python多个对话框中超过了最大递归深度
python多个对话框中超过了最大递归深度
提问于 2018-07-15 20:56:40
# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtGui, QtCore
class Window_Test3(QtGui.QDialog):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
global progress_flag
**self.Next_Window = Window_Test1() # Return Window_Test1() but RuntimeError: maximum recursion depth exceeded**
self.setWindowFlags(QtCore.Qt.CustomizeWindowHint|QtCore.Qt.WindowTitleHint|QtCore.Qt.WindowMaximizeButtonHint)
self.setGeometry(0, 0, 800,480)
self.setWindowTitle('TEST PROCESSING')
quit = QtGui.QPushButton('Close', self)
quit.setGeometry(10, 10, 60, 35)
test = QtGui.QPushButton('TEST 3', self)
test.setGeometry(100, 200, 200, 100)
self.connect(quit, QtCore.SIGNAL('clicked()'),self.reject)
self.connect(test, QtCore.SIGNAL('clicked()'), self.nextWindow)
def nextWindow(self):
self.Next_Window.show()
class Window_Test2(QtGui.QDialog):
def __init__(self):
QtGui.QWidget.__init__(self)
global progress_flag
self.Window3 = Window_Test3()
self.setWindowFlags(QtCore.Qt.CustomizeWindowHint|QtCore.Qt.WindowTitleHint|QtCore.Qt.WindowMaximizeButtonHint)
self.setGeometry(0, 0, 800, 480)
self.setWindowTitle('TEST PROCESSING')
self.quit = QtGui.QPushButton('Close', self)
self.quit.setGeometry(10, 10, 60, 35)
test = QtGui.QPushButton('TEST 2', self)
test.setGeometry(250, 220, 200, 100)
self.connect(self.quit, QtCore.SIGNAL('clicked()'),self.reject)
self.connect(test, QtCore.SIGNAL('clicked()'),self.nextWindow)
def nextWindow(self):
self.Window3.show()
class Window_Test1(QtGui.QDialog):
def __init__(self):
QtGui.QWidget.__init__(self)
self.Window2 = Window_Test2()
self.setGeometry(0, 0, 800, 480)
self.setWindowTitle('TEST PROCESSING' )
test = QtGui.QPushButton('TEST', self)
test.setGeometry(100,100,100,100)
quit = QtGui.QPushButton('Close', self)
quit.setGeometry(10, 10, 60, 35)
self.connect(test, QtCore.SIGNAL('clicked()'),self.nextWindow)
self.connect(quit, QtCore.SIGNAL('clicked()'), self.reject)
def nextWindow(self):
self.Window2.show()
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
Window1 = Window_Test1()
Window1.show()
sys.exit(app.exec_())回答 3
Stack Overflow用户
回答已采纳
发布于 2018-07-16 00:40:35
为下一个窗口创建一个占位符self.next_Window，并在创建所有3个窗口后填充它
# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtGui, QtCore
class Window_Test3(QtGui.QDialog):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
global progress_flag
self.next_Window = None
self.setWindowFlags(QtCore.Qt.CustomizeWindowHint|
QtCore.Qt.WindowTitleHint|
QtCore.Qt.WindowMaximizeButtonHint)
self.setGeometry(0, 0, 800,480)
self.setWindowTitle('TEST PROCESSING')
quit = QtGui.QPushButton('Close', self)
quit.setGeometry(10, 10, 60, 35)
test = QtGui.QPushButton('TEST 3', self)
test.setGeometry(100, 200, 200, 100)
self.connect(quit, QtCore.SIGNAL('clicked()'),self.reject)
self.connect(test, QtCore.SIGNAL('clicked()'), self.nextWindow)
def nextWindow(self):
self.next_Window.show()
def setNextWindow(self, nextWindow):
self.next_Window = nextWindow
class Window_Test2(QtGui.QDialog):
def __init__(self):
QtGui.QWidget.__init__(self)
global progress_flag
self.next_Window = None
self.setWindowFlags(QtCore.Qt.CustomizeWindowHint|
QtCore.Qt.WindowTitleHint|
QtCore.Qt.WindowMaximizeButtonHint)
self.setGeometry(0, 0, 800, 480)
self.setWindowTitle('TEST PROCESSING')
self.quit = QtGui.QPushButton('Close', self)
self.quit.setGeometry(10, 10, 60, 35)
test = QtGui.QPushButton('TEST 2', self)
test.setGeometry(250, 220, 200, 100)
self.connect(self.quit, QtCore.SIGNAL('clicked()'),self.reject)
self.connect(test, QtCore.SIGNAL('clicked()'),self.nextWindow)
def nextWindow(self):
self.next_Window.show()
def setNextWindow(self, nextWindow):
self.next_Window = nextWindow
class Window_Test1(QtGui.QDialog):
def __init__(self):
QtGui.QWidget.__init__(self)
self.next_Window = None
self.setGeometry(0, 0, 800, 480)
self.setWindowTitle('TEST PROCESSING' )
test = QtGui.QPushButton('TEST', self)
test.setGeometry(100,100,100,100)
quit = QtGui.QPushButton('Close', self)
quit.setGeometry(10, 10, 60, 35)
self.connect(test, QtCore.SIGNAL('clicked()'),self.nextWindow)
self.connect(quit, QtCore.SIGNAL('clicked()'), self.reject)
def nextWindow(self):
self.next_Window.show()
def setNextWindow(self, nextWindow):
self.next_Window = nextWindow
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
Window1 = Window_Test1()
Window2 = Window_Test2()
Window3 = Window_Test3()
Window1.setNextWindow(Window2)
Window2.setNextWindow(Window3)
Window3.setNextWindow(Window1)
Window1.show()
sys.exit(app.exec_())Stack Overflow用户
发布于 2018-07-16 00:17:38
您的代码递归地初始化新对象。
Window_Test1调用Window_Test2，后者调用Window_Test3，后者调用Window_Test1，后者调用Window_Test2，后者调用Window_Test3，后者调用Window_Test1，后者...你说对了。
您可能希望将这些对象的初始化推迟到实际需要它们的时候(因此不是在__init__中)，或者可能需要引用所有三个窗口的单个实例。
Stack Overflow用户
发布于 2018-07-16 20:40:58
应该只有一个窗口，而不是三个。
def nextWindow (self):
self.next_Window.show()
self.actionEvent (self.reject ()) # Delete current screen
def setNextWindow (self, nextWindow):
self.next_Window = nextWindow也就是说，你加上self.actionEvent(self.reject ())，
输出一个屏幕。
但是，切换屏幕时会有轻微的抖动。
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原文链接：
https://stackoverflow.com/questions/51348599
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