信号连接数量
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4 changed files with 6 additions and 5 deletions
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@ -34,11 +34,11 @@ class Window(QWidget):
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def doTest(self):
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def doTest(self):
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self.retView.append("""
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self.retView.append("""
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# button1 clicked 是否连接: %s
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# button1 clicked 是否连接: %s, %s
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# button2 clicked 是否连接: %s
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# button2 clicked 是否连接: %s, %s
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""" % (
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""" % (
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self.isSignalConnected(self.button1, 'clicked()'),
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self.isSignalConnected(self.button1, 'clicked()'), self.button1.receivers(self.button1.clicked) > 0,
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self.isSignalConnected(self.button2, 'clicked()')
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self.isSignalConnected(self.button2, 'clicked()'), self.button2.receivers(self.button2.clicked) > 0,
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))
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))
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def isSignalConnected(self, obj, name):
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def isSignalConnected(self, obj, name):
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@ -204,7 +204,8 @@ PyQt 结合 Opencv 进行人脸检测;
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## 20、判断信号是否连接
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## 20、判断信号是否连接
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[运行 IsSignalConnected.py](IsSignalConnected.py)
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[运行 IsSignalConnected.py](IsSignalConnected.py)
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通过 `isSignalConnected` 判断是否连接
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1. 通过 `isSignalConnected` 判断是否连接
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2. 通过对象的 `receivers` 获取连接的数量来判断
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![IsSignalConnected](ScreenShot/IsSignalConnected.png)
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![IsSignalConnected](ScreenShot/IsSignalConnected.png)
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