qt学习之各种对话框的实现

1 目的:实现1 颜色对话框

2  实现颜色标准对话框

3 实现字体标准对话框

4 实现标准输入对话框

5 实现标准消息对话框

6 实现自定义对话框

 代码实现

dialog.h

#ifndef DIALOG_H#define DIALOG_H#include <QDialog>#include <QFileDialog>#include <QColorDialog>#include <QFontDialog>#include <QInputDialog>#include <QMessageBox>#include <QPushButton>#include <QLineEdit>#include <QFrame>#include "inputdialog.h"#include "messagedialog.h"#include "customdialog.h"class Dialog : public QDialog{    Q_OBJECTpublic:    Dialog(QWidget *parent = 0);    ~Dialog();private:    QFileDialog *FileDialog;    QColorDialog *ColorDialog;    QFontDialog *FontDialog;    InputDialog *MInputDialog;    QMessageBox *MessageBox;    QPushButton *FilePushButton;    QPushButton *ColorPushButton;    QPushButton *FontPushButton;    QPushButton *InputButton;    QPushButton *MegButton;    QPushButton *CustomButton;    QLineEdit *FileLineEdit;    QFrame *ColorFrame;    QLineEdit *FontEditDialog;    MessageDialog *MyMessageDialog;private slots:    void showFileDialog();    void showColorDialog();    void showFontDialog();    void showInputDialog();    void showMsgDialog();    void showCustomDialog();};#endif // DIALOG_H

customdialog.h

#ifndef CUSTOMDIALOG_H

#define CUSTOMDIALOG_H

#include <QLabel>

#include <QFrame>

#include <QPicture>

#include <QPushButton>

#include <QDialog>

class CustomDialog : public QDialog

{

    Q_OBJECT

public:

    CustomDialog(QWidget *parent = 0);

private:

    QLabel *label;

    QPushButton *YesButton;

    QPushButton *NoButton;

    QPushButton *CancelButton;

    QFrame *photoFrame;

    QPicture *photoPicture;

    QLabel *photoLabel;

};

#endif // CUSTOMDIALOG_H

inputdialog.h

#ifndef INPUTDIALOG_H

#define INPUTDIALOG_H

#include <QDialog>

#include <QLabel>

#include <QLineEdit>

#include <QPushButton>

#include <QInputDialog>

#include <QLabel>

class InputDialog : public QDialog

{

    Q_OBJECT

public:

    InputDialog(QWidget *parent = 0);

private:

    QLabel *NameLabel;

    QLabel *SexLabel;

    QLabel *AgeLabel;

    QLabel *GreadLabel;

    QLabel *DNameLabel;

    QLabel *DAgeLabel;

    QLabel *DSexLabel;

    QLabel *DGreadLabel;

    QPushButton *NameButton;

    QPushButton *SexButton;

    QPushButton *AgeButton;

    QPushButton *GreadButton;

private slots:

    void alterName();

    void alterSex();

    void alterAge();

    void alterGread();

};

#endif // INPUTDIALOG_H

messagedialog.h

#ifndef MESSAGEDIALOG_H

#define MESSAGEDIALOG_H

#include <QDialog>

#include <QLabel>

#include <QLineEdit>

#include <QPushButton>

#include <QInputDialog>

#include <QLabel>

class MessageDialog : public QDialog

{

    Q_OBJECT

public:

    MessageDialog(QWidget *parent = 0);

private:

    QLabel *SelMsgBox;

    QPushButton  *QuestionMsg;

    QPushButton  *WarningMsg;

    QPushButton  *AboutMsg;

    QPushButton  *InformationMsg;

    QPushButton  *CriticalMsg;

    QPushButton  *AboutQtMsg;

private slots:

    void showQuestionMsg();

    void showWarningMsg();

    void showAboutMsg();

    void showInformationMsg();

    void showCriticalMsg();

    void showAboutQtMsg();

};

#endif // MESSAGEDIALOG_H

customdialog.cpp

#include "customdialog.h"

#include <QDialog>

#include <QHBoxLayout>

#include <QGridLayout>

#include <QMessageBox>

CustomDialog::CustomDialog(QWidget *parent)

    :QDialog(parent)

{

    label = new QLabel("this Custom MsgBox!");

    YesButton = new QPushButton("YES");

    NoButton = new QPushButton("NO");

    CancelButton = new QPushButton("CANCEL");

    photoLabel = new QLabel;

    this->setWindowTitle("CustomMsgBox");

    photoLabel->setPixmap(QPixmap("qt.jpg"));

    QHBoxLayout *bottonLayout = new QHBoxLayout;

    bottonLayout->addWidget(YesButton, 0);

    bottonLayout->addWidget(NoButton, 1);

    bottonLayout->addWidget(CancelButton, 2);

    QGridLayout *MainLayout = new QGridLayout(this);

    MainLayout->addWidget(photoLabel, 0, 0);

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

    MainLayout->addLayout(bottonLayout, 1, 0, 1, 1);

}

dialog.cpp

#include "dialog.h"

#include <QGridLayout>

#include <QFont>

Dialog::Dialog(QWidget *parent)

