qt中获取打开文件路径，颜色对话框，字体对话框，自定义对话框，消息对话框，输入对话框

1.获取打开文件的文件路径

//获取打开文件的文件路径--父窗口，窗口名称，打开路径，文件筛选QString s = QFileDialog::getOpenFileName(this,"open file dialog","/","C++ files(*.cpp)::C files(*.c)::Head files(*.h)");

2.打开颜色管理器，获取选中的颜色

//打开颜色管理器，获取选中的颜色，并改变QFrame的颜色为选中的颜色QColor c = QColorDialog::getColor(Qt::blue);if(c.isValid()){    QFrame *frame=new QFrame;    frame->setFrameShape(QFrame::Box);    frame->setAutoFillBackground(true);    frame->setPalette(QPalette(c));}

3.打开字体设置对话框，返回设置的字体

//打开字体设置对话框，返回设置的字体bool ok;QFont f = QFontDialog::getFont(&ok);if (ok){    //lineEdit->setFont(f);}

4.用户自定义对话框

//用户自定义对话框，并返回用户点击的按钮QMessageBox customMsgBox;customMsgBox.setWindowTitle(tr("用户自定义消息框"));QPushButton *yesBtn=customMsgBox.addButton(tr("Yes"),QMessageBox::ActionRole);QPushButton *noBtn=customMsgBox.addButton(tr("No"),QMessageBox::ActionRole);QPushButton *cancelBtn=customMsgBox.addButton(QMessageBox::Cancel);customMsgBox.setText(tr("这是一个用户自定义消息框!"));customMsgBox.setIconPixmap(QPixmap("Qt.png"));customMsgBox.exec();if(customMsgBox.clickedButton()==yesBtn)    return 1;if(customMsgBox.clickedButton()==noBtn)    return 0;if(customMsgBox.clickedButton()==cancelBtn)    return 2;return;

5.标准消息对话框

//1.QuestionMessageBoxint tempnum = 1;switch(QMessageBox::question(this,tr("Question框"),      tr("修改完成，是否要结束程序？"),      QMessageBox::Ok|QMessageBox::Cancel,QMessageBox::Ok)){case QMessageBox::Ok:    tempnum = 1;    break;case QMessageBox::Cancel:    tempnum = 0;    break;default:    break;}return tempnum;

//2.informationMessageBoxQMessageBox::information(this,tr("Information框"),tr("这是Information框"));

//3.warningMessageBoxint tempnum = 1;switch(QMessageBox::warning(this,tr("Warning框"),     tr("您修改的内容还未保存，是否要保存？"),     QMessageBox::Save|QMessageBox::Discard|QMessageBox::Cancel,     QMessageBox::Save)){case QMessageBox::Save:    tempnum = 1;    break;case QMessageBox::Discard:    tempnum = 2;    break;case QMessageBox::Cancel:    tempnum = 0;    break;default:    break;}return tempnum;

//4.criticalMessageBox--错误消息框QMessageBox::critical(this,tr("Critical消息框"),tr("Critical框测试！"));

//5.aboutMessageBoxQMessageBox::about(this,tr("About消息框"),tr("About框测试！"));

6.标准输入对话框

//1.字符串bool ok;QString text=QInputDialog::getText(this,tr("标准输入对话框"),tr("请输入XXXX："), QLineEdit::Normal,"默认内容",&ok);if (ok && !text.isEmpty())    return text;

//2.下拉框QStringList SexItems;SexItems << tr("男") << tr("女");bool ok;QString SexItem = QInputDialog::getItem(this, tr("标准条目选择对话框"),  tr("请选择性别："), SexItems, 0, false, &ok);if (ok && !SexItem.isEmpty())    return SexItem;

//3.int型bool ok;int age = QInputDialog::getInt(this, tr("标准int类型输入对话框"), tr("请输入年龄："), ageLabel2->text().toInt(&ok), 0, 100, 1, &ok);if (ok)    ageLabel2->setText(QString(tr("%1")).arg(age));

//4.double型bool ok;double score = QInputDialog::getDouble(this, tr("标准double类型输入对话框"), tr("请输入成绩："),scoreLabel2->text().toDouble(&ok), 0, 100, 1, &ok);if(ok)    scoreLabel2->setText(QString(tr("%1")).arg(score));