QT标准对话框

image-20220123114821788

示例:

  • 消息框

image-20220123223658903

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
#include "msgboxdlg.h"
#include<QMessageBox>
MsgBoxDlg::MsgBoxDlg(QWidget* parent ):QDialog(parent)
{
    setWindowTitle("标准信息对话框集合");
    //构造部件
    m_tipLabel = new QLabel("请选择一种消息框");
    m_questionBtn = new QPushButton("问题消息框");
    m_infomationBtn= new QPushButton("信息消息框");
    m_warningBtn = new QPushButton("警告消息框");
    m_criticalBtn = new QPushButton("错误消息框");
    m_aboutBtn = new QPushButton("关于消息框");
    m_aboutQtBtn = new QPushButton("关于Qt消息框");
    //布局界面
    m_mainLayout = new QGridLayout(this);
    m_mainLayout->addWidget(m_tipLabel,0,0,1,2);
    m_mainLayout->addWidget(m_questionBtn,1,0);
    m_mainLayout->addWidget(m_infomationBtn,1,1);
    m_mainLayout->addWidget(m_warningBtn,2,0);
    m_mainLayout->addWidget(m_criticalBtn,2,1);
    m_mainLayout->addWidget(m_aboutBtn,3,0);
    m_mainLayout->addWidget(m_aboutQtBtn,3,1);

    connect(m_questionBtn,&QPushButton::clicked,this,&MsgBoxDlg::showQuestionMsgDlg);
    connect(m_infomationBtn,&QPushButton::clicked,this,&MsgBoxDlg::showInfomationMsgDlg);
    connect(m_warningBtn,&QPushButton::clicked,this,&MsgBoxDlg::showWarningMsgDlg);
    connect(m_criticalBtn,&QPushButton::clicked,this,&MsgBoxDlg::showCriticalMsgDlg);
    connect(m_aboutBtn,&QPushButton::clicked,this,&MsgBoxDlg::showAboutMsgDlg);
    connect(m_aboutQtBtn,&QPushButton::clicked,this,&MsgBoxDlg::showAboutQtMsgDlg);
}

void MsgBoxDlg::showQuestionMsgDlg()
{
    m_tipLabel->setText("问题消息框");
   int res =  QMessageBox::question(this,"问题消息框","您已打开问题消息框,是否关闭？",QMessageBox::Ok | QMessageBox::Cancel,QMessageBox::Ok);
   switch (res) {
   case QMessageBox::Ok:
       m_tipLabel->setText("问题消息框-确定");
       break;
   case QMessageBox::Cancel:
       m_tipLabel->setText("问题消息框-取消");
   default:
       break;
   }
}

void MsgBoxDlg::showInfomationMsgDlg()
{
    m_tipLabel->setText("信息消息框");
    QMessageBox::information(this,"信息提示框","这是个信息提示框");
}

void MsgBoxDlg::showWarningMsgDlg()
{
    m_tipLabel->setText("警告消息");
   int res = QMessageBox::warning(this,"警告消息框","警告!",QMessageBox::Save | QMessageBox::Cancel | QMessageBox::Discard,QMessageBox::Save);
    switch (res) {
    case QMessageBox::Save:
        m_tipLabel->setText("用户点击了保存");
        break;
       case QMessageBox::Discard:
        m_tipLabel->setText("用户点击了忽视");
        break;
    case QMessageBox::Cancel:
        m_tipLabel->setText("用户点击了取消");
    default:
        break;
    }
}

void MsgBoxDlg::showCriticalMsgDlg()
{
    m_tipLabel->setText("错误消息框");
    QMessageBox::critical(this,"错误消息框","发生错误!");
}

void MsgBoxDlg::showAboutMsgDlg()
{
    m_tipLabel->setText("关于消息框");
    QMessageBox::about(this,"关于","关于消息");
}

void MsgBoxDlg::showAboutQtMsgDlg()
{
    m_tipLabel->setText("关于Qt消息框");
    QMessageBox::aboutQt(this,"关于QT");
}

