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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _getVirtualScreenRect(self):
 """ The virtual screen is the bounding box containing all monitors. Not all regions in the virtual screen are actually visible. The (0,0) coordinate is the top left corner of the primary screen rather than the whole bounding box, so some regions of the virtual screen may have negative coordinates if another screen is positioned in Windows as further to the left or above the primary screen. Returns the rect as (x, y, w, h) """

        SM_XVIRTUALSCREEN = 76  # Left of virtual screen
        SM_YVIRTUALSCREEN = 77  # Top of virtual screen
        SM_CXVIRTUALSCREEN = 78 # Width of virtual screen
        SM_CYVIRTUALSCREEN = 79 # Height of virtual screen

        return (self._user32.GetSystemMetrics(SM_XVIRTUALSCREEN), \
                self._user32.GetSystemMetrics(SM_YVIRTUALSCREEN), \
                self._user32.GetSystemMetrics(SM_CXVIRTUALSCREEN), \
                self._user32.GetSystemMetrics(SM_CYVIRTUALSCREEN))