One Quickie

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Grabbing a view into an image (NSView->General)

In your NSView subclass:

[self lockFocus];

NSBitmapImageRep *bits;
bits = [[NSBitmapImageRep alloc]
           initWithFocusedViewRect: [self bounds]];
[self unlockFocus];

Then you can add it to an NSImage or save it to a file, or whatever.

If you want to retain the vectoritude of the drawing, you can use [self dataWithPDFInsideRect: [self bounds]], and then make an NSPDFImageRep. Avoid the NSEPSImageRep since it makes a trip through NSPDFImageRep along with a slow PS to PDF conversion. (Thanks to Peter Hosey for the PDF hint)