Qt弹框展示
1.相关说明
文件选择弹框、目录选择弹框、保存文件弹框、颜色选择弹框、字体选择弹框、进度条弹框、输入对话框、标准消息框等
2.相关界面
3.相关代码
#include "widget.h"
#include "ui_widget.h"
#include
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Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
}
Widget::~Widget()
{
delete ui;
}
// 打开文件
void Widget::on_btnOpenOneFile_clicked()
{
QString curPath = QCoreApplication::applicationDirPath();
QString fileName = QFileDialog::getOpenFileName(this, "选择一个文件", curPath, "(*.txt);;(*.jpg *.png);;(*.*)");
if(!fileName.isEmpty()){
ui->plainTextEdit->appendPlainText(fileName);
}
}
// 打开多个文件
void Widget::on_btnOpenManyFiles_clicked()
{
QString curPath = QCoreApplication::applicationDirPath();
QStringList fileNames = QFileDialog::getOpenFileNames(this, "选择一个或多个文件",
curPath, "(*.txt);;(*.jpg *.png);;(*.*)");
for(auto &fileName : fileNames){
ui->plainTextEdit->appendPlainText(fileName);
}
}
// 选择已有目录
void Widget::on_btnChooseDir_clicked()
{
QString curPath = QCoreApplication::applicationDirPath();
QString selectedDir = QFileDialog::getExistingDirectory(this, "选择目录", curPath);
if(!selectedDir.isEmpty()){
ui->plainTextEdit->appendPlainText(selectedDir);
}
}
// 保存文件
void Widget::on_btnSaveFile_clicked()
{
QString curPath = QCoreApplication::applicationDirPath();
QString fileName = QFileDialog::getSaveFileName(this, "保存文件", curPath, "(*.txt);;(*.jpg *.png);;(*.*)");
if(!fileName.isEmpty()){
ui->plainTextEdit->appendPlainText(fileName);
}
}
// 进度条对话框
void Widget::on_btnProgress_clicked()
{
int minValue = 0;
int maxValue = 200;
QProgressDialog dlgProgress("正在复制文件...", "取消", minValue, maxValue, this);
dlgProgress.setWindowTitle("复制文件");
dlgProgress.setWindowModality(Qt::WindowModal);
connect(&dlgProgress, &QProgressDialog::canceled, [&]{ui->plainTextEdit->appendPlainText("进度已取消！！！");});
QElapsedTimer msCounter;
for(int i = minValue; i <= maxValue; i++){
dlgProgress.setValue(i);
dlgProgress.setLabelText(QString::asprintf("当前进度:%d", i));
msCounter.start();
while(true){
if(msCounter.elapsed() > 30){
break;
}
}
if(dlgProgress.wasCanceled()){
break;
}
}
}
// 选择颜色
void Widget::on_btnChooseColor_clicked()
{
QPalette pale = ui->plainTextEdit->palette();
QColor iniColor = pale.color(QPalette::Text);
QColor color = QColorDialog::getColor(iniColor, this, "选择颜色");
if(color.isValid()){
pale.setColor(QPalette::Text, color);
ui->plainTextEdit->setPalette(pale);
}
}
// 选择字体
void Widget::on_btnChooseFont_clicked()
{
QFont iniFont = ui->plainTextEdit->font();
bool ok = false;
QFont font = QFontDialog::getFont(&ok, iniFont, this, "设置字体");
if(ok){
ui->plainTextEdit->setFont(font);
}
}
// 输入字符串
void Widget::on_btnInputChars_clicked()
{
QString dlgTitle = "输入文字对话框";
QString txtLabel = "请输入文件名";
QString iniInput = "默认文字";
QLineEdit::EchoMode echoMode = QLineEdit::Normal; // QLineEdit::Password
bool ok = false;
QString text = QInputDialog::getText(this, dlgTitle, txtLabel, echoMode, iniInput,&ok);
