import sys
from cx_Freeze import setup, Executable
base = None
icon_file = "icon\\USR6.ico"
buildOptions = dict(icon = icon_file)
if sys.platform == "win32":
    base = "Win32GUI"
setup(
        name = "main",
        version = "0.1",
        description = "Sample cx_Freeze PyQt4 script",
	options = dict(build_exe = buildOptions),
        executables = [Executable("TestIcon.py", base = base)])

import sys
import rc
from PyQt4 import QtGui
class Icon(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        
        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Icon')
        self.setWindowIcon(QtGui.QIcon(QtGui.QPixmap(":/USR616x16.ico")))
                           
if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    icon = Icon()
    icon.show()
    sys.exit(app.exec_())

app = QApplication(sys.argv)
ico = QIcon(':/icon.png')
app.setWindowIcon(ico)

app.setWindowIcon(QtGui.QIcon("qt_plugins/imageformats/1.png"))