###
# BUG DECRIPTION:
# 1. put myQDockWidget0 over myQDockWidget1
# 2. press the button to make myQDockWidget0 as floating OR
#    take it from tab area to make it again floating
# 3. move myQDockWidget0 to see myQDockWidget1 
# 4. take myQDockWidget1 to make it 'floating'
# 5. docked it again in the same/another docking area
# 6. myQDockWidget0 should be erase and some error data should be sent. 
# 
# Nb. if step 4 is done using the button to make it flaoting, no error arise
###
if __name__ == "__main__":
    import sys
    from PyQt5.QtWidgets import * 
    from PyQt5.QtCore import * 
    from PyQt5.QtGui import *
    from sip import SIP_VERSION_STR

    """TODO"""
    class myQMainWindow( QMainWindow ):
        """TODO"""
        _DOCK_OPTS = QMainWindow.AnimatedDocks | \
                     QMainWindow.ForceTabbedDocks | \
                     QMainWindow.GroupedDragging

        """TODO"""
        def __init__(self, parent=None):
            QMainWindow.__init__(self, parent)
            self.setWindowTitle("Test resizing dockwidget")
            self.setDockOptions(self._DOCK_OPTS)

        """TODO"""
        def startQApp(self):
            self.main_widget = QWidget( self)
            self.main_widget.setStyleSheet("background-color: rgb(127,0,0);")
            self.setCentralWidget(self.main_widget)
            self.myQDockWidget0=QDockWidget()
            self.myQDockWidget0.setWindowTitle("QDockWidget #0")
            self.myQDockWidget0.setStyleSheet("background-color: rgb(0,127,0);")
            self.myQDockWidget1=QDockWidget()
            self.myQDockWidget1.setWindowTitle("QDockWidget #1")
            self.myQDockWidget1.setStyleSheet("background-color: rgb(0,0,127);")
            self.addDockWidget(Qt.BottomDockWidgetArea, self.myQDockWidget0)
            self.addDockWidget(Qt.RightDockWidgetArea, self.myQDockWidget1)
            self.show()
            self.raise_()
            return

    app = QApplication(sys.argv)
    main=myQMainWindow()
    print("Qt version:", QT_VERSION_STR)
    print("SIP version:", SIP_VERSION_STR)
    print("PyQt version:", PYQT_VERSION_STR)
    main.startQApp()
    sys.exit(app.exec_())