Quartz border (1 pixel border around an image)

[john855]

I am trying to use quartz 2d to draw a simple path around an image. It is a rectangle with rounded corners, and I haven't been able to get this to work using the same function that is rounding off the corners of my image but for the life of me I cant get it to work.

Here is my effort so far (which does not work):

+(UIImage *)makeRoundCornerImage : (UIImage*) img : (int) cornerWidth : (int) cornerHeight
{
	UIImage * newImage = nil;
	if( nil != img)
	{
		NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
		
		int w = img.size.width;
		int h = img.size.height;
		
		CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
		CGContextRef context = CGBitmapContextCreate(NULL, w, h, 8, 4 * w, colorSpace, kCGImageAlphaPremultipliedFirst);
		
		CGContextBeginPath(context);
		CGRect rect = CGRectMake(0, 0, img.size.width, img.size.height);
		addRoundedRectToPath(context, rect, cornerWidth, cornerHeight);
		CGContextClosePath(context);
		CGContextClip(context);
		
		/*
		CGRect rect2 = CGRectMake(0, 0, img.size.width-10, img.size.height-10);
		CGContextBeginPath(context);
		CGContextSetLineWidth(context, 10);
		CGContextSetStrokeColorWithColor(context, [UIColor blackColor].CGColor);
		CGContextStrokeRect(context, rect2);
		CGContextClosePath(context);
		*/
		
		//add a border 
		/*
		CGContextBeginPath(context);
		addRoundedRectToPath(context, rect, cornerWidth, cornerHeight);
		CGContextSetLineWidth(context, 10);
		CGContextStrokePath(context);
		CGContextClosePath(context); 
		*/
		
		
		CGContextDrawImage(context, CGRectMake(0, 0, w, h), img.CGImage);
		
		CGImageRef imageMasked = CGBitmapContextCreateImage(context);
		CGContextRelease(context);
		CGColorSpaceRelease(colorSpace);
		
		newImage = [[UIImage imageWithCGImage:imageMasked] retain];
		[ pool release];
	}
	return newImage;
}

[john855]

anyone?