The setAutoDefault function in the QPushButton class of C++ is used to automatically set a button as the default button when it is clicked. This means that when the user presses the Enter key, the button behaves as though it is clicked.
Example 1:
QPushButton *button = new QPushButton("Click me"); button->setAutoDefault(true); // This makes the button the default
In this example, a new QPushButton object is created with the label "Click me". The setAutoDefault function is then called on this object and sets the button as the default button.
Example 2:
QPushButton *okButton = new QPushButton("OK"); QPushButton *cancelButton = new QPushButton("Cancel"); okButton->setAutoDefault(true); // This makes the OK button the default
In this example, two new QPushButton objects are created with the labels "OK" and "Cancel". The setAutoDefault function is called only on the okButton object, which sets it as the default button.
The QPushButton class is part of the Qt library package of C++.
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