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QT乱翻书-Spin

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

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

private slots:
    void on_btnCal_clicked(); //计算按键 clicked()响应

    void on_btnDec_clicked();//读十进制数再用其他进制显示 的按键的 clicked()响应

    void on_btnBin_clicked();//读二进制数再用其他进制显示 的按键的 clicked()响应

    void on_btnHex_clicked();//读十六进制数再用其他进制显示 的按键的 clicked()响应

private:
    Ui::Widget *ui;
};

#endif // WIDGET_H

/********************************************************************************
** Form generated from reading UI file 'widget.ui'
**
** Created by: Qt User Interface Compiler version 5.9.1
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/

#ifndef UI_WIDGET_H
#define UI_WIDGET_H

#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QDoubleSpinBox>
#include <QtWidgets/QGridLayout>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QLabel>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QSpacerItem>
#include <QtWidgets/QSpinBox>
#include <QtWidgets/QVBoxLayout>
#include <QtWidgets/QWidget>

QT_BEGIN_NAMESPACE

class Ui_Widget
{
public:
    QVBoxLayout *verticalLayout;
    QGridLayout *gridLayout;
    QLabel *label_3;
    QDoubleSpinBox *spinTotal;
    QSpinBox *spinNum;
    QDoubleSpinBox *spinPrice;
    QLabel *label_2;
    QLabel *label;
    QPushButton *btnCal;
    QSpacerItem *verticalSpacer;
    QGridLayout *gridLayout_2;
    QLabel *label_6;
    QLabel *label_7;
    QPushButton *btnBin;
    QLabel *label_8;
    QPushButton *btnDec;
    QPushButton *btnHex;
    QSpacerItem *horizontalSpacer_2;
    QSpinBox *spinDec;
    QSpinBox *spinBin;
    QSpinBox *spinHex;

    void setupUi(QWidget *Widget)
    {
        if (Widget->objectName().isEmpty())
            Widget->setObjectName(QStringLiteral("Widget"));
        Widget->resize(303, 172);
        QFont font;
        font.setFamily(QString::fromUtf8("\345\256\213\344\275\223"));
        font.setPointSize(10);
        Widget->setFont(font);
        verticalLayout = new QVBoxLayout(Widget);
        verticalLayout->setSpacing(6);
        verticalLayout->setContentsMargins(11, 11, 11, 11);
        verticalLayout->setObjectName(QStringLiteral("verticalLayout"));
        gridLayout = new QGridLayout();
        gridLayout->setSpacing(6);
        gridLayout->setObjectName(QStringLiteral("gridLayout"));
        label_3 = new QLabel(Widget);
        label_3->setObjectName(QStringLiteral("label_3"));
        label_3->setAlignment(Qt::AlignCenter);

        gridLayout->addWidget(label_3, 1, 2, 1, 1);

        spinTotal = new QDoubleSpinBox(Widget);
        spinTotal->setObjectName(QStringLiteral("spinTotal"));
        spinTotal->setMaximum(100000);

        gridLayout->addWidget(spinTotal, 1, 3, 1, 1);

        spinNum = new QSpinBox(Widget);
        spinNum->setObjectName(QStringLiteral("spinNum"));
        spinNum->setFrame(true);
        spinNum->setButtonSymbols(QAbstractSpinBox::UpDownArrows);
        spinNum->setProperty("showGroupSeparator", QVariant(false));
        spinNum->setMaximum(1000);
        spinNum->setValue(4);

        gridLayout->addWidget(spinNum, 0, 1, 1, 1);

        spinPrice = new QDoubleSpinBox(Widget);
        spinPrice->setObjectName(QStringLiteral("spinPrice"));
        spinPrice->setMinimumSize(QSize(90, 0));
        spinPrice->setMaximum(10000);
        spinPrice->setValue(12.43);

        gridLayout->addWidget(spinPrice, 0, 3, 1, 1);

        label_2 = new QLabel(Widget);
        label_2->setObjectName(QStringLiteral("label_2"));
        label_2->setAlignment(Qt::AlignCenter);

        gridLayout->addWidget(label_2, 0, 2, 1, 1);

        label = new QLabel(Widget);
        label->setObjectName(QStringLiteral("label"));
        label->setAlignment(Qt::AlignCenter);

        gridLayout->addWidget(label, 0, 0, 1, 1);

        btnCal = new QPushButton(Widget);
        btnCal->setObjectName(QStringLiteral("btnCal"));

