- The old code used two QPushButtons in a QHBoxLayout to provide Ok/Cancel buttons. This hard-codes the positions and text (and icons) of these buttons, instead of adapting to the platform style. The new code simply uses QDialogButtonBox, which is designed for this purpose. - Also, the old code connected the Ok button's clicked() signal to a custom slot that then called QDialog::accept(). This means that the code in the custom slot is not executed when the dialog is accepted by other means (e.g. return press in one of the line edits ("auto-default"), though I'm not sure here). The new code uses the idiomatic Qt way of overriding QDialog::accept() instead, and connects the button-box's accepted() signal to it. This is done in the .ui file, so it already works in Designer preview. - Finally, the old code made a manual connection from the Cancel button to QDialog::reject(). The new code uses the Qt idiom of connecting in the .ui file directly, using QDialogButtonBox::rejected() as the signal. Amends 2690822428deec4f0c08f4d118d69a7c6036369e, which, however, inherited all of the above from even older code. Pick-to: 6.8 Change-Id: I83afd6156a0811e0c0f99f2480625ea6b69ff78b Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io> (cherry picked from commit 3419c299369ac1da94ba5710aaf5f5f65c38c33c) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
Qt is supplied with a number of example applications that have been written to provide developers with examples of the Qt API in use, highlight good programming practice, and showcase features found in each of Qt's core technologies. Documentation for examples can be found in the Examples section of the Qt documentation.