Qt-3-Programul-calculator: Difference between revisions

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[[Image:PIC201431734365429.jpg|Calculator]]
{{Cleanup | reason=Auto-imported from ExpressionEngine.}}
 
[[Image:http://www.planet-source-code.com/Upload_PSC/ScreenShots/PIC201431734365429.jpg|Calculator]]


calculator3.cpp
calculator3.cpp
<code>#include "calculator3.h"
#include "ui_calculator3.h"
Calculator3::Calculator3(QWidget '''parent) :
QWidget(parent),
ui(new Ui::Calculator3)
{
ui->setupUi(this);
ui->comboBox->addItem("+", 0);
ui->comboBox->addItem("-", 1);
ui->comboBox->addItem("'''", 2);
ui->label_2->setNum(0);
ui->label_2->setStyleSheet("QLabel { background-color: white}");
ui->label_2->setMaximumWidth(25);
connect(ui->comboBox, SIGNAL (activated(QString)), this, SLOT (calculate(QString)));
connect(ui->spinBox, SIGNAL (valueChanged(int)), this, SLOT (update()));
connect(ui->spinBox_2, SIGNAL (valueChanged(int)), this, SLOT (update()));
}
void Calculator3::calculate(QString string){
if(string  "+"){
        ui->label_2->setNum(ui->spinBox->value() + ui->spinBox_2->value());
    }
    if(string  "-"){
ui->label_2->setNum(ui->spinBox->value() - ui->spinBox_2->value());
}
if(string == "'''"){
ui->label_2->setNum(ui->spinBox->value()''' ui->spinBox_2->value());
}
}
void Calculator3::update(){
if(ui->comboBox->currentIndex()0){
        ui->label_2->setNum(ui->spinBox->value() + ui->spinBox_2->value());
    }
    if(ui->comboBox->currentIndex()1){
ui->label_2->setNum(ui->spinBox->value() - ui->spinBox_2->value());
}
if(ui->comboBox->currentIndex()==2){
ui->label_2->setNum(ui->spinBox->value() * ui->spinBox_2->value());
}
}
Calculator3::~Calculator3()
{
delete ui;
}</code>


calculator3.h
calculator3.h
<code>#ifndef CALCULATOR3_H
#define CALCULATOR3_H
#include <QWidget>
#include <QSpinBox>
#include <QComboBox>
#include <QLabel>
namespace Ui {
class Calculator3;
}
class Calculator3 : public QWidget
{
Q_OBJECT
public:
explicit Calculator3(QWidget *parent = 0);
~Calculator3();
private:
Ui::Calculator3 *ui;
QSpinBox *spinBox;
QSpinBox *spinBox_2;
QComboBox *comboBox;
QLabel *label_2;
private slots:
void calculate(QString string);
void update();
};
#endif // CALCULATOR3_H
</code>


main.cpp
main.cpp
<code>#include "calculator3.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Calculator3 w;
w.show();
return a.exec();
}
</code>


calculator3.ui
calculator3.ui
<code><?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Calculator3</class>
<widget class="QWidget" name="Calculator3">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>Calculator3</string>
</property>
<widget class="QWidget" name="">
<property name="geometry">
<rect>
<x>20</x>
<y>30</y>
<width>351</width>
<height>29</height>
</rect>
</property>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QSpinBox" name="spinBox">
<property name="minimum">
<number>–999</number>
</property>
<property name="maximum">
<number>999</number>
</property>
</widget>
</item>
<item>
<widget class="QComboBox" name="comboBox"/>
</item>
<item>
<widget class="QSpinBox" name="spinBox_2">
<property name="minimum">
<number>–999</number>
</property>
<property name="maximum">
<number>999</number>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="label">
<property name="text">
<string>=</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="label_2">
<property name="text">
<string>TextLabel</string>
</property>
</widget>
</item>
</layout>
</widget>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>
</ui>

Latest revision as of 16:25, 3 March 2015

This article may require cleanup to meet the Qt Wiki's quality standards. Reason: Auto-imported from ExpressionEngine.
Please improve this article if you can. Remove the {{cleanup}} tag and add this page to Updated pages list after it's clean.

