qdialog执行后pyqt5托盘程序关闭

Question

from PyQt5.QtWidgets import QApplication, QMainWindow, QLabel, QGridLayout, QWidget, QCheckBox, QSystemTrayIcon, \
    QSpacerItem, QSizePolicy, QMenu, QAction, QStyle, qApp, QPushButton
from PyQt5.QtCore import QSize
from PyQt5 import QtWidgets


class MainWindow(QMainWindow):
    check_box = None
    tray_icon = None

    def __init__(self):

        QMainWindow.__init__(self)

        self.setMinimumSize(QSize(480, 80))
        self.setWindowTitle("System Tray Application")
        central_widget = QWidget(self)
        self.setCentralWidget(central_widget)

        grid_layout = QGridLayout(self)
        central_widget.setLayout(grid_layout)
        grid_layout.addWidget(QLabel("Application, which can minimize to Tray", self), 0, 0)

        self.check_box = QCheckBox('Minimize to Tray')
        grid_layout.addWidget(self.check_box, 1, 0)
        grid_layout.addItem(QSpacerItem(0, 0, QSizePolicy.Expanding, QSizePolicy.Expanding), 2, 0)

        self.btn = QPushButton('Dialog', self)
        grid_layout.addWidget(self.btn, 1, 1)
        self.btn.clicked.connect(self.dial_func)

        self.tray_icon = QSystemTrayIcon(self)
        self.tray_icon.setIcon(self.style().standardIcon(QStyle.SP_ComputerIcon))

        show_action = QAction("Show", self)
        quit_action = QAction("Exit", self)
        hide_action = QAction("Hide", self)
        dial = QAction('Dial', self)
        dial.triggered.connect(self.dial_func)
        show_action.triggered.connect(self.show)
        hide_action.triggered.connect(self.hide)
        quit_action.triggered.connect(qApp.quit)

        tray_menu = QMenu()
        tray_menu.addAction(show_action)
        tray_menu.addAction(hide_action)
        tray_menu.addAction(dial)
        tray_menu.addAction(quit_action)
        self.tray_icon.setContextMenu(tray_menu)
        self.tray_icon.show()

    def closeEvent(self, event):
        if self.check_box.isChecked():
            event.ignore()
            self.hide()
            self.tray_icon.showMessage(
                "Tray Program",
                "Application was minimized to Tray",
                QSystemTrayIcon.Information,
                2000
            )

    def dial_func(self):
        text, ok = QtWidgets.QInputDialog.getText(self, 'Input dialog', 'Enter your name')

        if ok:
            print('simple text', text)


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec())

我正在尝试编写一些用于诊断的小应用程序。应用程序应在托盘中运行，并具有从 QDialog 更改设置的选项。 使用此代码，我可以从 btn（在主窗口中）和 Dial（从 QMenu 中）运行对话框。如果程序不在托盘中，则一切正常，但如果程序在托盘中，则程序结束。有什么方法可以解决这个问题呢？

Answer 1

我认为在调用对话框窗口时，您需要调用节目功能。

def dial_func(self):
    self.show()
    text, ok = QtWidgets.QInputDialog.getText(
        self, 'Input dialog', 'Enter your name')

    if ok:
        print('simple text', text)

该解决方案将解决您的问题。