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from PyQt4 import QtGui, QtCore
from canvas import Canvas

class Window(QtGui.QMainWindow):
    def __init__(self, client):
        super(Window, self).__init__()
        self.canvas = Canvas(self, client)
        self.setCentralWidget(self.canvas)
        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('PyQt')
        self.show()

    def keyPressEvent(self, e):
        if e.key() == QtCore.Qt.Key_Escape:
            self.close()