QML signal slot, call C ++ functions

QML signal slot, call C ++ functions qml signal slot A Connections object creates a connection to a QML signal When connecting to signals in QML, the usual way is to create an onSignal> handler that reacts qml slot Can connect signals to slots which have more arguments than the signal , Y ; Can connect C++ functions to QML functions, Y ; Selecting

qml slot Signals and slots are loosely coupled: A class which emits a signal neither knows nor cares which slots receive the signal Qt's signals and slots mechanism

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