  • 输入对话框

image-20220123223756778

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
#include "inputdlag.h"
#include<QLineEdit>
#include<QInputDialog>
InputDlag::InputDlag(QWidget*parent):QDialog(parent)
{
    setWindowTitle("输入对话框示例");
    m_nameTitle = new QLabel("姓名:");
    m_sexTitle = new QLabel("性别");
    m_ageTitle = new QLabel("年龄:");
    m_scoreTitle = new QLabel("打分:");
    m_nameLabel =  new QLabel("快乐的威猛先生");
    m_sexLabel = new QLabel("男");
    m_ageLabel = new QLabel("19");
    m_scoreLabel = new QLabel("100");
    m_nameBtn = new QPushButton("编辑姓名");
    m_ageBtn = new QPushButton("编辑年龄");
    m_sexBtn = new QPushButton("编辑性别");
    m_scoreBtn = new QPushButton("编辑分数");

    m_mainLayout = new QGridLayout(this);
    m_mainLayout->addWidget(m_nameTitle,0,0);
    m_mainLayout->addWidget(m_nameLabel,0,1);
    m_mainLayout->addWidget(m_nameBtn,0,2);
    m_mainLayout->addWidget(m_sexTitle,1,0);
    m_mainLayout->addWidget(m_sexLabel,1,1);
    m_mainLayout->addWidget(m_sexBtn,1,2);
    m_mainLayout->addWidget(m_ageTitle,2,0);
    m_mainLayout->addWidget(m_ageLabel,2,1);
    m_mainLayout->addWidget(m_ageBtn,2,2);
    m_mainLayout->addWidget(m_scoreTitle,3,0);
    m_mainLayout->addWidget(m_scoreLabel,3,1);
    m_mainLayout->addWidget(m_scoreBtn,3,2);
    //设置控件间的间隙
    m_mainLayout->setSpacing(20);
    //设置控件与窗体的间隙
    m_mainLayout->setMargin(10);

    connect(m_nameBtn,&QPushButton::clicked,this,&InputDlag::editName);
    connect(m_ageBtn,&QPushButton::clicked,this,&InputDlag::editAge);
    connect(m_sexBtn,&QPushButton::clicked,this,&InputDlag::editSex);
    connect(m_scoreBtn,&QPushButton::clicked,this,&InputDlag::editScore);
}

void InputDlag::editName()
{
    bool ok;
   QString sName = QInputDialog::getText(this,"标准字符串输入对话框","请编辑姓名",QLineEdit::Normal,m_nameLabel->text(),&ok);
    if(ok && !sName.isEmpty())
    {
        m_nameLabel->setText(sName);
    }
}

void InputDlag::editAge()
{
    bool ok;
    int age = QInputDialog::getInt(this,"标准int数据类型对话框","请编辑年龄",m_ageLabel->text().toInt(),0,120,1,&ok);
    if(ok)
    {
      m_ageLabel->setText(QString("%1").arg(age));
    }
}

void InputDlag::editSex()
{
    bool ok;
    QStringList sexList;
    sexList<<"男"<<"女"<<"保密";
    QString sex = QInputDialog::getItem(this,"标准条目输入对话框","请选择性别",sexList,0,false,&ok);
    if(ok && !sex.isEmpty())
    {
        m_sexLabel->setText(sex);
    }
}

void InputDlag::editScore()
{
    bool ok;//保存函数调用是否成功
    double score = QInputDialog::getDouble(this,"标准double类型输入对话框","请打分",m_scoreLabel->text().toDouble(),0,100,1,&ok);
    if(ok)
    {
        m_scoreLabel->setText(QString::number(score));
    }
}

  • 文件对话框

image-20220123224016456

1
2
3
4
5
void Dialog::ShowFileDlg()
{
    QString sPath = QFileDialog::getOpenFileName(this,"标准文件对话框",".","C++ files(*.cpp);;C files(*.c);;Header files(*.h)" );
    m_fileLineBtn->setText(sPath);
}