    : QDialog(parent)

{

    FileDialog = new QFileDialog(this, "open file dialog", "/", "yangsen(*.*)");//最后如果有多个则使用::比如:C++ Files(*.c++)::C Files(*.c)::HeadFiles(*.h)

    ColorDialog = new QColorDialog;

    FontDialog = new QFontDialog;

   // InputDialog = new QInputDialog;

    MessageBox = new QMessageBox;

    ColorFrame = new QFrame;

    ColorFrame->setFrameShape(QFrame::Box);//设置边框

    ColorFrame->setAutoFillBackground(true);//设置颜色自动更新

    //字体

    FontEditDialog = new QLineEdit("Welcome");

    FilePushButton = new QPushButton(QStringLiteral("文件标准对话框实例"));

    ColorPushButton = new QPushButton(QStringLiteral("颜色标准对话框实例"));

    FontPushButton = new QPushButton(QStringLiteral("字体标准对话框实例"));

    InputButton = new QPushButton(QStringLiteral("标准输入对话框实例"));

    MegButton = new QPushButton(QStringLiteral("标准消息对话框实例"));

    CustomButton = new QPushButton(QStringLiteral("自定义消息对话框"));

    FileLineEdit = new QLineEdit;

    MInputDialog = new InputDialog();

    MyMessageDialog = new MessageDialog();

    QGridLayout *MainLayout = new QGridLayout(this);

    MainLayout->addWidget(FilePushButton, 0, 0);

    MainLayout->addWidget(ColorPushButton,1, 0);

    MainLayout->addWidget(FontPushButton, 2, 0);

    MainLayout->addWidget(InputButton, 3, 0);

    MainLayout->addWidget(MegButton, 3, 1);

    MainLayout->addWidget(CustomButton, 4, 0);

    MainLayout->addWidget(FileLineEdit, 0, 1);

    MainLayout->addWidget(ColorFrame, 1, 1);

    MainLayout->addWidget(FontEditDialog, 2, 1);

   // MainLayout->addWidget(

    connect(FilePushButton, SIGNAL(clicked()), this, SLOT(showFileDialog()));

    connect(ColorPushButton, SIGNAL(clicked()), this, SLOT(showColorDialog()));

    connect(FontPushButton, SIGNAL(clicked()), this, SLOT(showFontDialog()));

    connect(InputButton, SIGNAL(clicked()), this, SLOT(showInputDialog()));

    connect(MegButton, SIGNAL(clicked()), this, SLOT(showMsgDialog()));

    connect(CustomButton, SIGNAL(clicked()), this, SLOT(showCustomDialog()));

}

void Dialog::showFileDialog()

{

    this->FileLineEdit->setText(FileDialog->getOpenFileName());

}

void Dialog::showColorDialog()

{

    QColor color = this->ColorDialog->getColor();

    if(color.isValid())

    {

        this->ColorFrame->setPalette(QPalette(color));

    }

}

void Dialog::showFontDialog()

{

    bool ok;

    QFont font = this->FontDialog->getFont(&ok);

    if(ok)

    {

        this->FontEditDialog->setFont(font);

    }

}

void Dialog::showInputDialog()

{

   // QString str = this->InputDialog->getText(this, "InputDialog", "Input:");

   // QMessageBox::question(this, "Mesage box", str, QMessageBox::NoButton);

    this->MInputDialog->show();

}

void Dialog::showMsgDialog()

{

    this->MyMessageDialog->show();

}

void Dialog::showCustomDialog()

{

    CustomDialog *customDialog = new CustomDialog;

    customDialog->show();

}

Dialog::~Dialog()

{

}

inputdialog.cpp

#include "inputdialog.h"

#include <QGridLayout>

#include <QInputDialog>

#include <QDebug>

InputDialog::InputDialog(QWidget *parent)

    : QDialog(parent)

{

    NameLabel = new QLabel(QStringLiteral("姓名"));

    SexLabel = new QLabel(QStringLiteral("性别"));

    AgeLabel = new QLabel(QStringLiteral("年龄"));

    GreadLabel = new QLabel(QStringLiteral("成绩"));

    DNameLabel = new QLabel;

    DAgeLabel = new QLabel;

    DSexLabel = new QLabel;

    DGreadLabel = new QLabel;

    DNameLabel->setFrameStyle(QFrame::Sunken|QFrame::Panel);

    DAgeLabel->setFrameStyle(QFrame::Sunken|QFrame::Panel);

    DSexLabel->setFrameStyle(QFrame::Sunken|QFrame::Panel);

    DGreadLabel->setFrameStyle(QFrame::Sunken|QFrame::Panel);

    NameButton  = new QPushButton(QStringLiteral("修改姓名"));

    SexButton  = new QPushButton(QStringLiteral("修改性别"));

    AgeButton  = new QPushButton(QStringLiteral("修改年龄"));

    GreadButton  = new QPushButton(QStringLiteral("修改成绩"));

    QGridLayout *MainLayout = new QGridLayout(this);

    MainLayout->addWidget(NameLabel, 0, 0);

