In my scenario, I want to show the assembly code and some other states of each threads. I hope that they can own their Dock Widgets which hold the thread states.

Here is an example code generated by ChatGPT

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QTabWidget, QTextBrowser, QDockWidget, QWidget, QVBoxLayout, QTextEdit

class ThreadView(QMainWindow):
    def __init__(self, parent=None):
        super(ThreadView, self).__init__(parent)

        # Create the central text browser
        self.textBrowser = QTextBrowser()
        self.setCentralWidget(self.textBrowser)

        # Create the left dock widget
        self.dockWidgetLeft = QDockWidget("Source Code", self)
        self.dockWidgetLeft.setAllowedAreas(Qt.LeftDockWidgetArea)
        self.sourceCodeEdit = QTextEdit()
        self.dockWidgetLeft.setWidget(self.sourceCodeEdit)
        self.addDockWidget(Qt.LeftDockWidgetArea, self.dockWidgetLeft)

        # Create the right dock widget
        self.dockWidgetRight = QDockWidget("GPR Values", self)
        self.dockWidgetRight.setAllowedAreas(Qt.RightDockWidgetArea)
        self.gprValuesEdit = QTextEdit()
        self.dockWidgetRight.setWidget(self.gprValuesEdit)
        self.addDockWidget(Qt.RightDockWidgetArea, self.dockWidgetRight)

        # Set initial text for demonstration
        self.textBrowser.setPlainText("Assembly code")
        self.sourceCodeEdit.setPlainText("Source code")
        self.gprValuesEdit.setPlainText("GPR values")

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Thread State Viewer")

        # Create a QTabWidget
        self.tabWidget = QTabWidget()
        self.setCentralWidget(self.tabWidget)

        # Add tabs for each thread
        for i in range(3):  # Example for 3 threads
            thread_view = ThreadView()
            self.tabWidget.addTab(thread_view, f"Thread {i+1}")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    main_window = MainWindow()
    main_window.resize(800, 600)
    main_window.show()
    sys.exit(app.exec_())

It shows the possibility to add a QMainWindow (class ThreadView here) into another widget (QTabWidget here). However, I can’t find any way to create a QMainWindow so I can put it into a tab widget. Is it possible to do that in QtDesigner5?