qt學習之各種對話方塊的實現

阿新 • • 發佈：2019-01-21

1 目的:實現1 顏色對話方塊

2 實現顏色標準對話方塊

3 實現字型標準對話方塊

4 實現標準輸入對話方塊

5 實現標準訊息對話方塊

6 實現自定義對話方塊

程式碼實現

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_OBJECT

public:
    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

#ifndefCUSTOMDIALOG_H

#defineCUSTOMDIALOG_H

#include<QLabel>

#include<QFrame>

#include<QPicture>

#include<QPushButton>

#include<QDialog>

classCustomDialog:publicQDialog

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

#ifndefINPUTDIALOG_H

#defineINPUTDIALOG_H

#include<QDialog>

#include<QLabel>

#include<QLineEdit>

#include<QPushButton>

#include<QInputDialog>

#include<QLabel>

classInputDialog:publicQDialog

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;

privateslots:

voidalterName();

voidalterSex();

voidalterAge();

voidalterGread();

};

#endif//INPUTDIALOG_H

messagedialog.h

#ifndefMESSAGEDIALOG_H

#defineMESSAGEDIALOG_H

#include<QDialog>

#include<QLabel>

#include<QLineEdit>

#include<QPushButton>

#include<QInputDialog>

#include<QLabel>

classMessageDialog:publicQDialog

Q_OBJECT

public:

MessageDialog(QWidget*parent=0);

private:

QLabel*SelMsgBox;

QPushButton*QuestionMsg;

QPushButton*WarningMsg;

QPushButton*AboutMsg;

QPushButton*InformationMsg;

QPushButton*CriticalMsg;

QPushButton*AboutQtMsg;

privateslots:

voidshowQuestionMsg();

voidshowWarningMsg();

voidshowAboutMsg();

voidshowInformationMsg();

voidshowCriticalMsg();

voidshowAboutQtMsg();

};

#endif//MESSAGEDIALOG_H

customdialog.cpp

#include"customdialog.h"

#include<QDialog>

#include<QHBoxLayout>

#include<QGridLayout>

#include<QMessageBox>

CustomDialog::CustomDialog(QWidget*parent)

:QDialog(parent)

label=newQLabel("thisCustomMsgBox!");

YesButton=newQPushButton("YES");

NoButton=newQPushButton("NO");

CancelButton=newQPushButton("CANCEL");

photoLabel=newQLabel;

this->setWindowTitle("CustomMsgBox");

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

QHBoxLayout*bottonLayout=newQHBoxLayout;

bottonLayout->addWidget(YesButton,0);

bottonLayout->addWidget(NoButton,1);

bottonLayout->addWidget(CancelButton,2);

QGridLayout*MainLayout=newQGridLayout(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=newQFileDialog(this,"openfiledialog","/","yangsen(*.*)");//最後如果有多個則使用::比如:C++Files(*.c++)::CFiles(*.c)::HeadFiles(*.h)

ColorDialog=newQColorDialog;

FontDialog=newQFontDialog;

//InputDialog=newQInputDialog;

MessageBox=newQMessageBox;

ColorFrame=newQFrame;

ColorFrame->setFrameShape(QFrame::Box);//設定邊框

ColorFrame->setAutoFillBackground(true);//設定顏色自動更新

//字型

FontEditDialog=newQLineEdit("Welcome");

FilePushButton=newQPushButton(QStringLiteral("檔案標準對話方塊例項"));

ColorPushButton=newQPushButton(QStringLiteral("顏色標準對話方塊例項"));

FontPushButton=newQPushButton(QStringLiteral("字型標準對話方塊例項"));

InputButton=newQPushButton(QStringLiteral("標準輸入對話方塊例項"));

MegButton=newQPushButton(QStringLiteral("標準訊息對話方塊例項"));

CustomButton=newQPushButton(QStringLiteral("自定義訊息對話方塊"));

FileLineEdit=newQLineEdit;

MInputDialog=newInputDialog();

MyMessageDialog=newMessageDialog();

QGridLayout*MainLayout=newQGridLayout(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()));

voidDialog::showFileDialog()

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

voidDialog::showColorDialog()

QColorcolor=this->ColorDialog->getColor();

if(color.isValid())

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

voidDialog::showFontDialog()

boolok;

QFontfont=this->FontDialog->getFont(&ok);

if(ok)

this->FontEditDialog->setFont(font);

voidDialog::showInputDialog()

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

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

this->MInputDialog->show();

voidDialog::showMsgDialog()

this->MyMessageDialog->show();

voidDialog::showCustomDialog()

CustomDialog*customDialog=newCustomDialog;

customDialog->show();

Dialog::~Dialog()

inputdialog.cpp

#include"inputdialog.h"

#include<QGridLayout>

#include<QInputDialog>

#include<QDebug>

InputDialog::InputDialog(QWidget*parent)

:QDialog(parent)

NameLabel=newQLabel(QStringLiteral("姓名"));

SexLabel=newQLabel(QStringLiteral("性別"));

AgeLabel=newQLabel(QStringLiteral("年齡"));

GreadLabel=newQLabel(QStringLiteral("成績"));

DNameLabel=newQLabel;

DAgeLabel=newQLabel;

DSexLabel=newQLabel;

DGreadLabel=newQLabel;

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=newQPushButton(QStringLiteral("修改姓名"));

SexButton=newQPushButton(QStringLiteral("修改性別"));

AgeButton=newQPushButton(QStringLiteral("修改年齡"));

GreadButton=newQPushButton(QStringLiteral("修改成績"));

QGridLayout*MainLayout=newQGridLayout(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()));

voidInputDialog::alterName()

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

voidInputDialog::alterSex()

QStringListSexList;

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

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

voidInputDialog::alterAge()

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

QStringstrAge;

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

//strAge

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

this->DAgeLabel->setText(strAge);

voidInputDialog::alterGread()

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

QStringstrGread;

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=newQLabel("list:");

QuestionMsg=newQPushButton("QuestionMsg");

WarningMsg=newQPushButton("WarningMsg");

AboutMsg=newQPushButton("AboutMsg");

InformationMsg=newQPushButton("InformationMsg");

CriticalMsg=newQPushButton("CriticalMsg");

AboutQtMsg=newQPushButton("AboutQtMsg");

QGridLayout*MainLayout=newQGridLayout(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()));

voidMessageDialog::showQuestionMsg()

QMessageBox::question(NULL,"QuestionMsgBox","youarepis?",QMessageBox::Yes,QMessageBox::No);

voidMessageDialog::showWarningMsg()

QMessageBox::warning(NULL,"WarningMsgBox","therehavepig!",QMessageBox::Yes);

voidMessageDialog::showAboutMsg()

QMessageBox::about(NULL,"AboutMsgBox","iamsuperman!");

voidMessageDialog::showInformationMsg()

QMessageBox::information(NULL,"InforMationMsgBox","thisInformationMsgBox");

voidMessageDialog::showCriticalMsg()

QMessageBox::critical(NULL,"CriticalMsgBox","thisisCriticalmsgbox!",QMessageBox::Yes,QMessageBox::No);

voidMessageDialog::showAboutQtMsg()

QMessageBox::aboutQt(NULL);

遇到問題有

1 漢字編碼問題,試了各種方法依舊不能解決最後使用

QStringLiteral("檔案標準對話方塊例項")解決了

2 圖片載入問題,用360瀏覽器下載了一張圖片始終不能載入,後面發現是圖片問題,圖片需要到畫圖裡面進行開啟再另存為才行.

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