Qt Form and main.cpp communication -

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is a QT project with mainwindow (GUI application), how can I communicate with my main communication through my form

You can use the QT signal / slot functionality You can.

Example:

// on mainwindow.cpp. Pasted as a title on Delcare onButton () ButtonClicked on title zero () {++ myVar; } Connect (myButton, Signal (click) ()), this, slot (onButtonClicked ());

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