主函数入口 ###if__name__ =='__main__': app=QtWidgets.QApplication(sys.argv) mainWindow=QtWidgets.QMainWindow() ui=Ui_MainWindow() ui.setupUi(mainWindow) mai...
把倒数第三行QtWidgets.去掉。末尾添加sus.exit(app.exec_())
Error NameError: name 'argv' is not defined 源代码 import sys from PyQt5.QtWidgetsimport QApplication, QWidget if __name__ =='__main__': # 创建QApplication类的实例 app = QApplication(sys, argv) # 创建一个窗口 w = QWidget() # 设置窗口尺寸 w.resize(400,200) # 移动窗口 w.move(...
import sys from PyQt5.uic import loadUi from PyQt5 import QtCore, QtGui, QtWidgets import mysql.connector from PyQt5.QtWidgets import QDialog , QApplication , QLineEdit , QInputDialog class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWin...
Class name App(QDialog): is the one that has the error. I was following exactly as YouTube video, while his code works, mine doesn't. What can I try next? import sys from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow, QPushButton, QMessageBox, QBoxLayout from PyQt5.Qt...
# 需要导入模块: from PyQt4.QtGui import QApplication [as 别名]# 或者: from PyQt4.QtGui.QApplication importsetApplicationName[as 别名]defmain():"""Function, executed on start """# create applicationapp = QApplication (sys.argv) app.setApplicationName("fresh-examples") ...
This attribute must be set before QGuiApplication is constructed. This value was added in Qt 5.6. Qt::AA_DisableHighDpiScaling 21 Disables high-DPI scaling in Qt, exposing window system coordinates. Note that the window system may do its own scaling, so this does not guarantee that Q...
原因: "ifname== 'main':"没有顶格写 解决办法: "ifname== 'main':"代码段顶格写 if__name__=='__main__':app=QtWidgets.QApplication(sys.argv)MainWindow=QtWidgets.QMainWindow()# 创建窗体对象ui=Ui_MainWindow()ui.setupUi(MainWindow)MainWindow.show()sys.exit(app.exec_())...
See also QCoreApplication::postEvent().enum Qt::FillRuleSpecifies which method should be used to fill the paths and polygons.ConstantValueDescription Qt::OddEvenFill 0 Specifies that the region is filled using the odd even fill rule. With this rule, we determine whether a point is inside ...