Add PySide6 and shiboken6 support to helper functions.

Qt.py

@@ -738,12 +738,14 @@ def messageOutputHandler(*args):
     passObject = messageOutputHandler if handler else handler
     if Qt.IsPySide or Qt.IsPyQt4:
         return Qt._QtCore.qInstallMsgHandler(passObject)
-    elif Qt.IsPySide2 or Qt.IsPyQt5:
+    elif Qt.IsPySide2 or Qt.IsPyQt5 or Qt.IsPySide6:
         return Qt._QtCore.qInstallMessageHandler(passObject)
 
 
 def _getcpppointer(object):
-    if hasattr(Qt, "_shiboken2"):
+    if hasattr(Qt, "_shiboken6"):
+        return getattr(Qt, "_shiboken6").getCppPointer(object)[0]
+    elif hasattr(Qt, "_shiboken2"):
         return getattr(Qt, "_shiboken2").getCppPointer(object)[0]
     elif hasattr(Qt, "_shiboken"):
         return getattr(Qt, "_shiboken").getCppPointer(object)[0]
@@ -781,6 +783,8 @@ def _wrapinstance(ptr, base=None):
         func = getattr(Qt, "_sip").wrapinstance
     elif Qt.IsPySide2:
         func = getattr(Qt, "_shiboken2").wrapInstance
+    elif Qt.IsPySide6:
+        func = getattr(Qt, "_shiboken6").wrapInstance
     elif Qt.IsPySide:
         func = getattr(Qt, "_shiboken").wrapInstance
     else:
@@ -820,7 +824,10 @@ def _isvalid(object):
         object (QObject): QObject to check the validity of.
 
     """
-    if hasattr(Qt, "_shiboken2"):
+    if hasattr(Qt, "_shiboken6"):
+        return getattr(Qt, "_shiboken6").isValid(object)
+
+    elif hasattr(Qt, "_shiboken2"):
         return getattr(Qt, "_shiboken2").isValid(object)
 
     elif hasattr(Qt, "_shiboken"):
@@ -1968,6 +1975,7 @@ def _install():
 _install()
 
 # Setup Binding Enum states
+Qt.IsPySide6 = Qt.__binding__ == "PySide6"
 Qt.IsPySide2 = Qt.__binding__ == 'PySide2'
 Qt.IsPyQt5 = Qt.__binding__ == 'PyQt5'
 Qt.IsPySide = Qt.__binding__ == 'PySide'