33 lines
893 B
Python
33 lines
893 B
Python
#!/usr/bin/env python
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'''
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（2）QML显式的调用Python函数，并有返回
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这个例子跟上一个相类似，只是这次调用Python的函数具有返回值功能。
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运行程序后，点击鼠标，左上角会显示数字30。
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'''
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from PyQt5.QtCore import QUrl, QObject, pyqtSlot
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from PyQt5.QtGui import QGuiApplication
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from PyQt5.QtQuick import QQuickView
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class MyClass(QObject):
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@pyqtSlot(int, result=str) # 声明为槽，输入参数为int类型，返回值为str类型
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def returnValue(self, value):
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return str(value+10)
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if __name__ == '__main__':
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path = 'test2.qml' # 加载的QML文件
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app = QGuiApplication([])
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con = MyClass()
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view = QQuickView()
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view.engine().quit.connect(app.quit)
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view.setSource(QUrl(path))
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context = view.rootContext()
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context.setContextProperty("con", con)
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view.show()
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app.exec_()
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