if(ok && !text.isEmpty()){
ui->plainTextEdit->appendPlainText(text);
}
}
// 输入整数
void Widget::on_btnInputInt_clicked()
{
QString dlgTitle = "输入整数对话框";
QString txtLabel = "设置文本框字体大小";
int defaultValue = ui->plainTextEdit->font().pointSize();
int minValue = 6;
int maxValue = 60;
int stepValue = 1;
bool ok = false;
int inputValue = QInputDialog::getInt(this, dlgTitle, txtLabel, defaultValue, minValue, maxValue, stepValue, &ok);
if(ok){
QString str = QString("文本框字体大小被设置为:%1").arg(inputValue);
ui->plainTextEdit->appendPlainText(str);
QFont font = ui->plainTextEdit->font();
font.setPointSize(inputValue);
ui->plainTextEdit->setFont(font);
}
}
// 输入浮点数
void Widget::on_btnInputFloat_clicked()
{
QString dlgTitle = "输入浮点数对话框";
QString txtLabel = "输入一个浮点数";
float defaultValue = 6.14;
float minValue = 6;
float maxValue = 60;
int decimals = 2;
bool ok = false;
float inputValue = QInputDialog::getDouble(this, dlgTitle, txtLabel, defaultValue, minValue, maxValue, decimals, &ok);
if(ok){
QString str = QString::asprintf("输入的浮点为：%.2f", inputValue);
ui->plainTextEdit->appendPlainText(str);
}
}
// 条目选择输入
void Widget::on_btnInputItem_clicked()
{
QStringList items;
items << "优" << "良" << "中" << "差";
QString dlgTitle = "输入项对话框";
QString txtLabel = "请选择一个级别";
int curIndex = 0;
bool editable = false;
bool ok = false;
QString text = QInputDialog::getItem(this, dlgTitle, txtLabel, items, curIndex, editable, &ok);
if(ok && !text.isEmpty()){
ui->plainTextEdit->appendPlainText(text);
}
}
// question对话框
void Widget::on_btnQuestion_clicked()
{
QString dlgTitle = "Question消息框";
QString strInfo = "文件已被修改，是否保存？";
int result = QMessageBox::question(this, dlgTitle, strInfo,
QMessageBox::Yes|QMessageBox::No|QMessageBox::Cancel, QMessageBox::NoButton);
if(result == QMessageBox::Yes){
ui->plainTextEdit->appendPlainText("Question消息框：Yes被选中");
} else if(result == QMessageBox::No){
ui->plainTextEdit->appendPlainText("Question消息框：No被选中");
}else if(result == QMessageBox::Cancel){
ui->plainTextEdit->appendPlainText("Question消息框：Cancel被选中");
}else{
ui->plainTextEdit->appendPlainText("Question消息框：没有按钮被选中");
}
}
// info弹框
void Widget::on_btnInfo_clicked()
{
QString dlgTitle = "Infomation消息框";
QString strInfo = "文件已打开，请检查";
QMessageBox::information(this, dlgTitle, strInfo);
}
// warning弹窗
void Widget::on_btnWarning_clicked()
{
QString dlgTitle = "Warning消息框";
QString strInfo = "文件已被修改";
QMessageBox::warning(this, dlgTitle, strInfo);
}
// critical错误弹窗
void Widget::on_btnCritical_clicked()
{
QString dlgTitle = "Critical消息框";
QString strInfo = "文件已被修改！！！";
QMessageBox::critical(this, dlgTitle, strInfo);
}
// 自定义关于
void Widget::on_btnAbout_clicked()
{
QString dlgTitle = "About消息框";
QString strInfo = "XXXX版本1.0";
QMessageBox::about(this, dlgTitle, strInfo);
}
// aboutQt消息框
void Widget::on_btnAboutQt_clicked()
{
QString dlgTitle = "aboutQt消息框";
QMessageBox::aboutQt(this, dlgTitle);
}