Hi All,
It seems that "cleanButton connect" stop to a new expression
evaluation in the following code ?
1/ If you comment this connection the program works again !!
2/ If you "reset" with the "cleanButton" something you wrote in the
QTextEdit, it cleans it !!
Any track ?
Simon
CODE
=====
from __future__ import division
import sys
from math import *
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class Ui_MainWindow(QDialog):
def __init__(self, parent=None):
super(Ui_MainWindow, self).__init__(parent)
self.browser = QTextEdit()
self.lineedit = QLineEdit("Enter an expression anf press
Enter")
self.lineedit.selectAll()
self.cleanButton = QPushButton("Reset")
layout = QVBoxLayout()
layout.addWidget(self.browser)
layout.addWidget(self.lineedit)
layout.addWidget(self.cleanButton)
self.setLayout(layout)
self.lineedit.setFocus()
self.setWindowTitle("Calculator")
#???????????????????????????????????????????
self.connect(self.cleanButton, SIGNAL("clicked()"),
self.clearForm)
#??????????????????????????????????????????
def clearForm(self):
self.browser.clear()
class App(object):
""" Run Calculator's GUI, main controller class (MAIN CONTROLER)"""
def __init__(self):
""" Creation of Calculator's GUI and connexion with user
events """
# Creation of the Calculator's GUI:
self.mainwindow = Ui_MainWindow()
self.mainwindow.connect(self.mainwindow.lineedit, SIGNAL
("returnPressed()"), self.updateUi)
def updateUi(self):
try:
text = unicode(self.mainwindow.lineedit.text())
self.mainwindow.browser.append("%s = <b>%s<b><br>" %
(text, eval(text)) )
self.mainwindow.lineedit.selectAll()
except:
self.mainwindow.browser.append(('<font color="red">%s is
wrong<font><br>' %text))
self.mainwindow.lineedit.selectAll()
if __name__ == "__main__":
app = QApplication(sys.argv)
# init GUI
calc = App()
# display of GUI
calc.mainwindow.show()
app.exec_()
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