Calculator

calculator3.cpp

#include "calculator3.h"
#include "ui_calculator3.h"

Calculator3::Calculator3(QWidget '''parent) :
 QWidget(parent),
 ui(new Ui::Calculator3)
{
 ui->setupUi(this);

 ui->comboBox->addItem("+", 0);
 ui->comboBox->addItem("-", 1);
 ui->comboBox->addItem("'''", 2);

ui->label_2->setNum(0);
 ui->label_2->setStyleSheet("QLabel { background-color: white}");
 ui->label_2->setMaximumWidth(25);

connect(ui->comboBox, SIGNAL (activated(QString)), this, SLOT (calculate(QString)));
 connect(ui->spinBox, SIGNAL (valueChanged(int)), this, SLOT (update()));
 connect(ui->spinBox_2, SIGNAL (valueChanged(int)), this, SLOT (update()));

}

void Calculator3::calculate(QString string){
 if(string  "+"){
        ui->label_2->setNum(ui->spinBox->value() + ui->spinBox_2->value());
    }
    if(string  "-"){
 ui->label_2->setNum(ui->spinBox->value() - ui->spinBox_2->value());
 }
 if(string == "'''"){
 ui->label_2->setNum(ui->spinBox->value()''' ui->spinBox_2->value());
 }

}

void Calculator3::update(){
 if(ui->comboBox->currentIndex()0){
        ui->label_2->setNum(ui->spinBox->value() + ui->spinBox_2->value());
    }
    if(ui->comboBox->currentIndex()1){
 ui->label_2->setNum(ui->spinBox->value() - ui->spinBox_2->value());
 }
 if(ui->comboBox->currentIndex()==2){
 ui->label_2->setNum(ui->spinBox->value() * ui->spinBox_2->value());
 }
}

Calculator3::~Calculator3()
{
 delete ui;
}

calculator3.h

#ifndef CALCULATOR3_H
#define CALCULATOR3_H

#include <QWidget>
#include <QSpinBox>
#include <QComboBox>
#include <QLabel>

namespace Ui {
class Calculator3;
}

class Calculator3 : public QWidget
{
 Q_OBJECT

public:
 explicit Calculator3(QWidget *parent = 0);
 ~Calculator3();

private:
 Ui::Calculator3 *ui;
 QSpinBox *spinBox;
 QSpinBox *spinBox_2;
 QComboBox *comboBox;
 QLabel *label_2;

private slots:
 void calculate(QString string);
 void update();

};

#endif // CALCULATOR3_H

main.cpp

#include "calculator3.h"
#include <QApplication>

int main(int argc, char *argv[])
{
 QApplication a(argc, argv);
 Calculator3 w;
 w.show();

return a.exec();
}

calculator3.ui

<?xml version="1.0" encoding="UTF-8"?> <ui version="4.0">

<class>Calculator3</class>
<widget class="QWidget" name="Calculator3">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle">
<string>Calculator3</string>
</property>
<widget class="QWidget" name="">
<property name="geometry">
<rect>
<x>20</x>
<y>30</y>
<width>351</width>
<height>29</height>
</rect>
</property>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QSpinBox" name="spinBox">
<property name="minimum">
<number>–999</number>
</property>
<property name="maximum">
<number>999</number>
</property>
</widget>
</item>
<item>
<widget class="QComboBox" name="comboBox"/>
</item>
<item>
<widget class="QSpinBox" name="spinBox_2">
<property name="minimum">
<number>–999</number>
</property>
<property name="maximum">
<number>999</number>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="label">
<property name="text">
<string>=</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="label_2">
<property name="text">
<string>TextLabel</string>
</property>
</widget>
</item>
</layout>
</widget>
</widget>
<layoutdefault spacing="6" margin="11"/>
<resources/>
<connections/>

</ui>