Correct syntax for qrc and file URI prefix?

[SPlatten]

What is the correct syntax for qrc and file URI prefixes?

I know that a URI prefix for HTTP is normally "http://" and for HTTPS "https://"

In the application I'm working on qrc is prefixed with "qrc:/", single slash, files are prefixed with "file:///".

Are these both correct, notice that the file prefix has 3 slashes.

https://en.wikipedia.org/wiki/File_URI_scheme

States that three slashes is correct and two isn't.

[jsulm]

@SPlatten Like shown here: https://doc.qt.io/qt-5/resources.html

cutAct = new QAction(QIcon(":/images/cut.png"), tr("Cu&t"), this);

or

cutAct = new QAction(QIcon("qrc:///images/cut.png"), tr("Cu&t"), this);