Appendix A. Pop Quiz Answers

Chapter 3, Qt GUI Programming

Pop quiz – making signal-slot connections

Q1

A slot

Q2

connect(sender, SIGNAL(toggled(bool)), receiver, SLOT(clear())); and connect(sender, &QPushButton::clicked, receiver, &QLineEdit::clear);

Pop quiz – using widgets

Q1

sizeHint

Q2

QVariant

Q3

It represents a functionality that a user can invoke in the program.

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