PyQt：如何隐藏QMainWindow

将第一个窗口作为第二个窗口的父窗口：

class Dialog_02(QtGui.QMainWindow):    def __init__(self, parent):        super(Dialog_02, self).__init__(parent)        # ensure this window gets garbage-collected when closed        self.setAttribute(QtCore.Qt.WA_DeleteOnClose)    ...    def closeAndReturn(self):        self.close()        self.parent().show()class Dialog_01(QtGui.QMainWindow):    ...    def callAnotherQMainWindow(self):        self.hide()        self.dialog_02 = Dialog_02(self)        self.dialog_02.show()

如果您希望每次都显示相同的对话框，请执行以下操作：

    def callAnotherQMainWindow(self):        self.hide()        if not hassattr(self, 'dialog_02'): self.dialog_02 = Dialog_02(self)        self.dialog_02.show()

和

hide()