【Qt5开发及实例】8、各种对话框！！

1、标准文件对话框

就是点击这个按钮就会打开文件的对话框

具体的实现是：

头文件dialog.h：

#include <QDialog>
#include <QLineEdit>
#include <QGridLayout>      //网格布局
#include <QPushButton>

#include <iostream>

#include "inputdlg.h"
#include "msgboxdlg.h"

using namespace std;

class Dialog : public QDialog
{
  Q_OBJECT

public:
  Dialog(QWidget *parent = 0);
  ~Dialog();

private:
  //打开文件的控件
  QPushButton *fileBtn;
  QLineEdit *fileLineEdit;
  QGridLayout *mainLayout;

private slots:    //这个是槽函数
  void showFile();    //打开文件

};

定义实现文件

dialog.cpp

#include "dialog.h"

#include <QFileDialog>
#include <QColorDialog>
#include <QMessageBox>

Dialog::Dialog(QWidget *parent)
  : QDialog(parent)     //构造函数
{
  setWindowTitle("各种标准对话框的实例");   //设置编码格式之后就可以使用中文了

  //文件控件
  fileBtn = new QPushButton;
  fileBtn->setText("wen件标准对话框实例");
  fileLineEdit = new QLineEdit;   //用来显示选择的文件名
  mainLayout = new QGridLayout(this);   //布局设计
  mainLayout->addWidget(fileBtn, 0, 0);
  mainLayout->addWidget(fileLineEdit, 0, 1);

  connect(fileBtn, SIGNAL(clicked()), this, SLOT(showFile()));    //事件关联
}





//显示文件相应
void Dialog::showFile()
{
  QString s = QFileDialog::getOpenFileName(this, "打开", "../ ", "C++ files(*.cpp;*.c;*.h)");    //第三个参数是打开的初始路径,这里我们设置为debug的前一个文件夹
  fileLineEdit->setText(s);
}

Dialog::~Dialog()
{

}

显示结果：

2、标准颜色对话框

显示：

头文件：

dialog.h

#include <QDialog>
#include <QLineEdit>
#include <QGridLayout>      //网格布局
#include <QPushButton>
#include <QFontDialog>

#include <iostream>

#include "inputdlg.h"
#include "msgboxdlg.h"

using namespace std;

class Dialog : public QDialog
{
  Q_OBJECT

public:
  Dialog(QWidget *parent = 0);
  ~Dialog();

private:
  //打开文件的控件
  QPushButton *fileBtn;
  QLineEdit *fileLineEdit;
  QGridLayout *mainLayout;
  //这个是标准颜色的控件
  QPushButton *colorBtn;
  QFrame *colorFrame;

private slots:    //这个是槽函数
  void showFile();    //打开文件
  void showColor();   //颜色的打开

};

dialog.cpp

#include "dialog.h"

#include <QFileDialog>
#include <QColorDialog>
#include <QMessageBox>

Dialog::Dialog(QWidget *parent)
  : QDialog(parent)     //构造函数
{
  setWindowTitle("各种标准对话框的实例");   //设置编码格式之后就可以使用中文了

  //文件控件
  fileBtn = new QPushButton;
  fileBtn->setText("wen件标准对话框实例");
  fileLineEdit = new QLineEdit;   //用来显示选择的文件名
  mainLayout = new QGridLayout(this);   //布局设计
  mainLayout->addWidget(fileBtn, 0, 0);
  mainLayout->addWidget(fileLineEdit, 0, 1);

  connect(fileBtn, SIGNAL(clicked()), this, SLOT(showFile()));    //事件关联

  //颜色部分
  colorBtn = new QPushButton;
  colorBtn->setText(tr("yan色标准对话框"));
  colorFrame = new QFrame;
  colorFrame->setFrameShape(QFrame::Box);
  colorFrame->setAutoFillBackground(true);
  mainLayout->addWidget(colorBtn, 1, 0);
  mainLayout->addWidget(colorFrame, 1, 1);

  connect(colorBtn, SIGNAL(clicked()), this, SLOT(showColor()));

