保存文件
QString History;
QString FileName=QFileDialog::getSaveFileName(nullptr,
"Select file for save",
History,
"PNG file(*.png)");
qDebug()<<FileName;
保存文件信息
QFileInfo F_info(FileName);
保存上一次的路径
History=F_info.path();
打开一个文件
QString History;
QString FileName=QFileDialog::getOpenFileName(nullptr,
"Select file for open",
History,
"PNG file(*.png)");
qDebug()<<FileName;
QFileInfo F_info(FileName);
History=F_info.path();
打开一个目录
QString History;
QString FileName=QFileDialog::getExistingDirectory();
qDebug()<<FileName;
QFileInfo F_info(FileName);
History=F_info.path();