Question

I have a form and a popup form as given below (partial code):

import sys
import subprocess
import os
from PyQt4 import QtCore, QtGui
from ui_auto import Ui_Form
from popup_ui import Ui_Form as fm

class MyPopupForm(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.ui = fm()
        self.ui.setupUi(self)
class MyForm(QtGui.QMainWindow):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.ui = Ui_Form()
        self.ui.setupUi(self)
    def when_pressed(self):
         self.mypopup=MyPopupForm()
         self.mypopup.show()
    def when_stopped(self):
         self.mypopup=MyPopupForm()
         self.mypopup.show()

Myform is my main form and MyPopupForm is the popup form. I need to do in such a way that, when I press a button it will print some string and display that string. When I press another button i have to invoke the same form but with different string. How could I do that (I used Qtdesigner to create UI)

MyPopupForm code in python:

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'popup.ui'
#
# Created: Sun Jan  8 11:18:43 2012
#      by: PyQt4 UI code generator 4.7.3
#
# WARNING! All changes made in this file will be lost!

from PyQt4 import QtCore, QtGui

class Ui_Form(object):
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(207, 170)
        self.pushButton = QtGui.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(60, 120, 92, 27))
        self.pushButton.setObjectName("pushButton")
        self.label = QtGui.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(58, 30, 81, 41))
        #self.label.setText("")
        self.label.setObjectName("label")

        self.retranslateUi(Form)
        QtCore.QObject.connect(self.pushButton, QtCore.SIGNAL("clicked()"), Form.close)
        QtCore.QMetaObject.connectSlotsByName(Form)

    def retranslateUi(self, Form):
        Form.setWindowTitle(QtGui.QApplication.translate("Form", "Form", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton.setText(QtGui.QApplication.translate("Form", "OK", None, QtGui.QApplication.UnicodeUTF8))

Answer 1

The simplest way is to add a parameter to the __init__ method of the class MyPopupForm

def __init__(self, string_to_be_passed=None, parent=None):

and then when you call it with

self.mypopup=MyPopupForm("value_to_display")

using the string_to_be_passed in the __init__ method to display the value.

Another method is to add a method to the class MyPopupForm to set the string to display and then

self.mypopup=MyPopupForm()
self.mypopup.setValueToDisplay("value")
self.mypopup.show()

with the setValueToDisplay() that display the string where needed.