我想知道如果在__init__
声明中满足某些条件,我如何才能阻止对话框打开。
以下代码尝试调用'self.close()'函数并且它确实如此,但是(我假设)由于对话框尚未开始其事件循环,它不会触发关闭事件?那么是否有另一种方法可以在不触发事件的情况下关闭和/或阻止对话框打开?
示例代码:
from PyQt4 import QtCore, QtGui
class dlg_closeInit(QtGui.QDialog):
'''
Close the dialog if a certain condition is met in the __init__ statement
'''
def __init__(self):
QtGui.QDialog.__init__(self)
self.txt_mytext = QtGui.QLineEdit('some text')
self.btn_accept = QtGui.QPushButton('Accept')
self.myLayout = QtGui.QVBoxLayout(self)
self.myLayout.addWidget(self.txt_mytext)
self.myLayout.addWidget(self.btn_accept)
self.setLayout(self.myLayout)
# Connect the button
self.connect(self.btn_accept,QtCore.SIGNAL('clicked()'), self.on_accept)
self.close()
def on_accept(self):
# Get the data...
self.mydata = self.txt_mytext.text()
self.accept()
def get_data(self):
return self.mydata
def closeEvent(self, event):
print 'Closing...'
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
dialog = dlg_closeInit()
if dialog.exec_():
print dialog.get_data()
else:
print "Failed"