Sorry for the stupid question, but I'm not sure what t开发者_StackOverflow社区he name of this Mac OS X Cocoa user interface element is (the modal container that up in a window). Thanks!
That's a sheet, otherwise known as a document-modal dialog. You can show them using the NSPanel class.
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......
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