}


//显示颜色
void Dialog::showColor()
{
  /*
   * getColor()函数是标准颜色对话框QColorDialog类的一个静态函数，该函数返回用户选择的颜色值，下面是getColor()函数形式：
   * QColor getColor
   * (
   * 	const QColor& initial=Qt::white,   	//注
   * 	QWidget* parent=0             		//标准颜色对话框的父窗口
   * );
    */
  QColor c = QColorDialog::getColor(Qt::blue);
  if(c.isValid())
    {
      colorFrame->setPalette(QPalette(c));    //这个得到选中的颜色显示出来
    }
}

//显示文件相应
void Dialog::showFile()
{
  QString s = QFileDialog::getOpenFileName(this, "打开", "../ ", "C++ files(*.cpp;*.c;*.h)");    //第三个参数是打开的初始路径,这里我们设置为debug的前一个文件夹
  fileLineEdit->setText(s);
}

Dialog::~Dialog()
{

}

结果：

3、标准字体对话框

显示：

dialog.h

#include <QDialog>
#include <QLineEdit>
#include <QGridLayout>      //网格布局
#include <QPushButton>
#include <QFontDialog>

#include <iostream>

#include "inputdlg.h"
#include "msgboxdlg.h"

using namespace std;

class Dialog : public QDialog
{
  Q_OBJECT

public:
  Dialog(QWidget *parent = 0);
  ~Dialog();

private:
  //打开文件的控件
  QPushButton *fileBtn;
  QLineEdit *fileLineEdit;
  QGridLayout *mainLayout;
  //这个是标准颜色的控件
  QPushButton *colorBtn;
  QFrame *colorFrame;
  //显示字体的控件
  QPushButton *fontBtn;
  QLineEdit *fontLineEdit;

private slots:    //这个是槽函数
  void showFile();    //打开文件
  void showColor();   //颜色的打开
  void showFont();    //显示字体

};

dialog.cpp

#include "dialog.h"

#include <QFileDialog>
#include <QColorDialog>
#include <QMessageBox>

Dialog::Dialog(QWidget *parent)
  : QDialog(parent)     //构造函数
{
  setWindowTitle("各种标准对话框的实例");   //设置编码格式之后就可以使用中文了

  //文件控件
  fileBtn = new QPushButton;
  fileBtn->setText("wen件标准对话框实例");
  fileLineEdit = new QLineEdit;   //用来显示选择的文件名
  mainLayout = new QGridLayout(this);   //布局设计
  mainLayout->addWidget(fileBtn, 0, 0);
  mainLayout->addWidget(fileLineEdit, 0, 1);

  connect(fileBtn, SIGNAL(clicked()), this, SLOT(showFile()));    //事件关联

  //颜色部分
  colorBtn = new QPushButton;
  colorBtn->setText(tr("yan色标准对话框"));
  colorFrame = new QFrame;
  colorFrame->setFrameShape(QFrame::Box);
  colorFrame->setAutoFillBackground(true);
  mainLayout->addWidget(colorBtn, 1, 0);
  mainLayout->addWidget(colorFrame, 1, 1);

  connect(colorBtn, SIGNAL(clicked()), this, SLOT(showColor()));

  //字体部分
  fontBtn = new QPushButton;
  fontBtn->setText(tr("zi体标准对话框实例"));
  fontLineEdit = new QLineEdit;   //显示更改的字符串
  fontLineEdit->setText(tr("cutter_point来啦!"));
  mainLayout->addWidget(fontBtn, 2, 0);
  mainLayout->addWidget(fontLineEdit, 2, 1);

  connect(fontBtn, SIGNAL(clicked()), this, SLOT(showFont()));

}


//显示字体选中
void Dialog::showFont()
{
  /*
   * QFont getFont
   * (
   * 	bool* ok,            		//注
   * 	QWidget* parent=0    	//标准字体对话框的父窗口
   * );
   */
  bool ok;    //参数
  cout<<ok<<"------------------sdasdasdasd"<<endl;
  QFont f = QFontDialog::getFont(&ok);
  cout<<ok<<"------------------sdasdasdasd"<<endl;
  if(ok)
  {
    fontLineEdit->setFont(f);
  }
}

