[PyQt] QObject::connect with Python/C API

[嶋崎一成]

It freeze when I try to run multiple times QObject::connect with Python/C
API

I want to create a GUI using pyqt on Python with Python/C API in Qt.
I want to run python code in PyRun_SimpleString() multiple times.

has the following code
    from PyQt5.QtCore import (QObject,Qt)
    from PyQt5.QtWidgets import
(QMainWindow,QWidget,QPushButton,QLabel,QSlider,QHBoxLayout)

    class CentralWidget(QWidget):
        def __init__(self, parent=None):
            super(CentralWidget, self).__init__(parent)
            self.param = "test"
            self.param_name_label = QLabel(self.param)

            self.reset_param_value_button = QPushButton("Reset")

self.reset_param_value_button.clicked.connect(self.reset_param_value)

            self.param_slider = QSlider(Qt.Horizontal)
            self.param_slider.setRange(-30,30)

            mlayout = QHBoxLayout(self)
            mlayout.addWidget(self.param_name_label)
            mlayout.addWidget(self.param_slider)
            mlayout.addWidget(self.reset_param_value_button)
            self.setLayout(mlayout)

        def reset_param_value(self):
            self.param_slider.setValue(0)

    class MainWindow(QMainWindow):
        def __init__(self, parent=None):
            super(MainWindow,self).__init__(parent)
            self.setCentralWidget(CentralWidget(self))

    if __name__ == "__main__":
        main_window = MainWindow()
        main_window.show()

This code is to create a GUI and connect.
To freeze when I try to run this code multiple times.
This code not worked in Windows8.1.
But, Windows7 worked.

after checking
・It freeze when QObject::connect run of the second time.(row:11)
・print()..etc in Python code, And not use QtObject::connect in python
code.  That is not freeze when I run multiple times.
・It not freeze when QObject::connect run of the first time.(row:11)
・If pc is Windows7, does not freeze QObject::connect run of the second time.
・If pc is Windows8.1, does freeze QObject::connect run of the second time.
・If pc is Windows8.1(compatibility mode (Windows7) and administrator), does
freeze QObject::connect run of the second time.

I want to solve this problem.
Would you please give me information.


Detailed environment of PC
Freeze : PC1,PC2
Not Freeze : PC3

PC1
===OS info===
platform : Windows-8-6.2.9200
processor : Intel64 Family 6 Model 70 Stepping 1, GenuineIntel
machine : AMD64
===Python Version info===
Qt : 5.4.1
sip : 4.16.6
PyQt : 5.4.1
Python: 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:16:31) [MSC v.1600 64
bit (AMD64)]

PC2
===OS info===
platform : Windows-8-6.2.9200
processor : Intel64 Family 6 Model 58 Stepping 9, GenuineIntel
machine : AMD64
===Python Version info===
Qt : 5.4.1
sip : 4.16.6
PyQt : 5.4.1
Python : 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:16:31) [MSC v.1600 64
bit (AMD64)]

PC3
===OS info===
platform : Windows-7-6.1.7601-SP1
processor : Intel64 Family 6 Model 42 Stepping 7, GenuineIntel
machine : AMD64
===Python Version info===
Qt : 5.4.1
sip : 4.16.6
PyQt : 5.4.1
Python : 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:16:31) [MSC v.1600 64
bit (AMD64)]

Best regards,
Thanks,
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