pyqt5mysql登录验证_使用PyQt5完成登陆进入主窗体

login.py

import sys

from PyQt5 import QtWidgets, QtCore

from PyQt5.QtWidgets import QMessageBox

import ui_login

import main

class frmLogin(QtWidgets.QWidget, ui_login.Ui_frmLogin):

def __init__(self):

super(frmLogin, self).__init__()

self.setupUi(self)

self.setWindowFlags(QtCore.Qt.WindowMinimizeButtonHint) #禁止最大化按钮

# 创建槽函数 槽函数直接使用元件的名称：on_元件名称_信号名称(槽装饰器, 区分参数)

@QtCore.pyqtSlot() #@QtCore.pyqtSlot(bool)

def on_btnLogin_clicked(self): #自动对应click

user = self.edtUser.text().strip()

passwd = self.edtPasswd.text().strip()

if user == "":

QMessageBox.warning(self,"警告","用户号不能为空，请输入！")

return

if passwd == "":

QMessageBox.warning(self,"警告","密码不能为空，请输入！")

return

if len(user) != 7:

QMessageBox.warning(self,"警告","用户号长度必须为7位！")

return

if len(passwd) < 6:

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