Qt4 QSplashScreen单击即关闭

首先，我将描述我的目标：我想在阻塞模式下通知用户，有一些工作正在进行中

我希望如果我在QSplashScreen中禁用单击隐藏，这将符合我的需要。 在C++中，它使用MouthPrimeSevin方法：

void QSplashScreen::mousePressEvent(QMouseEvent *)

{
    hide();
}

所以我希望重写此方法将抑制隐藏，但我的代码不起作用：

from PyQt4 import QtGui, QtCore
import sys
import time

class MySplash(QtGui.QSplashScreen):
    def __init__(self):
        super(MySplash, self).__init__()
        self.setPixmap(QtGui.QPixmap("betting.gif"))

    def mousePressEvent(self, mouse_event):
        print('mousePressEvent', mouse_event)

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    splash = MySplash()
    splash.show()
    QtGui.qApp.processEvents()
    print('Here I am')
    splash.showMessage('Here I am')
    time.sleep(2)
    print('Do some work')
    time.sleep(2)
    splash.close()

---

我做错了什么？

我仍然不知道为什么重写mousePressEvent方法不起作用（我仍然感兴趣），但我用另一种方式解决了我的问题：

class BusyDialog(QtGui.QWidget):
    def __init__(self, parent = None):
        super(BusyDialog, self).__init__(parent)
        self.show()


class MainWindow(QtGui.QMainWindow):
    def __init__(self, parent = None):
        super(MainWindow, self).__init__(parent)
        self.button = QtGui.QPushButton('Click me', self)
        self.button.clicked.connect(self.button_clicked)

    def button_clicked(self):
        print('clicked')
        dialog = BusyDialog()
        QtGui.qApp.processEvents()
        time.sleep(2)
        print('Here I am')
        time.sleep(2)
        print('Do some work')
        time.sleep(2)
        dialog.close()


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

---

我最初问题的答案很简单：

mousePressEvent

被声明为受保护-这就是为什么不可能覆盖它

我发现的最简单的方法是利用pythons松散的函数指针

以下是我如何做到这一点（不必超负荷）

如果希望单击与其他对象通信，请将该方法添加到该对象，并将其设置为qsplashsscreen.mousePressEvent

class MyCommClass(QMainWindow,splashscreen,parent): ## mainwindow used here but it could be whatever

    def __init__(self,splashscreen = None,parent = None):  ## Create Mainwindow Obj
        QMainWindow.__init__(self,parent) ## Call base class CTOR
        if(splashscreen is not None):
            splashscreen.mousePressEvent = self.SplashMousePressEvent
        ##instead of splash.mousePressEvent = MyMousePressEvent

    def SplashMousePressEvent(self,event):
        print "Splash screen was clicked!"
        ## self.DoWhatEverIWant()

---

希望这对您有所帮助。

如果您继承了

qsplashsscreen

则没有任何东西可以阻止您在子类中重写/重新实现它。成员函数在

qsplashsscreen

中声明为虚拟受保护，即它被设计为被子类覆盖。

class MyCommClass(QMainWindow,splashscreen,parent): ## mainwindow used here but it could be whatever

    def __init__(self,splashscreen = None,parent = None):  ## Create Mainwindow Obj
        QMainWindow.__init__(self,parent) ## Call base class CTOR
        if(splashscreen is not None):
            splashscreen.mousePressEvent = self.SplashMousePressEvent
        ##instead of splash.mousePressEvent = MyMousePressEvent

    def SplashMousePressEvent(self,event):
        print "Splash screen was clicked!"
        ## self.DoWhatEverIWant()