一、用法

1、消息盒子QMessageBox

#include <QMessageBox>//用消息盒子提示int ret = QMessageBox::warning(this,"操作提示","您确定要退出吗？", QMessageBox::Yes, QMessageBox::No);if(ret == QMessageBox::Yes){this->close();}else {}

2、文件对话框QFileDialog

#include <QFileDialog>//通过文件对话框获取文件路径QString filename = QFileDialog::getOpenFileName(this);//把文件路径设置在LineEditui->lineEdit->setText(filename);

3、颜色对话框QColorDialog

#include<QColorDialog>//通过颜色对话框修改标签的背景颜色QColor color = QColorDialog::getColor();//字符串打包sprintfQString sty = QString("background-color:%1").arg(color.name());ui->label->setStyleSheet(sty);//代码动态修改样式

4、字体对话框QFontDialog

//获取字体对象bool ok = false;QFont font = QFontDialog::getFont(&ok,this);if(ok){this->ui->label->setFont(font);//设置字体}

5、输入对话框QInputDialog

//通过输入对话框获取字符串QString text = QInputDialog::getText(this, "信息录入","输入密码",QLineEdit::Password);ui->label->setText(text);

6、自定义对话框QDialog

QDialog dialog;dialog.setWindowTitle("自定义对话框测试");dialog.resize(200, 100);QPushButton yesBt("确定",&dialog);yesBt.setGeometry(0, 40, 100, 40);QPushButton noBt("取消",&dialog);noBt.setGeometry(100, 40, 100,40);//关联按钮信号connect(&yesBt, &QPushButton::clicked, &dialog, &QDialog::accept);connect(&noBt, &QPushButton::clicked, &dialog, &QDialog::reject);int ret = dialog.exec();//对话框 --当对话框调用accept， reject函数就会退出if(ret == QDialog::Accepted){qDebug()<<"你点击了确定";}if(ret == QDialog::Rejected){qDebug()<<"你点击了取消";}

二、综合应用

源码下载