//显示颜色
void Dialog::showColor()
{
  /*
   * getColor()函数是标准颜色对话框QColorDialog类的一个静态函数，该函数返回用户选择的颜色值，下面是getColor()函数形式：
   * QColor getColor
   * (
   * 	const QColor& initial=Qt::white,   	//注
   * 	QWidget* parent=0             		//标准颜色对话框的父窗口
   * );
    */
  QColor c = QColorDialog::getColor(Qt::blue);
  if(c.isValid())
    {
      colorFrame->setPalette(QPalette(c));    //这个得到选中的颜色显示出来
    }
}

//显示文件相应
void Dialog::showFile()
{
  QString s = QFileDialog::getOpenFileName(this, "打开", "../ ", "C++ files(*.cpp;*.c;*.h)");    //第三个参数是打开的初始路径,这里我们设置为debug的前一个文件夹
  fileLineEdit->setText(s);
}

Dialog::~Dialog()
{

}

结果：

4、标准输入对话框类

inputdlg.h

#include <QLabel>
#include <QPushButton>
#include <QGridLayout>
#include <QDialog>
#include <QWidget>

class InputDlg : public QDialog
{
  Q_OBJECT

public:
  //构造函数
  InputDlg(QWidget* parent = 0);
private slots:    //对应的槽函数
  void ChangeName();    //改变名字
  void ChangeSex();
  void ChangeAge();
  void ChangeScore();
private:    //私有成员，一般控件都定义为私有成员
  //标签
  QLabel *nameLabel1;
  QLabel *sexLabel1;
  QLabel *ageLabel1;
  QLabel *scoreLabel1;
  QLabel *nameLabel2;
  QLabel *sexLabel2;
  QLabel *ageLabel2;
  QLabel *scoreLabel2;
  //按钮
  QPushButton *nameBtn;
  QPushButton *sexBtn;
  QPushButton *ageBtn;
  QPushButton *scoreBtn;
 //布局管理 网格布局
  QGridLayout *mainLayout;

};

inputdlg.cpp

#include "inputdlg.h"
#include <QInputDialog>

InputDlg::InputDlg(QWidget *parent) : QDialog(parent)
{
  setWindowTitle("标准输入对话框的实例");   //这个窗口的名字

  nameLabel1 = new QLabel;
  nameLabel1->setText(tr("姓名:"));
  nameLabel2 = new QLabel;
  nameLabel2->setText(tr("张三"));    //姓名的初始值
  nameLabel2->setFrameStyle(QFrame::Panel|QFrame::Sunken);    //设置显示的样式
  nameBtn = new QPushButton;
  nameBtn->setText(tr("修改姓名"));

  sexLabel1 = new QLabel;
  sexLabel1->setText(tr("性别:"));
  sexLabel2 = new QLabel;
  sexLabel2->setText(tr("man"));    //性别的初始化
  sexLabel2->setFrameStyle(QFrame::Panel|QFrame::Sunken);
  sexBtn = new QPushButton;
  sexBtn->setText(tr("修改性别"));

  ageLabel1 = new QLabel;
  ageLabel1->setText(tr("年龄:"));
  ageLabel2 = new QLabel;
  ageLabel2->setText(tr("21"));    //年龄的初始化
  ageLabel2->setFrameStyle(QFrame::Panel|QFrame::Sunken); //设置显示的样式
  ageBtn = new QPushButton;
  ageBtn->setText(tr("修改年龄"));

  scoreLabel1 = new QLabel;
  scoreLabel1->setText(tr("成绩:"));
  scoreLabel2 = new QLabel;
  scoreLabel2->setText(tr("80"));    //年龄的初始化
  scoreLabel2->setFrameStyle(QFrame::Panel|QFrame::Sunken); //设置显示的样式
  scoreBtn = new QPushButton;
  scoreBtn->setText(tr("修改成绩"));

