getting value of a field from wizard

[user4592357]

i have a wizard with pages, and there's a combo box in one of pages, i register it using registerField(), then read the value of that field on accept() slot.

and somehow i get 1 instead of the actual string, for non empty inputs i get 1, for empty ones - 0.

notice i've set default property for that combo box in wizard subclass.

any idea why?

here's code for wizard.h

#pragma once

#include <QPushButton>
#include <QtWidgets/QWidget>
#include <QtWidgets/QComboBox>
#include <QWizard>
#include <QWizardPage>
#include <QHBoxLayout>
#include <QLabel>
#include <QFileDialog>

#include <QDebug>

class WizardPage : public QWizardPage
{
public:
	WizardPage(QWidget *p = nullptr) : QWizardPage(p)
	{
		_file_info_label = new QLabel();
		_file_combo_box = new QComboBox(this);
		_file_combo_box->addItem("");
		_file_combo_box->setEditable(true);

		browse_btn = new QPushButton(this);
		browse_btn->setMaximumWidth(30);
		connect(browse_btn, &QAbstractButton::clicked, this, &WizardPage::onClicked);

		auto input_layout = new QHBoxLayout();
		input_layout->addWidget(_file_combo_box);
		input_layout->addWidget(browse_btn);

		auto page_layout = new QVBoxLayout();
		page_layout->addWidget(_file_info_label);
		page_layout->addLayout(input_layout);

		setLayout(page_layout);
	}

public slots:
virtual void onClicked(){}

protected:
	QPushButton * browse_btn;
	QLabel * _file_info_label;
	QComboBox * _file_combo_box;
};

class FilePage : public WizardPage
{
public:
	FilePage(QWidget *p = nullptr) : WizardPage(p)
	{
		_file_info_label->setText("iNPUT:");
		registerField("file", _file_combo_box);
	}

public slots:
virtual void onClicked()
{
	auto path = QFileDialog::getExistingDirectory(this, "Open Directory");
	if (!path.isEmpty())
	{
		_file_combo_box->addItem(path);
		_file_combo_box->setCurrentIndex(
			_file_combo_box->count() - 1);
	}
}
};

class OutPage : public WizardPage
{
public:
	OutPage(QWidget *p = nullptr) : WizardPage(p)
	{
		_file_info_label->setText("output");
		registerField("aaa", _file_combo_box);
	}

	public slots:
	virtual void onClicked()
	{
	}
};

class Wiz : public QWizard
{
public:
	Wiz(QWidget *p = nullptr) : QWizard(p)
	{
		addPage(new FilePage);
		addPage(new OutPage);
                setDefaultProperty("QComboBox", "file", SIGNAL(currentTextChanged(const QString &)));
	}

	void accept()
	{
		QString a = field("file").toString();
		qDebug() << a;
	}
};

and main.cpp

#include <QApplication>
#include "wizard.h"


int main(int argc, char *argv[])
{
	QApplication app(argc, argv);

	auto pWizard = new Wiz;
	pWizard->show();

	return app.exec();
}

[Paul Colby]

Hi @user4592357,

somehow i get 1 instead of the actual string, for non empty inputs i get 1, for empty ones - 0.

registerField("file", _file_combo_box);

As per the QWizardPage::registerField() documentation:

QWizard knows the most common Qt widgets. For these (or their subclasses), you don't need to specify a property or a changedSignal. The table below lists these widgets:

Widget	   Property          Change Notification Signal
QComboBox  int currentIndex  currentIndexChanged()

So the property being chosen by default, is QComboBox::currentIndex. Sounds like you want to use the QComboBox::currentText property instead. Presumably (haven't tried) you can do:

registerField("file", _file_combo_box, "currentText", SIGNAL(currentTextChanged(QString)));

Note, I would guess that the Qt default is the index, because that is more reliable for things like internationalisation (just it case that's important to your application).

Cheers.