        gridLayout->addWidget(btnCal, 1, 1, 1, 1);


        verticalLayout->addLayout(gridLayout);

        verticalSpacer = new QSpacerItem(20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding);

        verticalLayout->addItem(verticalSpacer);

        gridLayout_2 = new QGridLayout();
        gridLayout_2->setSpacing(6);
        gridLayout_2->setObjectName(QStringLiteral("gridLayout_2"));
        label_6 = new QLabel(Widget);
        label_6->setObjectName(QStringLiteral("label_6"));
        label_6->setMinimumSize(QSize(0, 0));
        label_6->setAlignment(Qt::AlignCenter);

        gridLayout_2->addWidget(label_6, 0, 0, 1, 1);

        label_7 = new QLabel(Widget);
        label_7->setObjectName(QStringLiteral("label_7"));
        label_7->setAlignment(Qt::AlignCenter);

        gridLayout_2->addWidget(label_7, 1, 0, 1, 1);

        btnBin = new QPushButton(Widget);
        btnBin->setObjectName(QStringLiteral("btnBin"));

        gridLayout_2->addWidget(btnBin, 1, 3, 1, 1);

        label_8 = new QLabel(Widget);
        label_8->setObjectName(QStringLiteral("label_8"));
        label_8->setAlignment(Qt::AlignCenter);

        gridLayout_2->addWidget(label_8, 2, 0, 1, 1);

        btnDec = new QPushButton(Widget);
        btnDec->setObjectName(QStringLiteral("btnDec"));

        gridLayout_2->addWidget(btnDec, 0, 3, 1, 1);

        btnHex = new QPushButton(Widget);
        btnHex->setObjectName(QStringLiteral("btnHex"));

        gridLayout_2->addWidget(btnHex, 2, 3, 1, 1);

        horizontalSpacer_2 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);

        gridLayout_2->addItem(horizontalSpacer_2, 1, 2, 1, 1);

        spinDec = new QSpinBox(Widget);
        spinDec->setObjectName(QStringLiteral("spinDec"));
        spinDec->setMinimumSize(QSize(100, 0));
        spinDec->setMaximum(255);
        spinDec->setValue(12);

        gridLayout_2->addWidget(spinDec, 0, 1, 1, 1);

        spinBin = new QSpinBox(Widget);
        spinBin->setObjectName(QStringLiteral("spinBin"));
        spinBin->setMaximum(255);
        spinBin->setDisplayIntegerBase(2);

        gridLayout_2->addWidget(spinBin, 1, 1, 1, 1);

        spinHex = new QSpinBox(Widget);
        spinHex->setObjectName(QStringLiteral("spinHex"));
        spinHex->setMaximum(255);
        spinHex->setValue(12);
        spinHex->setDisplayIntegerBase(16);

        gridLayout_2->addWidget(spinHex, 2, 1, 1, 1);


        verticalLayout->addLayout(gridLayout_2);


        retranslateUi(Widget);

        QMetaObject::connectSlotsByName(Widget);
    } // setupUi

    void retranslateUi(QWidget *Widget)
    {
        Widget->setWindowTitle(QApplication::translate("Widget", "SpinBox\346\265\213\350\257\225", Q_NULLPTR));
        label_3->setText(QApplication::translate("Widget", "\346\200\273 \344\273\267", Q_NULLPTR));
        spinTotal->setPrefix(QApplication::translate("Widget", "$ ", Q_NULLPTR));
        spinNum->setSuffix(QApplication::translate("Widget", " kg", Q_NULLPTR));
        spinPrice->setPrefix(QApplication::translate("Widget", "$ ", Q_NULLPTR));
        label_2->setText(QApplication::translate("Widget", "\345\215\225 \344\273\267", Q_NULLPTR));
        label->setText(QApplication::translate("Widget", "\346\225\260 \351\207\217", Q_NULLPTR));
        btnCal->setText(QApplication::translate("Widget", "\350\256\241\347\256\227", Q_NULLPTR));
        label_6->setText(QApplication::translate("Widget", "\345\215\201 \350\277\233 \345\210\266", Q_NULLPTR));
        label_7->setText(QApplication::translate("Widget", "\344\272\214 \350\277\233 \345\210\266", Q_NULLPTR));
        btnBin->setText(QApplication::translate("Widget", "\350\275\254\346\215\242\344\270\272\345\205\266\344\273\226\350\277\233\345\210\266", Q_NULLPTR));
        label_8->setText(QApplication::translate("Widget", "\345\215\201\345\205\255\350\277\233\345\210\266", Q_NULLPTR));
        btnDec->setText(QApplication::translate("Widget", "\350\275\254\346\215\242\344\270\272\345\205\266\344\273\226\350\277\233\345\210\266", Q_NULLPTR));
        btnHex->setText(QApplication::translate("Widget", "\350\275\254\346\215\242\344\270\272\345\205\266\344\273\226\350\277\233\345\210\266", Q_NULLPTR));
        spinDec->setSuffix(QString());
        spinDec->setPrefix(QApplication::translate("Widget", "Dec ", Q_NULLPTR));
        spinBin->setPrefix(QApplication::translate("Widget", "Bin ", Q_NULLPTR));
        spinHex->setPrefix(QApplication::translate("Widget", "Hex ", Q_NULLPTR));
    } // retranslateUi

