Question

I’m trying make my first python app. I want make simple email sender form.
In qt designer create a dialog.ui, then generate dialog.py from dialog.ui
and write there function

def SendEmail(self,efrom,eto,esubj,ebody):
    msg = MIMEText( ebody.encode('UTF-8'),'html', 'UTF-8')
    msg['Subject'] = esubj
    msg['From'] = efrom
    msg['To'] = eto
    s = smtplib.SMTP()
    s.connect("mail.driversoft.net", 25)
    s.login("[e-mail]", "1234567")
    s.sendmail(efrom, [eto], msg.as_string())
    s.quit()

and try connect to the slot

QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.SendEmail("[e-mail]", "[e-mail]", "subject", "bodytext"))

when I try start this app, I don’t see a form, on my email revive message, and in console

Traceback (most recent call last):
File "C:\Documents and Settings\a.ivanov\My Documents\Aptana Studio Workspace\test1\src\wxtest.py", line 61, in <module>
ui.setupUi(Dialog)
File "C:\Documents and Settings\a.ivanov\My Documents\Aptana Studio Workspace\test1\src\wxtest.py", line 33, in setupUi
QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.SendEmail("[e-mail]", "[e-mail]", "subject", "bodytext"))
TypeError: arguments did not match any overloaded call:
QObject.connect(QObject, SIGNAL(), QObject, SLOT(), Qt.ConnectionType=Qt.AutoConnection): argument 3 has unexpected type 'NoneType'
QObject.connect(QObject, SIGNAL(), callable, Qt.ConnectionType=Qt.AutoConnection): argument 3 has unexpected type 'NoneType'
QObject.connect(QObject, SIGNAL(), SLOT(), Qt.ConnectionType=Qt.AutoConnection): argument 2 has unexpected type 'bytes'

How can I do a form i wich I wrote subject and text then press Send button and get message by email?
Thanks!

full code

from PyQt4 import QtCore, QtGui
import smtplib
from email.mime.text import MIMEText   

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(400, 330)
        self.textEdit = QtGui.QTextEdit(Dialog)
        self.textEdit.setGeometry(QtCore.QRect(10, 70, 381, 221))
        self.textEdit.setObjectName("textEdit")
        self.subjEdit = QtGui.QLineEdit(Dialog)
        self.subjEdit.setGeometry(QtCore.QRect(10, 30, 371, 20))
        self.subjEdit.setObjectName("subjEdit")
        self.pushButton = QtGui.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(100, 300, 75, 23))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtGui.QPushButton(Dialog)
        self.pushButton_2.setGeometry(QtCore.QRect(210, 300, 75, 23))
        self.pushButton_2.setObjectName("pushButton_2")
        self.label = QtGui.QLabel(Dialog)
        self.label.setGeometry(QtCore.QRect(10, 10, 46, 13))
        self.label.setObjectName("label")
        self.label_2 = QtGui.QLabel(Dialog)
        self.label_2.setGeometry(QtCore.QRect(11, 53, 46, 13))
        self.label_2.setObjectName("label_2")

        self.retranslateUi(Dialog)        
        QtCore.QObject.connect(self.pushButton_2, QtCore.SIGNAL("clicked()"), Dialog.close)        
        QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.SendEmail("[e-mail]", "[e-mail]", "subject", "bodytext"))
        QtCore.QMetaObject.connectSlotsByName(Dialog)

 #this is my function
    def SendEmail(self,efrom,eto,esubj,ebody):
        msg = MIMEText( ebody.encode('UTF-8'),'html', 'UTF-8')
        msg['Subject'] = esubj
        msg['From'] = efrom
        msg['To'] = eto
        s = smtplib.SMTP()
        s.connect("mail.driversoft.net", 25)
        s.login("[e-mail]", "1234567")
        s.sendmail(efrom, [eto], msg.as_string())
        s.quit()
        #print("done")

    def retranslateUi(self, Dialog):
        Dialog.setWindowTitle(QtGui.QApplication.translate("Dialog", "Dialog", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton.setText(QtGui.QApplication.translate("Dialog", "Send", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton_2.setText(QtGui.QApplication.translate("Dialog", "Close", None, QtGui.QApplication.UnicodeUTF8))
        self.label.setText(QtGui.QApplication.translate("Dialog", "Subject", None, QtGui.QApplication.UnicodeUTF8))
        self.label_2.setText(QtGui.QApplication.translate("Dialog", "Email text", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)    
    Dialog.show()
    sys.exit(app.exec_())

Answer 1

QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.SendEmail("[e-mail]", "[e-mail]", "subject", "bodytext"))

It is not how SIGNAL-SLOT system works. Your signal “clicked()” have no params — so Your slot must have no params too. And You must pass reference to callback, not call that function in connect.

QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), self.pushButtonClicked)

def pushButtonClicked(self):
    self.SendEmail("[e-mail]", "[e-mail]", "subject", "bodytext")