启动画面后没有任务栏详细信息

Question

我面临的问题可能很“容易”，但我看不到解决方案

我有这个Python代码。

首先，我在加载设置，客户，销售等时打开QMainWindow作为启动屏幕。

但是当我关闭启动画面并打开主屏幕时，任务栏的详细信息就消失了！

这是代码：

from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.uic import loadUiType
import os
import sys
import time


class ThreadProgress(QThread):
    mysignal = pyqtSignal(int, str)

    def __init__(self, parent=None):
        QThread.__init__(self, parent)

    def run(self):
        i = 0
        while i < 102:
            time.sleep(0.02)
            self.mysignal.emit(i, "txt")
            i += 1


class Main(QMainWindow):
    def __init__(self, parent=None):
        super(Main, self).__init__(parent)
        self.Label = QLabel("Second Gui")
        self.mainLayout = QVBoxLayout()
        self.mainLayout.addWidget(self.Label)
        self.centralWidget = QWidget()
        self.centralWidget.setLayout(self.mainLayout)
        self.setCentralWidget(self.centralWidget)


class Splash(QMainWindow):
    def __init__(self, parent=None):
        super(Splash, self).__init__(parent)
        self.progressBar = QProgressBar()
        self.SubText = QLabel("test")
        self.mainLayout = QVBoxLayout()
        self.mainLayout.addWidget(self.progressBar)
        self.mainLayout.addWidget(self.SubText)
        self.centralWidget = QWidget()
        self.centralWidget.setLayout(self.mainLayout)
        self.setCentralWidget(self.centralWidget)
        progress = ThreadProgress(self)
        progress.mysignal.connect(self.progress)
        progress.start()

    @pyqtSlot(int, str)
    def progress(self, i, txt):
        if i == 101:
            self.close()
            self.setStyleSheet("")
            main = Main(self)
            main.show()
        self.progressBar.setValue(i)
        self.SubText.setText(txt)


def main():
    app = QApplication(sys.argv)
    splash = Splash()
    splash.show()
    app.exec_()


if __name__ == '__main__':
    try:
        main()
    except Exception as why:
        print(why)