  mainLayout = new QGridLayout(this);
  //第一行的控件
  mainLayout->addWidget(nameLabel1, 0, 0);
  mainLayout->addWidget(nameLabel2, 0, 1);
  mainLayout->addWidget(nameBtn, 0, 2);
  //第二行的控件
  mainLayout->addWidget(sexLabel1, 1, 0);
  mainLayout->addWidget(sexLabel2, 1, 1);
  mainLayout->addWidget(sexBtn, 1, 2);
  //第三行的控件
  mainLayout->addWidget(ageLabel1, 2, 0);
  mainLayout->addWidget(ageLabel2, 2, 1);
  mainLayout->addWidget(ageBtn, 2, 2);
  //第四行的控件
  mainLayout->addWidget(scoreLabel1, 3, 0);
  mainLayout->addWidget(scoreLabel2, 3, 1);
  mainLayout->addWidget(scoreBtn, 3, 2);

  mainLayout->setMargin(15);
  mainLayout->setSpacing(10);

  connect(nameBtn, SIGNAL(clicked()), this, SLOT(ChangeName()));
  connect(sexBtn, SIGNAL(clicked()), this, SLOT(ChangeSex()));
  connect(ageBtn, SIGNAL(clicked()), this, SLOT(ChangeAge()));
  connect(scoreBtn, SIGNAL(clicked()), this, SLOT(ChangeScore()));

}

/*
 * QString getText
(
	QWidget* parent,          	//标准输入对话框的父窗口
	const QString& title,        	//标准输入对话框的标题名
	const QString& label,        	//标准输入对话框的标签提示
	QLineEdit::EchoMode mode=QLineEdit::Normal,
									//指定标准输入对话框中QLineEdit控件的输入
									  模式
	const QString& text=QString(),	//标准字符串输入对话框弹出时QLineEdit控件
									  中默认出现的文字
	bool* ok=0,                 		//注
	Qt::WindowFlags flags=0     		指明标准输入对话框的窗体标识
)
*/

//相应槽的实现
void InputDlg::ChangeName()
{
  //cout<<"???"<<endl;
  bool ok;
  QString text = QInputDialog::getText(this, "标准字符串输入对话框", "qing输入姓名:", QLineEdit::Normal, nameLabel2->text(), &ok);

  if(ok && !text.isEmpty())
    nameLabel2->setText(text);

}

/*
 *
 *QString getItem
(
	QWidget* parent,               	//标准输入对话框的父窗口
	const QString& title,          	//标准输入对话框的标题名
	const QString& label,          	//标准输入对话框的标签提示
	const QStringList& items,     	//注(1)
	int current=0,                  	//注(2)
	bool editable=true,              	//指定QComboBox控件中显示的文字是否可编辑
	bool* ok=0,                   	//注(3)
	Qt::WindowFlags flags=0        //指明标准输入对话框的窗口标识
);
*/
void InputDlg::ChangeSex()
{
  //cout<<"???"<<endl;
  QStringList SexItems;
  SexItems<< "man" << "woman" ;      //流，把这两个字符串输入到SexItems

  bool ok;
  QString SexItem = QInputDialog::getItem(this, "标准tiaomuxuan择对话框",
                                          "the请选择性别", SexItems, 0, false, &ok);

  if(ok && !SexItem.isEmpty())
   {
      sexLabel2->setText(SexItem);
   }

}

/*
 *int getInt
(
	QWidget* parent,            	//标准输入对话框的父窗口
	const QString& title,       	//标准输入对话框的标题名
	const QString& label,       	//标准输入对话框的标签提示
	int value=0,                  	//指定标准输入对话框中QSpinBox控件的默认显示值
	int min=-2147483647,        	//指定QSpinBox控件的数值范围
	int max=2147483647,
	int step=1,                   	//指定QSpinBox控件的步进值
	bool* ok=0,                   	//注
	Qt::WindowFlags flags=0    	//指明标准输入对话框的窗口标识
)
*/
void InputDlg::ChangeAge()
{
  //cout<<"???"<<endl;
  bool ok;
  int age = QInputDialog::getInt(this, "chinese in here is wrong", "input the age", ageLabel2->text().toInt(&ok), 0, 100, 1, &ok);

