That did the trick, thanks :)
Independent Cocoa Developer, Macatomy Software http://macatomy.com On 2010-02-14, at 12:22 AM, David Duncan wrote: > On Feb 13, 2010, at 9:45 PM, PCWiz wrote: > >> I have a really simple UIView subclass, all it contains is this: >> >> - (void)drawRect:(CGRect)rect >> { >> CGContextRef ctx = UIGraphicsGetCurrentContext(); >> CGContextSetRGBFillColor(ctx, 1.0f, 1.0f, 1.0f, 1.0f); >> CGContextFillEllipseInRect(ctx, CGRectMake(10.0f, 10.0f, 100.0f, >> 100.0f)); >> } >> >> It should draw a white circle. To use it, I'm programatically creating the >> view using UIView initWithFrame: then adding it as a subview in my >> UIViewController's viewDidLoad method. The problem is that a black square >> appears behind the circle. I don't know if this is due to the fact that >> there are several CALayers under the view. Any suggestions? > > > By default views are opaque, and the backing store for the view is likely > filled with zeros (this is not guaranteed, but common) so the view's backing > store is interpreted as a white circle on a black background. > > If you set opaque=NO, then you may get white on a clear background, but you > can only guarantee such behavior if you set backgroundColor=[UIColor > clearColor]; > -- > David Duncan > Apple DTS Animation and Printing > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
