PyQt Window Focus

Question

I am trying to give focus to a window if the user clicks on another window.

Right now i have two windows: Window A is behind, and Window B is in front. When Window B appears, it disables Window A. Now what i want is that whenever the user clicks outside of Window B, it should give focus back to Window B.

Here is the code for Window B:

class window_b(QtGui.QDialog):
    def __init__(self,parent=None):
        super(window_b, self).__init__(parent)
        window_a.setEnabled(False)
        self.ui = Ui_Form_window_b()
        self.ui.setupUi(self)
        self.setFocusPolicy(QtCore.Qt.StrongFocus)

    def focusOutEvent(self,event):
        self.setFocus(True)
        self.activateWindow()
        self.raise_()
        self.show()

I tried setFocus and activateWindow, but it didnt give focus back to Window B.

Any suggestions?

Would you like this behaviour with respect to all other windows or only to Window A. If you want the latter you could make Window B a modal window http://en.wikipedia.org/wiki/Modal_window. Window B then is a child of Window A which afterwards can't be focused as long as Window B is open. — halex, Sep 05 '12 at 12:37

score 14 · Answer 1 · edited Jan 03 '13 at 09:30

14

To get window_b to always stay on top you have to add the windowflag QtCore.Qt.WindowStaysOnTopHint. In your __init__ add the call

self.setWindowFlags(PyQt4.QtCore.Qt.WindowStaysOnTopHint)

I have to add that this only is a hint to the windowing manager and not guaranteed to succeed.

edited Jan 03 '13 at 09:30

Stephane Rolland

38,876
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answered Sep 05 '12 at 12:00

halex

16,253
5
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1

it works for me but it didnt give focus back to window_b now window_b remains always top but no focus . – Uahmed Sep 05 '12 at 12:05
@user1224233 Ah ok. I read *always in focus* but my brain made *always on top* of it :). Sorry – halex Sep 05 '12 at 12:12
any suggestion to give focus to window ? – Uahmed Sep 06 '12 at 12:30

score 8 · Answer 2 · 2013-01-03T23:11:00.543

self.raise_() followed by a self.activateWindow() should be the commands you are looking for, although there seems to be some kind of issues with that on my Debian OS, for example, if I click on a window that is maximized, the window will obtain focus, but it will also disappear, looks like some kind of bug, the sequence in the setTopLevelWindow method will circumvent that behaviour:

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import sip
sip.setapi('QString', 2)
sip.setapi('QVariant', 2)

from PyQt4 import QtGui, QtCore, QtWebKit, QtNetwork

class myWindow(QtGui.QMainWindow):
    def __init__(self, parent=None):
        super(myWindow, self).__init__(parent)

        self.button = QtGui.QPushButton(self)
        self.button.setText("Show Dialog")

        self.dialog = QtGui.QDialog(self)
        self.dialog.setFocusPolicy(QtCore.Qt.StrongFocus)
        self.dialog.installEventFilter(self)

        self.button.clicked.connect(self.dialog.show)

        self.setCentralWidget(self.button)

    def eventFilter(self, obj, event):
        if event.type() == QtCore.QEvent.WindowDeactivate:
            self.setTopLevelWindow()
            self.dialog.close()

            return True

        return False

    def setTopLevelWindow(self):    
        if self.windowState() != QtCore.Qt.WindowMaximized:
            self.showMaximized()
            self.showNormal()

        else:
            self.showNormal()
            self.showMaximized()

        self.raise_()
        self.activateWindow()


if __name__ == "__main__":
    import sys

    app = QtGui.QApplication(sys.argv)
    app.setApplicationName('myWindow')

    main = myWindow()
    main.show()

    sys.exit(app.exec_())

dudulu · Answer 3 · 2020-08-11T17:56:03.823

0

class window_b(QtGui.QDialog):
    def __init__(self,parent=None):
        super(window_b, self).__init__(parent)
        window_a.setEnabled(False)
        self.ui = Ui_Form_window_b()
        self.ui.setupUi(self)
        self.setWindowModality(QtCore.Qt.ApplicationModal)
        self.setFocusPolicy(QtCore.Qt.StrongFocus)

    def focusOutEvent(self,event):
        self.setFocus(True)
        self.activateWindow()
        self.raise_()
        self.show()

edited Aug 11 '20 at 17:56

answered Aug 11 '20 at 12:39

dudulu

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where in the code in the question do we need to put the line you posted for the problem in the question to be solved? – Ophir Carmi Aug 11 '20 at 13:48

score 0 · Answer 4 · answered Jul 17 '21 at 18:53

I found an easy trick there, just use self.showNormal() and it works, gives the focus back to the window, so it would be:

class window_b(QtGui.QDialog):
    def __init__(self,parent=None):
        super(window_b, self).__init__(parent)
        window_a.setEnabled(False)
        self.ui = Ui_Form_window_b()
        self.ui.setupUi(self)
        self.setFocusPolicy(QtCore.Qt.StrongFocus)

    def focusOutEvent(self,event):
        self.showNormal()

That's it! Have fun coding

PyQt Window Focus

4 Answers4

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