    MainLayout->addWidget(SexLabel, 1, 0);

    MainLayout->addWidget(AgeLabel, 2, 0);

    MainLayout->addWidget(GreadLabel, 3, 0);

    MainLayout->addWidget(DNameLabel, 0, 1);

    MainLayout->addWidget(DSexLabel, 1, 1);

    MainLayout->addWidget(DAgeLabel, 2, 1);

    MainLayout->addWidget(DGreadLabel, 3, 1);

    MainLayout->addWidget(NameButton, 0, 2);

    MainLayout->addWidget(SexButton, 1, 2);

    MainLayout->addWidget(AgeButton, 2, 2);

    MainLayout->addWidget(GreadButton, 3, 2);

    connect(NameButton, SIGNAL(clicked()), this, SLOT(alterName()));

    connect(SexButton, SIGNAL(clicked()), this, SLOT(alterSex()));

    connect(AgeButton, SIGNAL(clicked()), this, SLOT(alterAge()));

    connect(GreadButton, SIGNAL(clicked()), this, SLOT(alterGread()));

}

void InputDialog::alterName()

{

    this->DNameLabel->setText(QInputDialog::getText(NULL, "InputTextDialog", "Name:"));

}

void InputDialog::alterSex()

{

    QStringList SexList;

    SexList << "man" << "woman";

    this->DSexLabel->setText(QInputDialog::getItem(NULL, "ComboxDialog", "SEX:", SexList, 0, false));

}

void InputDialog::alterAge()

{

    int age = QInputDialog::getInt(NULL, "IntDialog", "Age:", 0, 0, 200);

    QString strAge;

   // strAge = QString("%1").arg(age);

    //strAge

    strAge.sprintf("%d\0", age);

    this->DAgeLabel->setText(strAge);

}

void InputDialog::alterGread()

{

    float gread = QInputDialog::getDouble(NULL, "FloatDialog", "Gread:", 0);

    QString strGread;

    strGread.sprintf("%f\0", gread);

    this->DGreadLabel->setText(strGread);

}

messagedialog.cpp

#include "messagedialog.h"

#include <QDialog>

#include <QMessageBox>

#include <QGridLayout>

MessageDialog::MessageDialog(QWidget *parent)

    :QDialog(parent)

{

    SelMsgBox = new QLabel("list:");

    QuestionMsg = new QPushButton("QuestionMsg");

    WarningMsg = new QPushButton("WarningMsg");

    AboutMsg = new QPushButton("AboutMsg");

    InformationMsg = new QPushButton("InformationMsg");

    CriticalMsg = new QPushButton("CriticalMsg");

    AboutQtMsg = new QPushButton("AboutQtMsg");

    QGridLayout *MainLayout = new QGridLayout(this);

    MainLayout->addWidget(SelMsgBox, 0, 0, 0, 1);

    MainLayout->addWidget(QuestionMsg, 1, 0);

    MainLayout->addWidget(WarningMsg, 1, 1);

    MainLayout->addWidget(AboutMsg, 2, 0);

    MainLayout->addWidget(InformationMsg, 2, 1);

    MainLayout->addWidget(CriticalMsg, 3, 0);

    MainLayout->addWidget(AboutQtMsg, 3, 1);

    connect(QuestionMsg, SIGNAL(clicked()), this, SLOT(showQuestionMsg()));

    connect(WarningMsg, SIGNAL(clicked()), this, SLOT(showWarningMsg()));

    connect(AboutMsg, SIGNAL(clicked()), this, SLOT(showAboutMsg()));

    connect(InformationMsg, SIGNAL(clicked()), this, SLOT(showInformationMsg()));

    connect(CriticalMsg, SIGNAL(clicked()), this, SLOT(showCriticalMsg()));

    connect(AboutQtMsg, SIGNAL(clicked()), this, SLOT(showAboutQtMsg()));

}

void MessageDialog::showQuestionMsg()

{

    QMessageBox::question(NULL, "QuestionMsgBox", "you are pis?", QMessageBox::Yes, QMessageBox::No);

}

void MessageDialog::showWarningMsg()

{

    QMessageBox::warning(NULL, "WarningMsgBox", "there have pig!", QMessageBox::Yes);

}

void MessageDialog::showAboutMsg()

{

    QMessageBox::about(NULL, "AboutMsgBox", "i am superman!");

}

void MessageDialog::showInformationMsg()

{

    QMessageBox::information(NULL, "InforMationMsgBox", "this InformationMsgBox");

}

void MessageDialog::showCriticalMsg()

{

    QMessageBox::critical(NULL, "CriticalMsgBox", "this is Critical msg box!", QMessageBox::Yes, QMessageBox::No);

}

void MessageDialog::showAboutQtMsg()

{

    QMessageBox::aboutQt(NULL);

}

遇到问题有

1 汉字编码问题,试了各种方法依旧不能解决最后使用

QStringLiteral("文件标准对话框实例")解决了

2 图片加载问题,用360浏览器下载了一张图片始终不能加载,后面发现是图片问题,图片需要到画图里面进行打开再另存为才行.