macOS locate file window?

[larswik]

I don't know what that is called. But I am to the point of having the client click on a button, or Command + o and have a window pop up so they can navigate to an image or sound file? and load it to an NSView or NSSound. I am sure there is a Class written for this, but what it is called?

Thanks

 

[admanimal]

NSOpenPanel

 

[larswik]

Thank you.