Easy Signal-Slot-Problem

[squidge]

Use QSignalMapper. You'll connect all your buttons to the mapper and give each one an Id. Then when the button is clicked, it will call your function with that Id as parameter.

[toutarrive]

QObject::connect(Level1, SIGNAL(clicked()), parent, SLOT(StartLevel()))

QObject::connect(Level1, SIGNAL(clicked()), parent, SLOT(StartLevel()))

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The signature of a signal must match the signature of the receiving slot.