PyQt：setCentralWidget与QPushButton函数冲突

Question

所以我从我的项目中推断出这个问题，即从主窗口类中注入的Slides Widget类的setCentralWidget导致按钮的功能（即打开一个新的Widget窗口）主窗口根本不工作。

如果我删除setCentralWidget的按钮工作正常，所以不妥协的任何功能，我应该用什么方法呢？我应该使用不同形式的调用Slides Widget类吗？

任何帮助，将不胜感激，一如既往！谢谢！

from PyQt4 import QtCore, QtGui 
import sys 
from functools import partial 


class MainWindow(QtGui.QMainWindow): 
    def __init__(self, image_files, parent=None): 
     super(MainWindow, self).__init__() 

     self.setupUi(self) 
     self.slides_widget = Slides(image_files, self) 
#If you enable this down below, pushButton will not function 
#and instead the slideshow will pop up and function correctly 
     #self.setCentralWidget(self.slides_widget) 

    def setupUi(self, MainWindow): 

     MainWindow.resize(1278, 688) 
     #MainWindow.setStyleSheet(self.styledata) 

     self.groupBox = QtGui.QGroupBox(MainWindow) 
     self.groupBox.setGeometry(QtCore.QRect(490, 220, 120, 371)) 
     self.groupBox.setAlignment(QtCore.Qt.AlignHCenter|QtCore.Qt.AlignTop) 
     self.groupBox.setFlat(False) 
     self.groupBox.setCheckable(False) 


     self.pushButton_Desc = QtGui.QPushButton(self.groupBox) 
     self.pushButton_Desc.setGeometry(QtCore.QRect(20, 30, 71, 61)) 

     self.pushButton_Desc.clicked.connect(partial(self.DescWindow)) 

     self.groupBox.raise_() 

     self.NewWindow = QtGui.QWidget() 

    def DescWindow(self): 
     self.NewWindow.show(); 


class Slides(QtGui.QWidget): 
    def __init__(self, image_files, parent=None): 
     super(Slides, self).__init__(parent) 

     self.image_files = image_files 
     self.label = QtGui.QLabel("", self) 
     self.label.setGeometry(65, 225, 423, 363) 

     #buttons to rewind and forward 
     self.button = QtGui.QPushButton(". . .", self) 
     self.button.setGeometry(200, 100, 140, 30) 
     self.button.clicked.connect(self.timerEvent) 

     self.timer = QtCore.QBasicTimer() 
     self.step = 0 
     self.delay = 3000 #ms 

    def timerEvent(self, e=None): 
     if self.step >= len(self.image_files): 
      self.timer.start(self.delay, self) 
      self.step = 0 
      return 
     self.timer.start(self.delay, self) 
     file = self.image_files[self.step] 
     image = QtGui.QPixmap(file) 
     self.label.setPixmap(image) 
     #self.setWindowTitle("{} --> {}".format(str(self.step), file)) 
     self.step += 1 


image_files = ["images\slide1.jpg", "images\slide2.jpg", "images\slide3.jpg", 
"images\slide4.jpg", "images\slide5.jpg"] 

if __name__ == "__main__": 
    app = QtGui.QApplication(sys.argv) 
    Form = MainWindow(image_files) 
    Form.show() 
    sys.exit(app.exec_()) 

Answer 1

的问题的产生是因为首位按钮并在此被放置在CentralWidget，该解决方案是将在CentralWidget按钮，即，在幻灯片。

您必须更改：

def __init__(self, image_files, parent=None): 
    super(MainWindow, self).__init__() 
    self.setupUi(self) 
    self.slides_widget = Slides(image_files, self) 

到：

def __init__(self, image_files, parent=None): 
    super(MainWindow, self).__init__() 
    self.slides_widget = Slides(image_files, self) 
    self.setupUi(self) 

和

self.groupBox = QtGui.QGroupBox(MainWindow) 

到：

self.groupBox = QtGui.QGroupBox(MainWindow.slides_widget) 

有限公司mplete代码：

from PyQt4 import QtCore, QtGui 
import sys 


class MainWindow(QtGui.QMainWindow): 
    def __init__(self, image_files, parent=None): 
     super(MainWindow, self).__init__() 
     self.slides_widget = Slides(image_files, self) 
     self.setupUi(self) 

    def setupUi(self, MainWindow): 

     MainWindow.resize(1278, 688) 
     #MainWindow.setStyleSheet(self.styledata) 

     self.groupBox = QtGui.QGroupBox(MainWindow.slides_widget) 
     self.groupBox.setGeometry(QtCore.QRect(490, 220, 120, 371)) 
     self.groupBox.setAlignment(QtCore.Qt.AlignHCenter|QtCore.Qt.AlignTop) 
     self.groupBox.setFlat(False) 
     self.groupBox.setCheckable(False) 


     self.pushButton_Desc = QtGui.QPushButton(self.groupBox) 
     self.pushButton_Desc.setGeometry(QtCore.QRect(20, 30, 71, 61)) 

     self.pushButton_Desc.clicked.connect(self.DescWindow) 
     self.setCentralWidget(self.slides_widget) 

     self.groupBox.raise_() 

     self.NewWindow = QtGui.QWidget() 

    def DescWindow(self): 
     self.NewWindow.show(); 


class Slides(QtGui.QWidget): 
    def __init__(self, image_files, parent=None): 
     super(Slides, self).__init__(parent) 

     self.image_files = image_files 
     self.label = QtGui.QLabel("", self) 
     self.label.setGeometry(65, 225, 423, 363) 

     #buttons to rewind and forward 
     self.button = QtGui.QPushButton(". . .", self) 
     self.button.setGeometry(200, 100, 140, 30) 
     self.button.clicked.connect(self.timerEvent) 

     self.timer = QtCore.QBasicTimer() 
     self.step = 0 
     self.delay = 3000 #ms 

    def timerEvent(self, e=None): 
     if self.step >= len(self.image_files): 
      self.timer.start(self.delay, self) 
      self.step = 0 
      return 
     self.timer.start(self.delay, self) 
     file = self.image_files[self.step] 
     image = QtGui.QPixmap(file) 
     self.label.setPixmap(image) 
     #self.setWindowTitle("{} --> {}".format(str(self.step), file)) 
     self.step += 1 


image_files = ["images\slide1.jpg", "images\slide2.jpg", "images\slide3.jpg", 
"images\slide4.jpg", "images\slide5.jpg"] 

if __name__ == "__main__": 
    app = QtGui.QApplication(sys.argv) 
    Form = MainWindow(image_files) 
    Form.show() 
    sys.exit(app.exec_())