QCombobox has 8 signals.

If you want to get signals, you must connect these to slots. But if you want to get one of these, enougt to connect one. I connected everyone just create example.

Qt Slot Argument

Slots are functions must be defined as “slot ” like this:

Slots and signals must have same parameters. Otherwise, the connection will not occur. Not only for connection, slot function must have same parameters with signal. For example, this sample doesn’t work:

Qt Signal Slot Different Parameters

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But it works:

Connections:

Slot Functions:

Qt Signals

Then it works:

Qt Slot Signal

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