我是 python 的新手。我想在一个主窗口上创建具有多个 ui 的应用程序。
例如在主窗口
第一个用户界面:显示公司信息和一个按钮(下一步)。当用户点击“下一步”按钮时，转到第二个用户界面。
第二个用户界面:显示一些列表和两个按钮(下一步和返回)。当用户单击“下一步”时，转到第三个用户界面。当用户点击“返回”按钮时，返回第一个用户界面(关于公司信息)。
第三个用户界面:显示一些信息和两个按钮(下一步和返回)，当用户单击“下一步”时，转到第四个用户界面。当用户点击“返回”按钮时，返回到第二个用户界面(列表用户界面)。
我试过如下。但我不能。我该怎么办？
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class OtherWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
layout = QHBoxLayout()
lineEdit = QLineEdit()
lineEdit.setText("Just to fill up the dialog")
layout.addWidget(lineEdit)
button = QPushButton()
layout.addWidget(button)
self.widget = QWidget()
self.widget.setLayout(layout)
self.setCentralWidget(self.widget)
self.setWindowTitle("Win2")
self.connect(button, SIGNAL('clicked()'), self.newWindow)
def newWindow(self):
self.myOtherWindow = MainWindow()
self.myOtherWindow.show()
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
layout = QHBoxLayout()
button = QPushButton()
layout.addWidget(button)
self.widget = QWidget()
self.widget.setLayout(layout)
self.setCentralWidget(self.widget)
self.setWindowTitle("Win1")
self.connect(button, SIGNAL('clicked()'), self.newWindow)
def newWindow(self):
self.myOtherWindow = OtherWindow()
self.myOtherWindow.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
mainWindow = MainWindow()
mainWindow.setGeometry(100, 100, 200, 200)
mainWindow.show()
sys.exit(app.exec_())
请您参考如下方法:
我明白了。基于this .我修改如下。
import sys
from PyQt4 import QtGui,QtCore
class LayoutTest(QtGui.QWidget):
def __init__(self):
super(LayoutTest, self).__init__()
self.first_box = QtGui.QVBoxLayout()
self.second_box = QtGui.QVBoxLayout()
self.third_box = QtGui.QVBoxLayout()
self.fourth_box = QtGui.QVBoxLayout()
self.zvbox = QtGui.QVBoxLayout()
vbox = QtGui.QVBoxLayout()
vbox.addLayout(self.first_box)
vbox.addLayout(self.second_box)
vbox.addLayout(self.third_box)
vbox.addLayout(self.fourth_box)
self.setLayout(vbox)
self.first_view()
self.setGeometry(300, 200, 400, 300)
def keyPressEvent(self, event):
if event.key() == QtCore.Qt.Key_Escape:
self.close()
def first_view(self):
self.next1 = QtGui.QPushButton("NEXT 2")
self.first_box.addWidget(self.next1)
self.connect(self.next1, QtCore.SIGNAL("clicked()"), self.first_second_view)
def first_second_view(self):
self.remove_first_view()
self.second_view()
def second_view(self):
self.next3 = QtGui.QPushButton("NEXT 3")
self.back1 = QtGui.QPushButton("BACK 1")
self.second_box.addWidget(self.next3)
self.second_box.addWidget(self.back1)
self.connect(self.next3, QtCore.SIGNAL("clicked()"), self.second_third_view)
self.connect(self.back1, QtCore.SIGNAL("clicked()"), self.second_first_view)
def second_first_view(self):
self.remove_second_view()
self.first_view()
def second_third_view(self):
self.remove_second_view()
self.third_view()
def third_view(self):
self.next4 = QtGui.QPushButton("NEXT 4")
self.back2 = QtGui.QPushButton("BACK 2")
self.third_box.addWidget(self.next4)
self.third_box.addWidget(self.back2)
self.connect(self.next4, QtCore.SIGNAL("clicked()"), self.third_fourth_view)
self.connect(self.back2, QtCore.SIGNAL("clicked()"), self.third_second_view)
def third_second_view(self):
self.remove_third_view()
self.second_view()
def third_fourth_view(self):
self.remove_third_view()
self.back3 = QtGui.QPushButton("BACK 3")
self.fourth_box.addWidget(self.back3)
self.connect(self.back3, QtCore.SIGNAL("clicked()"), self.fourth_third_view)
def fourth_third_view(self):
self.remove_fourth_view()
self.third_view()
def remove_first_view(self):
for cnt in reversed(range(self.first_box.count())):
# takeAt does both the jobs of itemAt and removeWidget
# namely it removes an item and returns it
widget = self.first_box.takeAt(cnt).widget()
if widget is not None:
# widget will be None if the item is a layout
widget.deleteLater()
def remove_second_view(self):
for cnt in reversed(range(self.second_box.count())):
# takeAt does both the jobs of itemAt and removeWidget
# namely it removes an item and returns it
widget = self.second_box.takeAt(cnt).widget()
if widget is not None:
# widget will be None if the item is a layout
widget.deleteLater()
def remove_third_view(self):
for cnt in reversed(range(self.third_box.count())):
# takeAt does both the jobs of itemAt and removeWidget
# namely it removes an item and returns it
widget = self.third_box.takeAt(cnt).widget()
if widget is not None:
# widget will be None if the item is a layout
widget.deleteLater()
def remove_fourth_view(self):
for cnt in reversed(range(self.fourth_box.count())):
# takeAt does both the jobs of itemAt and removeWidget
# namely it removes an item and returns it
widget = self.fourth_box.takeAt(cnt).widget()
if widget is not None:
# widget will be None if the item is a layout
widget.deleteLater()
def checkItems(self):
QtGui.QMessageBox.information(self, 'Count',"You have %s Items in Layout" % self.dvbox.count(), QtGui.QMessageBox.Ok)
def run():
app = QtGui.QApplication(sys.argv)
ex = LayoutTest()
ex.show()
sys.exit(app.exec_())
if __name__ == "__main__":
run()
