Make qwidget in new window in PyQt4

Question

I'm trying to make a class that extends qwidget, that pops up a new window, I must be missing something fundamental,

class NewQuery(QtGui.QWidget): def __init__(self, parent): QtGui.QMainWindow.__init__(self,parent) self.setWindowTitle('Add New Query') grid = QtGui.QGridLayout() label = QtGui.QLabel('blah') grid.addWidget(label,0,0) self.setLayout(grid) self.resize(300,200)

when a new instance of this is made in main window's class, and show() called, the content is overlaid on the main window, how can I make it display in a new window?

Med Berdai · Accepted Answer · 2010-05-01 22:36:50Z

follow the advice that @ChristopheD gave you and try this instead

from PyQt4 import QtGui class NewQuery(QtGui.QWidget): def __init__(self, parent=None): super(NewQuery, self).__init__(parent) self.setWindowTitle('Add New Query') grid = QtGui.QGridLayout() label = QtGui.QLabel('blah') grid.addWidget(label,0,0) self.setLayout(grid) self.resize(300,200) app = QtGui.QApplication([]) mainform = NewQuery() mainform.show() newchildform = NewQuery() newchildform.show() app.exec_()

ChristopheD · Accepted Answer · 2010-05-01 22:11:01Z

Your superclass initialiser is wrong, you probably meant:

class NewQuery(QtGui.QWidget): def __init__(self, parent): QtGui.QWidget.__init__(self, parent)

(a reason to use super):

class NewQuery(QtGui.QWidget): def __init__(self, parent): super(NewQuery, self).__init__(parent)

But maybe you want inherit from QtGui.QDialog instead (that could be appropriate - hard to tell with the current context).

Also note that the indentation in your code example is wrong (a single space will work but 4 spaces or a single tab are considered nicer).

Yes, QDialog is what I needed, thank you. The single space must have been a problem with copying code over, I have tabs in the code :)

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