Handle interruption signal in examples to make the app exit on Ctrl+C (in command-line)

example.py

@@ -1,6 +1,7 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 import os
+import signal
 
 from Qt import QtCore, QtGui, QtWidgets
 
@@ -134,6 +135,9 @@ def __init__(self):
 
 
 if __name__ == '__main__':
+    # handle SIGINT to make the app terminate on CTRL+C
+    signal.signal(signal.SIGINT, signal.SIG_DFL)
+
     QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
     app = QtWidgets.QApplication([])
 

example_auto_nodes.py

@@ -1,10 +1,12 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 from NodeGraphQt import NodeGraph, setup_context_menu, \
-    QtWidgets, QtCore, PropertiesBinWidget, BackdropNode
+     PropertiesBinWidget, BackdropNode
+from Qt import QtWidgets, QtCore
 from example_auto_nodes import Publish, RootNode, update_nodes, setup_node_menu
 import importlib
 import inspect
+import signal
 import sys
 import os
 
@@ -47,6 +49,9 @@ def get_published_nodes_from_folder(folder_path):
 
 
 if __name__ == '__main__':
+    # handle SIGINT to make the app terminate on CTRL+C
+    signal.signal(signal.SIGINT, signal.SIG_DFL)
+
     QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
     app = QtWidgets.QApplication()
 

example_math_nodes.py

@@ -1,5 +1,6 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
+import signal
 from Qt import QtWidgets, QtCore
 
 from NodeGraphQt import (NodeGraph,
@@ -11,6 +12,9 @@
 from os.path import join
 
 if __name__ == '__main__':
+    # handle SIGINT to make the app terminate on CTRL+C
+    signal.signal(signal.SIGINT, signal.SIG_DFL)
+
     QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
     app = QtWidgets.QApplication([])