Question

假设我有2个窗口，其中一个在菜单项上打开另一个窗口：

class ProjectWindow(QtWidgets.QMainWindow, project_window_qt.Ui_ProjectWindow):
    def __init__(self):
        super(ProjectWindow, self).__init__()

        # Setup the main window UI
        self.setupUi(self)
        self.new_project_window = None

        # Handle menu bar item click events
        self.actionNewProject.triggered.connect(self.new_project)

    def new_project(self):
        self.new_project_window = project_new_window.NewProjectWindow()
        self.new_project_window.show()

    def refresh_projects(self):
        with open(os.path.join(self.directory, 'projects.txt'), 'r') as f:
            projects = json.load(f)

        return projects

和

class NewProjectWindow(QtWidgets.QDialog, project_new_window_qt.Ui_NewProjectWindow):
    def __init__(self,):
        super(NewProjectWindow, self).__init__()

        # Setup the main window UI
        self.setupUi(self)

用户关闭new_project_window后，我希望在refresh_projects类中调用ProjectWindow方法。

我考虑过设置一个事件监听器来检查new_project_window何时关闭，然后在发生这种情况后调用refresh_projects，但窗口在打开后立即关闭：

def new_project(self):
    self.new_project_window = project_new_window.NewProjectWindow(self.directory, self.project_list)
    self.new_project_window.onClose.connect(self.refresh_projects)
    self.new_project_window.show()

这是正确的方法吗？或者有没有办法直接从refresh_projects对象中调用new_project_window？

Answer 1

如果您使用的是QDialog，则应调用exec_()而不是show（），这将在用户关闭窗口时返回一个值，然后只调用刷新项目。

def new_project(self):
    self.new_project_window = project_new_window.NewProjectWindow(self.directory, self.project_list)
    code = self.new_project_window.exec_()
    """code: gets the value of the QDialog.Accepted, or QDialog.Rejected 
    that you can connect it to some accept button
    using the accept() and reject() functions.
    """
    self.refresh_projects()

exec_()正在屏蔽，即除非QDialog已关闭，否则不会执行下一行。

其他窗口关闭时的Pyqt检查

1 个答案: