DrawRect without erasing content?

I have two transparent UIViews overlapping, I want to draw in the "behind" one, but without clearing the content that is already present.
I have set the "clearsContextBeforeDrawing" property of that view to NO, but when I do a "setNeedsDisplay" to get it's drawRect called, the contents is still cleared.
How can I prevent this?

If you can point to the part of this that isn't clear then you should file a bug.
http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaViewsGuide/Advanc edSubclassing/chapter7_section3.html

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How do I unlink Ipod from my old PC (which has crashed HDD) and link to new PC without erasing contents of my Ipod?

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See:
Syncing to a "New" Computer or replacing a "crashed" Hard Drive: Apple Support Communities

The iPod is synced with another iTunes Library, how do I sync it with my new MacBook Pro without erasing contents of iPod?

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Copy everything from your old computer, or your backup copy of your old computer, to your new one.

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Hey all,
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How to add music content to iphone without erasing what's already there?

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If you have manually manage music and videos checked and have disabled sync automatically, you can now drag and drop videos right onto the iPhone in iTunes. You can also delete songs and videos right from the iPhone in iTunes. Just click on the iPhone in the left pane, hit the music folder and drag and drop all you want and delete all you want.

HT1386 My old computer crashed and I can't sync new songs from my new computer to my IPod without erasing all of the existing content on the IPod. Can new songs be added without erasing?

My old computer crashed and I can't sync new songs from my new computer to my IPod without erasing all of the existing content on the IPod. Can new songs be added without erasing?

Yes by:
Using iPhone, iPad, or iPod with multiple computers
However, you can make this computer the syncing computer by:
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iTunes Store: Transferring purchases from your iOS device or iPod to a computer
- Transfer other music by using a third-party program like one of those discussed here:
Copy music
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- After everything is on the computer connect the iPod to the computer and make a backupo by right clicking on the iPod under Devices in iTunes and select Back Up
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press "erase and sync" or "cancel"
my problem: i don't want my ipod shuffle's contents erased because i have a lot of contents from cds i burned. these songs from the cds are not in the library! but they're all in the library of the other computer. now i can't even buy songs because ipod is not synced. please help!

Is there a way to dock a 2nd gen ipod shuffle with another PC without erasing and syncing with the new PC? I want to be able to sync my ipod with my home PC and then be able to plug it in at work and view the tracks on the shuffle. I don't want to erase anything, just view the tracks in Itunes on the 2nd PC. Is there a way to do this?

Is there a way to use ipod with new computer without erasing entire library

I'm not really tech-savvy, but I'm tossing my old computer and getting a new one - is there a way to use my ipod on my new computer without erasing my existing library? It won't let me make changes to my ipod and wants me to erase everything that is on there right now - HELP!

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Once you are safely connected there are a few things you can do to restore your iTunes from the iPod. If you have any iTMS purchases the transfer of purchased content from the iPod to authorised computers was introduced with iTunes 7. A paragraph on it has been added to this article: Transfer iTunes Store purchases using iPod
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TuneJack Windows Only
iPod2PC Windows Only
iGadget Windows Only
iDump Windows Only
iRepo Windows Only
iPodRip Mac & Windows
YamiPod Mac and Windows Versions
Music Rescue Mac & Windows
iPodCopy Mac and Windows Versions
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Whichever of these retrieval methods you choose, keep your iPod in manual mode until you have reloaded your iTunes and you are happy with your playlists etc then it will be safe to return it auto-sync. I would also advise that you get yourself an external hard drive and back your stuff up, relying on an iPod as your sole backup is not a good idea and external drives are comparatively inexpensive these days, you can get loads of storage for a reasonable outlay.

DrawRect without erasing content?

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