How to create widget with QDateEdit

Question

According to my understanding of QDateEdit's API documentation it creates a widget for editing dates. The only public members it has are constructors. So I basically created a QT widgets application using the QT creator and have added the following code. QTextStream cout(stdout); int main(int argc, char *argv[]) { QApplication a(argc, argv); QDate d1(2002,4,1) QDateEdit dateEdit(d1,0); return EXIT_SUCCESS; } Even though no error is given no widget/window appears either. What am I not getting? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

call the show method dateEdit.show(); this is required because QDateEdit is a widget, and is not going to be displayed by default... just do: QDateEdit dateEdit(d1,0); dateEdit.show(); edit: to your comment, additional question; Why doesn't a line like QString = InputDialog::getText(....) require the .show() well the function getText is calling that internally: documentation: https://doc.qt.io/archives/qt-4.8/qdialog.html#exec int QDialog::exec() Shows the dialog as a modal dialog, blocking until the user closes it. The function returns a DialogCode result. If the dialog is application modal, users cannot interact with any other window in the same application until they close the dialog. If the dialog is window modal, only interaction with the parent window is blocked while the dialog is open. By default, the dialog is application modal. See also open(), show(), result(), and setWindowModality(). source code: QString QInputDialog::getText(QWidget *parent, const QString &title, const QString &label, QLineEdit::EchoMode mode, const QString &text, bool *ok, Qt::WindowFlags flags, Qt::InputMethodHints inputMethodHints) { QAutoPointer dialog(new QInputDialog(parent, flags)); dialog->setWindowTitle(title); dialog->setLabelText(label); dialog->setTextValue(text); dialog->setTextEchoMode(mode); dialog->setInputMethodHints(inputMethodHints); const int ret = dialog->exec(); // <== here!!!! if (ok) *ok = !!ret; if (ret) { return dialog->textValue(); } else { return QString(); } }