};

namespace Ui {
    class Widget: public Ui_Widget {};
} // namespace Ui

QT_END_NAMESPACE

#endif // UI_WIDGET_H

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

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

    return a.exec();
}

#include    "widget.h"
#include    "ui_widget.h"
#include    <QString>

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
//“数量”和“单价”两个SpinBox的valueChanged()信号与on_btnCal_clicked()槽关联
    QObject::connect(ui->spinNum,SIGNAL(valueChanged(int)),this,SLOT(on_btnCal_clicked()));  //
    QObject::connect(ui->spinPrice,SIGNAL(valueChanged(double)),this,SLOT(on_btnCal_clicked()));

    QObject::connect(ui->spinDec,SIGNAL(valueChanged(int)),
                     this,SLOT(on_btnDec_clicked()));//spinDec 十进制显示的SpinBox

    QObject::connect(ui->spinBin,SIGNAL(valueChanged(int)),
                     this,SLOT(on_btnBin_clicked()));//spinBin 二进制显示的SpinBox

    QObject::connect(ui->spinHex,SIGNAL(valueChanged(int)),
                     this,SLOT(on_btnHex_clicked()));//spinHex 十六进制显示的SpinBox
}

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

void Widget::on_btnCal_clicked()
{ //计算按键
    int num=ui->spinNum->value(); //读取数量，直接是整数
    float price=ui->spinPrice->value();//读取单价，直接是浮点数
    float total=num*price;//相乘计算
    ui->spinTotal->setValue(total); //直接显示浮点数
}


void Widget::on_btnDec_clicked()
{ //读取十进制，以其他进制显示
    int val;
    val=ui->spinDec->value();//读取十进制数
    ui->spinBin->setValue(val); //设置数值即可，自动以二进制显示
    ui->spinHex->setValue(val); //设置数值即可，自动以十六进制显示
}

void Widget::on_btnBin_clicked()
{ //读取二进制，以其他进制显示
    int val=ui->spinBin->value();//读取spinBin里的二进制数，得到整数
    ui->spinDec->setValue(val);//设置数值即可，自动以十进制显示
    ui->spinHex->setValue(val);//设置数值即可，自动以十六进制显示
}

void Widget::on_btnHex_clicked()
{ //读取十六进制，以其他进制显示
    int val;
    val=ui->spinHex->value();//读取 spinHex 里的十六进制数，得到整数
    ui->spinDec->setValue(val);//设置数值即可，自动以十进制显示
    ui->spinBin->setValue(val);//设置数值即可，自动以二进制显示
}

