blob: 78d071e4ed5df084cc591ef9789ac9f1828950c9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
//! [0]
#include <QtUiTools>
//! [0]
#include <QApplication>
#include <QLabel>
#include <QSpinBox>
#include <QVBoxLayout>
#include <QFile>
#include <memory>
using namespace Qt::StringLiterals;
//! [1]
static QWidget *loadCalculatorForm(QWidget *parent = nullptr)
{
QUiLoader loader;
QFile file(u":/forms/calculatorform.ui"_s);
if (!file.open(QFile::ReadOnly))
return nullptr;
QWidget *formWidget = loader.load(&file, parent);
file.close();
if (formWidget == nullptr)
return nullptr;
//! [1]
//! [2]
auto *inputSpinBox1 = formWidget->findChild<QSpinBox*>(u"inputSpinBox1"_s);
auto *inputSpinBox2 = formWidget->findChild<QSpinBox*>(u"inputSpinBox2"_s);
auto *outputWidget = formWidget->findChild<QLabel*>(u"outputWidget"_s);
//! [2]
//! [3]
auto updateResult = [inputSpinBox1, inputSpinBox2, outputWidget]()
{
const int sum = inputSpinBox1->value() + inputSpinBox2->value();
outputWidget->setText(QString::number(sum));
};
QObject::connect(inputSpinBox1, &QSpinBox::valueChanged, formWidget, updateResult);
QObject::connect(inputSpinBox2, &QSpinBox::valueChanged, formWidget, updateResult);
//! [3]
return formWidget;
}
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QWidget w;
auto *formWidget = loadCalculatorForm(&w);
if (formWidget == nullptr)
return -1;
//! [4]
auto *layout = new QVBoxLayout(&w);
layout->addWidget(formWidget);
w.setWindowTitle(QCoreApplication::translate("CalculatorForm",
"Calculator Builder"));
//! [4]
w.show();
return app.exec();
}
|
