QT--选择⽂件保存路径
选择⽂件保存路径有两种逻辑：1.先选择⽂件保存路径后拍照；2.先拍照后选择路径保存该bufframe逻辑1的实现⽅法：ui界⾯
点击获取保存路径PushButton,
void suCam::on_pushButton_fileChoose_clicked(){
QString srcDirPath = QFileDialog::getExistingDirectory( this, \"choose src Directory\ \"/\");
if (srcDirPath.isEmpty()) {
return; } else {
qDebug() << \"srcDirPath=\" << srcDirPath; srcDirPath += \"/\"; }}
获取保存地址后，⾃动保存代码如下：
//Auto Save
void HamamatsuCam::SaveSequenceImg(QImage image, int nframe){
std::string m_path = srcDirPath.toStdString();
std::string path = m_path +std::to_string(nframe) + \".bmp\"; QString SavePath = QString::fromStdString(m_path);
QString SequenceSavePath = QString::fromStdString(path); image.save(SequenceSavePath,\"tif\类型}
逻辑2的实现⽅法：
在已经获取⼀张图⽚的bufframe的前提下，选择保存：
//BTN-Save Snap image
void suCam::on_pushButton_save_clicked(){
//获取保存路径
if(snap_img.isNull())return;
_TempPath = QCoreApplication::applicationDirPath();//.exe项⽬⽂件所在⽬录 dtCurtime = QDateTime::currentDateTime(); //设置当前时间为保存时间
_TempPath = _TempPath + \"//Image//\" + dtCurtime.toString(\"yyyyMMddhhmmss\"); //保存名称为path + image（？） + ⽇期年y⽉M⽇d时h分m秒s strFileName = QFileDialog::getSaveFileName(this,tr(\"Save Picture\"), //类函数QFileDiaLog:获取⽂件路径//getSaveFileName:获取保存⽂件名字 _TempPath,
\"PNG(*.png);;JPG(*.jpg);;BMP(*.bmp);;TIF(*.tif)\"); if(!strFileName.isNull()) {
int nIndex = strFileName.lastIndexOf('.');//寻找‘.’符号在字符串中的id nIndex++;
int nLen = strFileName.length()-nIndex;
strSuffix = strFileName.right(nLen);//截取‘.’符号后⾯的字符串，这是为了获取⽤户选择的⽂件后缀名 snap_img.save(strFileName,strSuffix.toUpper().toUtf8(),100);//保存图⽚ }}
