ftp.nice.ch/pub/next/developer/objc/appkit/Starter.1.1.s.tar.gz#/Starter1.1/STWindowCategory.m

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#import "STWindowCategory.h"

@implementation Window(enable_disable)

- disableDisplayFlush
{
	[self disableFlushWindow];
	[self disableDisplay];
	return self;
}
	
- enableAndDisplayFlush
{	[self reenableDisplay];
	[self display];
	[self reenableFlushWindow];
	[self flushWindow];
	return self;
}

@end

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.