Question

我有一个gui申请

我将文字放入文本框1，文本框2，然后点击pushButton，
调用return_text_username ()中的函数moduel_b.py。现在我可以通过lambda1函数调用一个实例并在class_b中使用它，但是当我点击pushbutton时我无法调用两个时刻。

** A-我想在lineEdit_2中的lambda方法中添加main.py或在instance_lambda2_password方法中添加connect。

** B-我想在return_printtext_password (self, txt)中编辑moduel_b.py以打印并返回密码。

任何人都可以帮助我吗？这是代码：

main.py

# -*- coding: utf-8 -*-
from PyQt4 import QtCore, QtGui
import sys
from GUI import Ui_MainWindow
class MainWindow(QtGui.QMainWindow,Ui_MainWindow):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        from module_b import calss_b
        global instance_b
        instance_b=calss_b(self)
        instance_lambda1_username=lambda: instance_b.return_text_username(self.ui.lineEdit.text())##I want to add lineEdit_2 
        instance_lambda2_password=lambda: instance_b.printtext2(self.ui.lineEdit_2.text())
        QtCore.QObject.connect(self.ui.pushButton, QtCore.SIGNAL("clicked()"), \
        instance_lambda1_username)## Or add instance_lambda2_password here.


if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    global myapp
    myapp = MainWindow()
    myapp.show()
    sys.exit(app.exec_())

module_b.py

import sys
from GUI import Ui_MainWindow
from PyQt4 import QtCore, QtGui
class calss_b (object):
     def __init__(self, parent=None):
      pass


     def return_text_username (self, txt):
        username=unicode(txt) 
        print username  
        return username 

      ## I want print password and return it.   
     def return_printtext_password (self, txt):
        password=unicode(txt) 
        print password   
        return password

Answer 1

您不需要为每个lambda定义slot函数，而是将它们组合成一个并将其传递给connect方法，这样：

txt1 = self.ui.lineEdit.text #Method reference not Method call
txt2 = self.ui.lineEdit2.text 
mySlot = lambda : (instance_b.return_text_username(txt1()), instance_b.return_printtext_password(txt2()))# Passed to lambda method call this time
QtCore.QObject.connect(self.ui.pushButton, QtCore.SIGNAL("clicked()"),  mySlot)

对于Point-B，我认为你已经设法做到了，

 def return_text_username (self, txt):
     username=unicode(txt) 
     print username  
     return username

如何从主类调用GUI对象或更多对象

1 个答案: