Prepare example to run with no screen

example/example.py

@@ -41,6 +41,7 @@ problems.
 import logging
 import sys
 import argparse
+import os
 
 # make the example runnable without the need to install
 from os.path import abspath, dirname
@@ -70,6 +71,10 @@ def main():
     # set log for debug
     logging.basicConfig(level=logging.DEBUG)
 
+    # to avoid problems when testing without screen
+    if args.test:
+        os.environ['QT_QPA_PLATFORM']='offscreen'
+
     if args.qt_from == 'pyside':
         # using PySide wrapper
         from PySide.QtGui import QApplication, QMainWindow, QDockWidget
@@ -210,6 +215,9 @@ def main():
             window.resize(size)
             window.move(pos)
 
+
+
+
     # create the application
     app = QApplication(sys.argv)
     app.setOrganizationName('QDarkStyle')