PyQt 中的 QKeyPress 事件

问题描述

我的软件有问题.在我的钢琴软件中，如果我一直按键盘上的一个键，那么它会为该特定键发出多个重复的相同音调.但实际上我需要一个单一的音调，直到释放那个特定的键.我提供了检测 keyPress 事件并调用相应方法的代码的一部分.那么我应该对我的代码进行哪些更改?

I am having issues with my software. In my piano software if I keep pressing a key on the keyboard then it is making multiple repeated same tones of that particular key. But actually I need a single tone until the release of that particular key. I'm providing a part of my code that detects the keyPress event and calls the corresponding method. So what should be the changes that I've to do with my code??

def keyPressEvent(self, event):
    if type(event) == QtGui.QKeyEvent and event.key() == QtCore.Qt.Key_A : 
        self.Playnote('/home/hemanth/hemanth/Piano/C.mp3')
        self.ui.pushButton.animateClick(100)
    if type(event) == QtGui.QKeyEvent and event.key() == QtCore.Qt.Key_S:
        self.Playnote('/home/hemanth/hemanth/Piano/D.mp3')
        self.ui.pushButton_2.animateClick(100)

推荐答案

你应该检查 event.isAutoRepeat() 确定事件是由键盘自动重复还是实际按键引起的.如果是自动重复，请忽略该按.

You should check event.isAutoRepeat() to determine if the event is caused by keyboard autorepeat or an actual keypress. If it is an autorepeat, ignore that press.

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