[PyQt] wider window than screen width

[Peter Irbizon]

I tried to set window dimensions with self.resize(1450,250) more than is my
screen resolution (1280, 800). But it limits window width to max 1280.

Please,

How can I set window width wider than my screen width?

my code:

from PyQt4 import QtCore, QtGui, QtNetwork, QtWebKit
class MainWindow(QtGui.QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()

        self.view = QtWebKit.QWebView(self)

        self.setGeometry(3,30,800,800) # Position window
        self.resize(1450,250)  # Resize window

if __name__ == '__main__':
    import sys
    app = QtGui.QApplication(sys.argv)
    programwindow = MainWindow()
    programwindow.show()

    sys.exit(app.exec_())
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