  if(ok)
    ageLabel2->setText(QString("%1").arg(age));
}

/*
 * double getDouble
(
	QWidget* parent,             	//标准输入对话框的父窗口
	const QString& title,       	//标准输入对话框的标题名
	const QString& label,   	//标准输入对话框的标签提示
	double value=0,              	//指定标准输入对话框中QSpinBox控件默认的显示值
	double min=-2147483647,     	//指定QSpinBox控件的数值范围
	double max=2147483647,
	int decimals=1,              	//指定QSpinBox控件的步进值
	bool* ok=0,                  	//注
	Qt::WindowFlags flags=0     	//指明标准输入对话框的窗口标识
)
 * */
void InputDlg::ChangeScore()
{
  //cout<<"???"<<endl;
  bool ok;
  double score = QInputDialog::getDouble(this, "fuck i can`t use chinese", "input score", scoreLabel2->text().toDouble(&ok), 0, 100, 1, &ok);

  if(ok)
    scoreLabel2->setText(QString("%1").arg(score));
}

结果：

5、消息对话框

msgboxdlg.h

#ifndef MSGBOXDLG_H
#define MSGBOXDLG_H

#include <QDialog>
#include <QPushButton>
#include <QGridLayout>
#include <QDialog>
#include <QLabel>

class MsgBoxDlg : public QDialog
{
  Q_OBJECT
public:
  MsgBoxDlg(QWidget *parent = 0);

private slots:  //槽函数，私有的
  void showQuestionMsg();     //显示问题
  void showInformationMsg();  //显示信息
  void showWarningMsg();  //警告框
  void showCriticalMsg();
  void showAboutMsg();
  void showAboutQtMsg();

private:
  QLabel *label;
  QPushButton *questionBtn;
  QPushButton *informationBtn;
  QPushButton *warningBtn;
  QPushButton *criticalBtn;
  QPushButton *aboutBtn;
  QPushButton *aboutQtBtn;
  QGridLayout *mainLayout;

};

#endif // MSGBOXDLG_H

msgboxdlg.cpp

/**
* 书本:【Qt5开发及实例】
* 功能:实现各种消息对话框
* 文件:msgboxdlg.cpp
* 时间:2015年1月1日12:41:32
* 作者:cutter_point
*/
#include <QMessageBox>

#include "msgboxdlg.h"

MsgBoxDlg::MsgBoxDlg(QWidget *parent) :
  QDialog(parent)
{
  setWindowTitle("标准消息对话框的实例");
  label = new QLabel;   //创建一个标签
  label->setText("请选择一个消息框");

  questionBtn = new QPushButton;
  questionBtn->setText("question题框");

  informationBtn = new QPushButton;
  informationBtn->setText("information");

  warningBtn = new QPushButton;
  warningBtn->setText("warning");

  criticalBtn = new QPushButton;
  criticalBtn->setText("informationwarning");

  aboutBtn = new QPushButton;
  aboutBtn->setText("about");

  aboutQtBtn = new QPushButton;
  aboutQtBtn->setText("aboutQt");

  //为这些按钮布局
  mainLayout = new QGridLayout(this);   //为这个界面布局
  mainLayout->addWidget(label, 0, 0, 1, 2);
  mainLayout->addWidget(questionBtn, 1, 0);
  mainLayout->addWidget(informationBtn, 1, 1);
  mainLayout->addWidget(warningBtn, 2, 0);
  mainLayout->addWidget(criticalBtn, 2, 1);
  mainLayout->addWidget(aboutBtn, 3, 0);
  mainLayout->addWidget(aboutQtBtn, 3, 1);

