如何創建一個窗口，用uic模塊打開另一個窗口？ Qt-Designer和Python

Question

當試圖用PyQt5和QT設計器開發一個GUI時，我遇到了一個問題。

我想用uic模塊，我有一個.ui文件名爲，另有login.ui，因爲我可以從login.ui打電話到registry.ui，通過點擊BUTTOM registro

我也有Login.py，Registro.py文件分別

我的目的是點擊註冊按鈕，打開註冊窗口

只使用uic.loadUI()方法？

在這裏，我表明我的代碼

類登錄 login.py

import sys 
import time 
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget 
from PyQt5 import uic 
import Con_pos 
from Registro import Registro 
class Login(QWidget): 

    def __init__(self): 
     QWidget.__init__(self) 
     uic.loadUi("Login.ui", self) 
     self.registro.clicked.connect(self.view_Registro) 
     self.ingresar.clicked.connect(self.autenticar) 

    def autenticar(self): 
     pid = self.getPID() 
     con = Con_pos.con_pos() 
     user = self.in_login.text() 
     password = self.in_pass.text() 
     print(password) 
     fecha = time.strftime("%X") + " " + time.strftime("%x") 
     if user != "" and password != "": 
      consulta = ''' SELECT "id_user" FROM "User" WHERE "id_user" = '%s' ; ''' %(user) 
      c_user = con.consulta(consulta) 
      print(c_user) 
      consulta = ''' SELECT "pass" FROM "User" WHERE "id_user" = '%s' ;''' %(user) 
      c_pass = con.consulta(consulta) 
      if c_user != None: 
       c_pass = c_pass[0] 
       print("test") 
       print(c_pass) 
       if c_pass == password: 
        consulta = ''' INSERT INTO "sesion" VALUES ('%s', '%s', '%s'); '''%(fecha ,pid, user) 
        con.insertar(consulta) 
    def getPID(self): 
     con = Con_pos.con_pos() 
     func = "pg_backend_pid" 
     pid = con.call_proc(func) 
     pid = pid[0][0] 
     return pid 

    def view_Registro(self): 
     reg = Registro.Registro() 
     reg.show() 

if __name__ == "__main__": 
    app = QApplication(sys.argv) 
    login = Login() 
    login.show() 
    sys.exit(app.exec()) 

類Registro： Registro.py

import sys 
import time 
from PyQt5.QtWidgets import QApplication, QMainWindow 
from PyQt5 import uic 
import Con_pos 
import error_log as error 

class Registro(QMainWindow): 
    con = Con_pos.con_pos() 
    def __init__(self): 
     QMainWindow.__init__(self) 
     uic.loadUi("Registro.ui", self) 
     self.btn_reg.clicked.connect(self.validar_nombre) 

    def validar_nombre(self): 
     fecha = time.strftime("%X") + " " + time.strftime("%x") 
     usuario = self.user_tx_input.text() 
     password = self.pass_tx_input.text() 
     if usuario != "": 
      pid = self.getPID() 
      consul = '''SELECT "id_user" FROM "User" WHERE "id_user" = '%s'; ''' % (usuario) 
      res_con = Registro.con.consulta(consul) 

      if not res_con: 
       ins_user = '''INSERT INTO "User" VALUES ('%s', '%s') ''' % (usuario, password) 
       ins_sesion = ''' INSERT INTO "sesion" VALUES ('%s', %s,'%s') ''' % (fecha, pid, usuario) 
       Registro.con.insertar(ins_user) 
       Registro.con.insertar(ins_sesion) 
      else: 
       err = error.error_dia() 
       err.etiqueta.setText("El usuario %s ya esta en uso" % (usuario)) 
       err.exec() 

    def getPID(self): 
     func = "pg_backend_pid" 
     pid = Registro.con.call_proc(func) 
     pid = pid[0][0] 
     return pid 

if __name__ == "__main__": 
    app = QApplication(sys.argv) 
    ventana = Registro() 
    ventana.show() 
    sys.exit(app.exec()) 

Answer 1

你要通過作爲父母相提並論ameter到新窗口，你可以做到這一點有兩種方式：

1. 第一個解決方案：使變量章類的屬性：

---

def view_Registro(self): 
    self.reg = Registro() 
    self.reg.show() 

第二種解決方案：作爲參數傳遞給同一實例：

---

def view_Registro(self): 
    reg = Registro(self) 
    reg.show() 

對於這個解決方案必須更改：

class Registro(QMainWindow): 
    con = Con_pos.con_pos() 
    def __init__(self): 
     QMainWindow.__init__(self) 

到

class Registro(QMainWindow): 
    con = Con_pos.con_pos() 
    def __init__(self, parent=None): 
     QMainWindow.__init__(self, parent=parent)