什么是所有文件的mime类型

Question

Simple Question: What is the mimetype for "All Files", ie * or *.*

I need it to add the option "All Files" to a filter for files in the QFileDialog :

QFileDialog dialog(this);
QStringList mTypes= byteToStringList(QImageReader::supportedMimeTypes());
mTypes.append("???");//what to add here to get "All Files (*)" or "All Files (*.*)"
dialog.setMimeTypeFilters(mTypes);

Answer 1

it's literally in the documentation for the function

says

Use "application/octet-stream" for the "All files (*)" filter, since that is the base MIME type for all files.

Answer 2

只要根本不设置任何mime类型过滤器，它就会显示所有文件。

Answer 3

you can use this:

QFileDialog dialog(this);
dialog.setFileMode(QFileDialog::AnyFile);