  //事件相关联
  connect(questionBtn, SIGNAL(clicked()), this, SLOT(showQuestionMsg()));
  connect(informationBtn, SIGNAL(clicked()), this, SLOT(showInformationMsg()));
  connect(warningBtn, SIGNAL(clicked()), this, SLOT(showWarningMsg()));
  connect(criticalBtn, SIGNAL(clicked()), this, SLOT(showCriticalMsg()));
  connect(aboutBtn, SIGNAL(clicked()), this, SLOT(showAboutMsg()));
  connect(aboutQtBtn, SIGNAL(clicked()), this, SLOT(showAboutQtMsg()));

}

/*
 *StandardButton QMessageBox::question
 * (QWidget * parent, const QString & title, const QString & text, StandardButtons buttons = StandardButtons( Yes | No ),
 * StandardButton defaultButton = NoButton) [static]
*/
void MsgBoxDlg::showQuestionMsg()
{
  label->setText("Question Message Box");
  switch (QMessageBox::question(this, "QuestionInformation", "you have changed the information, close it?", QMessageBox::Ok|QMessageBox::Cancel
                                , QMessageBox::Ok))
    {
    case QMessageBox::Ok:
      label->setText("Question button/OK");
      break;
    case QMessageBox::Cancel:
      label->setText("Question button/Cancel");
      break;
    default:
      break;
    }

  return;
}
/*
 *StandardButton	information
 * (QWidget * parent, const QString & title, const QString & text, StandardButtons buttons = Ok, StandardButton defaultButton = NoButton)
 */
void MsgBoxDlg::showInformationMsg()
{
  label->setText("Information Message Box");
  QMessageBox::information(this, "information", "welcome this is a information test");
  return;
}

/*
 * StandardButton	warning
 * (QWidget * parent, const QString & title, const QString & text, StandardButtons buttons = Ok, StandardButton defaultButton = NoButton)
 * */
void MsgBoxDlg::showWarningMsg()
{
  label->setText("warning Message Box");
  switch(QMessageBox::warning(this, "warning", "this have not save, you need save?", QMessageBox::Save|QMessageBox::Discard|QMessageBox::Cancel,
                               QMessageBox::Save))
    {
    case QMessageBox::Save:
      label->setText("warning button/save");
      break;
    case QMessageBox::Discard:
      label->setText("warning button/Discard");
      break;
    case QMessageBox::Cancel:
      label->setText("Warning button/Cancel");
      break;
    default:
      break;
    }

  return;
}

/*
 *StandardButton	critical
 * (QWidget * parent, const QString & title, const QString & text, StandardButtons buttons = Ok, StandardButton defaultButton = NoButton)
 * */
void MsgBoxDlg::showCriticalMsg()
{
  label->setText("Critical Message Box");
  QMessageBox::critical(this, "Critical", "this is a Critical test");
  return;
}

/*
 * void	about(QWidget * parent, const QString & title, const QString & text)
 * */
void MsgBoxDlg::showAboutMsg()
{
  label->setText("About Message Box");
  QMessageBox::about(this, "Aboutinformation", "this is a 'About' test! ");
  return;
}

/*
 * void	aboutQt(QWidget * parent, const QString & title = QString())
 * */
void MsgBoxDlg::showAboutQtMsg()
{
  label->setText("About Qt Message Box"); //关于Qt消息框
  QMessageBox::aboutQt(this, "About Qt ");    //这个是消息框的标题
  return;
}

结果：

6、自定义消息框

customdlg.h

/**
* 书本:【Qt5开发及实例】
* 功能:实现自定义的消息框
* 文件:customdlg.h
* 时间:2015年1月1日13:47:07
* 作者:cutter_point
*/
#ifndef CUSTOMDLG_H
#define CUSTOMDLG_H

#include <QDialog>

class CustomDlg : public QDialog
{
  Q_OBJECT
public:
  CustomDlg(QWidget *parent = 0);

signals:

public slots:

};

#endif // CUSTOMDLG_H

其余在dialog.cpp中实现：

结果：

result最终结果：

资源下载地址：。。。。我也是醉了，我上传的文件，我就想看看，就这么难，时不时给我崩溃一下，你逗我呢？而且速度那么慢，我不知道为什么，代码全都是死循环吗，为毛那么慢！！！！

好吧：http://download.csdn.net/detail/cutter_point/8318799