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QT中如何读写ini配置文件

2020-05-06 来源:品趣旅游知识分享网
QT中如何读写ini配置⽂件

如图1所⽰,我们需要在QT界⾯中实现⼿动读取参数存放的位置,那么我们该如何做呢?

⽅法:读取ini格式的配置⽂件,实现路径的写⼊与读取。

第⼀步:界⾯构造函数中,初始化⼀个Config.ini⽂件

//初始化⼀个.ini配置⽂件

//qApp是QT系统⾃带的,可以直接使⽤

QString iniFilePath=qApp->applicationDirPath()+\"/Config.ini\";

//如果不存在Config.ini,便⽣成⼀个Config.ini。如果已经存在了,则略过。if(!QFile::exists(iniFilePath)){

QSettings configIniWrite(iniFilePath,QSettings::IniFormat); configIniWrite.beginGroup(\"calib_data_path\");

configIniWrite.setValue(\"calib_data_path\ configIniWrite.endGroup();

configIniWrite.beginGroup(\"robot_pose_file\");

configIniWrite.setValue(\"robot_pose_file_path\ configIniWrite.endGroup();}

第⼆步:定义⼀个保存Config⽂件的函数

void saveConfig(const QString& group,const QString& name, const QVariant& var){

QString iniFilePath = qApp->applicationDirPath() + \"/Config.ini\"; if (QFile::exists(iniFilePath)) {

QSettings configIniWrite(iniFilePath,QSettings::IniFormat); configIniWrite.beginGroup(group); configIniWrite.setValue(name,var); configIniWrite.endGroup(); }}

第三步:设置路径

Demo1:

//设置相机标定⽂件路径

void CalibrationForm::btnLoadCamParaPath_clicked(){

QFileDialog dialog(this,tr(\"Select calib data file\")); dialog.setAcceptMode(QFileDialog::AcceptOpen); dialog.setFileMode(QFileDialog::ExistingFile); static bool firstDialog = true; if (firstDialog) {

firstDialog = false;

const QStringList fileLocations =

QStandardPaths::standardLocations(QStandardPaths::DesktopLocation); dialog.setDirectory(fileLocations.isEmpty() ? QDir::currentPath():fileLocations.last()); }

dialog.setNameFilter(tr(\"FA0180090134(*.xml)\")); if (dialog.exec()==QDialog::Accepted) {

//获得⽂件夹路径+⽂件名

_campara_path = dialog.selectedFiles().first();

ui->lineEditCamParaPath->setText(_campara_path); //此处是在lineEdit窗⼝显⽰路径名+⽂件名 saveConfig(\"calib_data_path\ }}

demo2:

//设置⼿眼标定时的机械臂运动轨迹路径

void CalibrationForm::btnLoadRobotPara_clicked(){

QFileDialog dialog(this,tr(\"Select robot pose file\")); dialog.setAcceptMode(QFileDialog::AcceptOpen); dialog.setFileMode(QFileDialog::ExistingFile); static bool first_Dialog = true; if (first_Dialog) {

first_Dialog = false;

const QStringList fileLocations =

QStandardPaths::standardLocations(QStandardPaths::DesktopLocation); dialog.setDirectory(fileLocations.isEmpty()?QDir::currentPath():fileLocations.last()); }

dialog.setNameFilter(tr(\"robot_pose_file(*.txt)\")); if (dialog.exec()==QDialog::Accepted) {

_robot_pose_path = dialog.selectedFiles().first();

ui->lineEditRobotPath->setText(_robot_pose_path);

saveConfig(\"robot_pose_file\ }}

由于ini⽂件不可在星球中上传,此处⽤txt形式的截图作为附件,见图2.

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