2016-2018. same code, different result

[Anonymous]

2016 : 

python.execute("from PySide import QtGui, QtCore\
\nclass CustomCheckbox(QtGui.QWidget):\
\n\tdef __init__(self, parent=None):\
\n\t\tsuper(CustomCheckbox, self).__init__(parent=parent)\
\n\tdef paintEvent(self, event): \
\n\t\tpainter = QtGui.QPainter(self)\
\n\t\tbox = QtGui.QStyleOptionButton()\
\n\t\tbox.rect = QtCore.QRect(50, 50, 50, 50)\
\n\t\tbox.state = QtGui.QStyle.State_Enabled\
\n\t\tbox.state = QtGui.QStyle.State_Active\
\n\t\tbox.state = QtGui.QStyle.State_NoChange\
\n\t\tstyle = QtGui.QApplication.instance().style()\
\n\t\tstyle.drawControl(QtGui.QStyle.CE_CheckBox, box, painter)\
\nchk = CustomCheckbox()\
\nchk.show()")

2018 : 

python.execute("from PySide2 import QtWidgets, QtGui, QtCore\
\nclass CustomCheckbox(QtWidgets.QWidget):\
\n\tdef __init__(self, parent=None):\
\n\t\tsuper(CustomCheckbox, self).__init__(parent=parent)\
\n\tdef paintEvent(self, event): \
\n\t\tpainter  = QtGui.QPainter(self)\
\n\t\tbox = QtWidgets.QStyleOptionButton()\
\n\t\tbox.rect = QtCore.QRect(50, 50, 50, 50)\
\n\t\tbox.state = QtWidgets.QStyle.State_Enabled\
\n\t\tbox.state = QtWidgets.QStyle.State_Active\
\n\t\tbox.state = QtWidgets.QStyle.State_NoChange\
\n\t\tstyle = QtWidgets.QApplication.instance().style()\
\n\t\tstyle.drawControl(QtWidgets.QStyle.CE_CheckBox, box, painter)\
\nchk = CustomCheckbox()\
\nchk.show()")

[Anonymous]

Just to let you know that the problem is that the state State_NoChange does not show the checkbox tristate

[malcomarmstrong]

Well, its not exactly the same code. PySide and Pyside2 have some differences, so perhaps there is something in PySide2 that has been updated, omitted or changed between the versions, so there would be some difference in output.

[Anonymous]

I don't think this is Qt side.

I had the same problem with progress bars : https://forums.autodesk.com/t5/3ds-max-programming/css-error/m-p/8160806

I think Autodesk (and others) overrides the css after the load the QApplication.