code: def getScreenshotPropertyType(self, screenshotHandle):
          
  
          fn = self.function_table.getScreenshotPropertyType
          pError = EVRScreenshotError()
          result = fn(screenshotHandle, byref(pError))
          return result, pError
docs: When your application receives a
           VREvent_RequestScreenshot event, call these functions to get
           the details of the screenshot request.