Problem with QDockWidget

[Banjo]

Hello
I am new to QT and am having the following problem with a simple test application that I would appreciate a point in the right direction.

I have used the Designer to create the interface as follows:

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(QtCore.QSize(QtCore.QRect(0,0,800,600).size()).expandedTo(MainWindow.minimumSizeHint()))
 
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
 
        self.line = QtGui.QFrame(self.centralwidget)
        self.line.setGeometry(QtCore.QRect(663,50,20,481))
        self.line.setFrameShape(QtGui.QFrame.VLine)
        self.line.setFrameShadow(QtGui.QFrame.Sunken)
        self.line.setObjectName("line")
        MainWindow.setCentralWidget(self.centralwidget)
 
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0,0,800,21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
 
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)
 
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
 
    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(QtCore.QSize(QtCore.QRect(0,0,800,600).size()).expandedTo(MainWindow.minimumSizeHint()))

        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")

        self.line = QtGui.QFrame(self.centralwidget)
        self.line.setGeometry(QtCore.QRect(663,50,20,481))
        self.line.setFrameShape(QtGui.QFrame.VLine)
        self.line.setFrameShadow(QtGui.QFrame.Sunken)
        self.line.setObjectName("line")
        MainWindow.setCentralWidget(self.centralwidget)

        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0,0,800,21))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)

        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8))

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with the main file:

class MainWindow(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)       
        self.createDockWindows()
 
    def createDockWindows(self):
        dock1 = QDockWidget("Dock1", self)
        dock1.setAllowedAreas(Qt.RightDockWidgetArea)
        w = QLabel("Hello")
        dock1.setWidget(w)
        self.addDockWidget(Qt.RightDockWidgetArea, dock1)
 
def main():      
    app = QApplication(sys.argv)		    
    mainwindow = MainWindow()
    mainwindow.show()
    sys.exit(app.exec_())
 
main()

class MainWindow(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)       
        self.createDockWindows()
               
    def createDockWindows(self):
        dock1 = QDockWidget("Dock1", self)
        dock1.setAllowedAreas(Qt.RightDockWidgetArea)
        w = QLabel("Hello")
        dock1.setWidget(w)
        self.addDockWidget(Qt.RightDockWidgetArea, dock1)
                       
def main():      
    app = QApplication(sys.argv)		    
    mainwindow = MainWindow()
    mainwindow.show()
    sys.exit(app.exec_())
    
main()

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The problem that I have is that when the dockwidget is resized by the user, it just goes over the top of the main window. I have tried writing the interface manually and that works but I can't work out why using the designer is different - obviously some operator error but I can't work it out.

Thanks in advance

[wysota]

Can you provide the ui file?

[Banjo]

Hello

Here is the ui file

<ui version="4.0" >
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow" >
  <property name="geometry" >
   <rect>
    <x>0</x>
    <y>0</y>
    <width>800</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle" >
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget" >
   <widget class="Line" name="line" >
    <property name="geometry" >
     <rect>
      <x>663</x>
      <y>50</y>
      <width>20</width>
      <height>481</height>
     </rect>
    </property>
    <property name="orientation" >
     <enum>Qt::Vertical</enum>
    </property>
   </widget>
  </widget>
  <widget class="QMenuBar" name="menubar" >
   <property name="geometry" >
    <rect>
     <x>0</x>
     <y>0</y>
     <width>800</width>
     <height>21</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar" />
 </widget>
 <resources/>
 <connections/>
</ui>

<ui version="4.0" >
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow" >
  <property name="geometry" >
   <rect>
    <x>0</x>
    <y>0</y>
    <width>800</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle" >
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget" >
   <widget class="Line" name="line" >
    <property name="geometry" >
     <rect>
      <x>663</x>
      <y>50</y>
      <width>20</width>
      <height>481</height>
     </rect>
    </property>
    <property name="orientation" >
     <enum>Qt::Vertical</enum>
    </property>
   </widget>
  </widget>
  <widget class="QMenuBar" name="menubar" >
   <property name="geometry" >
    <rect>
     <x>0</x>
     <y>0</y>
     <width>800</width>
     <height>21</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar" />
 </widget>
 <resources/>
 <connections/>
</ui>

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Thanks again

[Banjo]

Hello
Sorry to sound impatient but is anyone able to give me a clue as to what I am doing wrong here? I thought I might have got widget parents wrong but that seems OK to me.

Thanks

[wysota]

Sorry for the delay. I see nothing wrong in your code. Could you post a screenshot of what you get and also state which version of Qt are you using?

[Banjo]

Hello
Sorry for taking a while to get back to you - Easter break.
I've attached two screen shots. The first - OpenApp shows how the application looks when it is first run. DockWidgetResized shows what happens when the dockWidget is resized to the left. The vertical line on the centralWidget is being obscured rather than moving across as the central widget is resized to accomodate the dockwidget resizing.

I am using Qt (PyQt) 4.3.1 on Windows.

Thanks again

[wysota]

Could you try a newer version of Qt? Like 4.3.4?

[Banjo]

Hello
I tried 4.3.3 (binary install) - latest PyQt - and there is no difference. I also created a new py file from the ui file with no obvious effect.
Thanks again

[Banjo]

Hello
Thanks Wysota for your help.
I added a grid layout to the central widget and it works fine now.