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Widget</class>
 <widget class="QWidget" name="Widget">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>442</width>
    <height>238</height>
   </rect>
  </property>
  <property name="font">
   <font>
    <family>宋体</family>
    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
   <string>SpinBox测试</string>
  </property>
  <layout class="QVBoxLayout" name="verticalLayout">
   <item>
    <layout class="QGridLayout" name="gridLayout">
     <item row="1" column="2">
      <widget class="QLabel" name="label_3">
       <property name="text">
        <string>总 价</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
      </widget>
     </item>
     <item row="1" column="3">
      <widget class="QDoubleSpinBox" name="spinTotal">
       <property name="prefix">
        <string>$ </string>
       </property>
       <property name="maximum">
        <double>100000.000000000000000</double>
       </property>
      </widget>
     </item>
     <item row="0" column="1">
      <widget class="QSpinBox" name="spinNum">
       <property name="frame">
        <bool>true</bool>
       </property>
       <property name="buttonSymbols">
        <enum>QAbstractSpinBox::UpDownArrows</enum>
       </property>
       <property name="showGroupSeparator" stdset="0">
        <bool>false</bool>
       </property>
       <property name="suffix">
        <string> kg</string>
       </property>
       <property name="maximum">
        <number>1000</number>
       </property>
       <property name="value">
        <number>4</number>
       </property>
      </widget>
     </item>
     <item row="0" column="3">
      <widget class="QDoubleSpinBox" name="spinPrice">
       <property name="minimumSize">
        <size>
         <width>90</width>
         <height>0</height>
        </size>
       </property>
       <property name="prefix">
        <string>$ </string>
       </property>
       <property name="maximum">
        <double>10000.000000000000000</double>
       </property>
       <property name="value">
        <double>12.430000000000000</double>
       </property>
      </widget>
     </item>
     <item row="0" column="2">
      <widget class="QLabel" name="label_2">
       <property name="text">
        <string>单 价</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
      </widget>
     </item>
     <item row="0" column="0">
      <widget class="QLabel" name="label">
       <property name="text">
        <string>数 量</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
      </widget>
     </item>
     <item row="1" column="1">
      <widget class="QPushButton" name="btnCal">
       <property name="text">
        <string>计算</string>
       </property>
      </widget>
     </item>
    </layout>
   </item>
   <item>
    <spacer name="verticalSpacer">
     <property name="orientation">
      <enum>Qt::Vertical</enum>
     </property>
     <property name="sizeHint" stdset="0">
      <size>
       <width>20</width>
       <height>40</height>
      </size>
     </property>
    </spacer>
   </item>
   <item>
    <layout class="QGridLayout" name="gridLayout_2">
     <item row="0" column="0">
      <widget class="QLabel" name="label_6">
       <property name="minimumSize">
        <size>
         <width>0</width>
         <height>0</height>
        </size>
       </property>
       <property name="text">
        <string>十 进 制</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
      </widget>
     </item>
     <item row="1" column="0">
      <widget class="QLabel" name="label_7">
       <property name="text">
        <string>二 进 制</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
      </widget>
     </item>
     <item row="1" column="3">
      <widget class="QPushButton" name="btnBin">
       <property name="text">
        <string>转换为其他进制</string>
       </property>
      </widget>
     </item>
     <item row="2" column="0">
      <widget class="QLabel" name="label_8">
       <property name="text">
        <string>十六进制</string>
       </property>
       <property name="alignment">
        <set>Qt::AlignCenter</set>
       </property>
      </widget>
     </item>
     <item row="0" column="3">
      <widget class="QPushButton" name="btnDec">
       <property name="text">
        <string>转换为其他进制</string>
       </property>
      </widget>
     </item>
     <item row="2" column="3">
      <widget class="QPushButton" name="btnHex">
       <property name="text">
        <string>转换为其他进制</string>
       </property>
      </widget>
     </item>
     <item row="1" column="2">
      <spacer name="horizontalSpacer_2">
       <property name="orientation">
        <enum>Qt::Horizontal</enum>
       </property>
       <property name="sizeHint" stdset="0">
        <size>
         <width>40</width>
         <height>20</height>
        </size>
       </property>
      </spacer>
     </item>
     <item row="0" column="1">
      <widget class="QSpinBox" name="spinDec">
       <property name="minimumSize">
        <size>
         <width>100</width>
         <height>0</height>
        </size>
       </property>
       <property name="suffix">
        <string/>
       </property>
       <property name="prefix">
        <string>Dec </string>
       </property>
       <property name="maximum">
        <number>255</number>
       </property>
       <property name="value">
        <number>12</number>
       </property>
      </widget>
     </item>
     <item row="1" column="1">
      <widget class="QSpinBox" name="spinBin">
       <property name="prefix">
        <string>Bin </string>
       </property>
       <property name="maximum">
        <number>255</number>
       </property>
       <property name="displayIntegerBase">
        <number>2</number>
       </property>
      </widget>
     </item>
     <item row="2" column="1">
      <widget class="QSpinBox" name="spinHex">
       <property name="prefix">
        <string>Hex </string>
       </property>
       <property name="maximum">
        <number>255</number>
       </property>
       <property name="value">
        <number>12</number>
       </property>
       <property name="displayIntegerBase">
        <number>16</number>
       </property>
      </widget>
     </item>
    </layout>
   </item>
  </layout>
 </widget>
 <layoutdefault spacing="6" margin="11"/>
 <resources/>
 <connections/>
</ui>

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