添加keyPressEvent到PyQt的

Question

我有一个现有的PyQt代码：

class MainWindow(QMainWindow, WindowMixin): 

    def __init__(self, filename=None): 
     super(MainWindow, self).__init__() 
     self.setWindowTitle(__appname__) 
    ... 
    def resizeEvent(self, event): 
    def queueEvent(self, event): 

我加了keyPressEvent：

def keyPressEvent(self, event): 
    print "pressed" 

事实证明，它只能接受当一些小部件我输入文本中的事件QMainWindow的。当图片具有焦点时，它不会生成按键事件。我该如何解决这个问题？

Answer 1

也许你SubWidget的（画面部件）也在等待着keyPressEvent，它不会传播到父？

class ParentWidget(...): 
    def keyPressEvent(self, event): 
     print "pressed" 

class ChildWidget(...): 
    def keyPressEvent(self, event): 
     if event.key() == QtCore.Qt.Key_<Some_key>: 
      ... 
     # Even if the pressed key is not <Some_key>, ParentWidget won't receive this event; 
     # for sending an event to the parent you must reject it: 
     else: 
      event.ignore()