PyQt5中的MathJax闪烁和状态栏显示

from PyQt5.QtCore import QThread, pyqtSignal
from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel

class MathJaxLoader(QThread):
    loaded = pyqtSignal()
    error = pyqtSignal()

    def run(self):
        # 加载MathJax的代码
        # ...

        if 加载成功:
            self.loaded.emit()
        else:
            self.error.emit()

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        self.statusBar().showMessage("正在加载MathJax...")

        self.mathjax_loader = MathJaxLoader()
        self.mathjax_loader.loaded.connect(self.on_mathjax_loaded)
        self.mathjax_loader.error.connect(self.on_mathjax_error)
        self.mathjax_loader.start()

    def on_mathjax_loaded(self):
        self.statusBar().showMessage("MathJax加载完成")

    def on_mathjax_error(self):
        self.statusBar().showMessage("MathJax加载失败")

if __name__ == "__main__":
    app = QApplication([])
    window = MainWindow()
    window.show()
    app.exec_()