def __init__(self, parent=None):
"""
Constructor
"""
QDialog.__init__(self, parent)
self.state = 0
self.posX = 0
self.posY = 0
self.posW = 0
self.posH = 0
self.setWindowFlags(Qt.Tool | Qt.FramelessWindowHint)
self.setWindowFlags(self.windowFlags() | Qt.WindowStaysOnTopHint)
# maximize window
screen = QDesktopWidget().screenGeometry()
self.setGeometry(screen)
# set cross cursor
self.setCursor(Qt.CursorShape(Qt.CrossCursor))
# display
self.show()
# create rubberband
self.rb = QRubberBand(QRubberBand.Rectangle)
self.rb.setWindowOpacity(0.4) # new in v18, to support pyqt5 properly
self.snapshotResult = None
layout = QVBoxLayout()
self.backgroundLabel = QLabel()
layout.addWidget(self.backgroundLabel)
layout.setContentsMargins(0, 0, 0, 0)
self.setLayout(layout)
