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Re: [NSImage] Bug in System Preferences? [solved]
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Re: [NSImage] Bug in System Preferences? [solved]


  • Subject: Re: [NSImage] Bug in System Preferences? [solved]
  • From: Iceberg-Dev <email@hidden>
  • Date: Sat, 23 Oct 2010 01:07:45 +0200

On Oct 22, 2010, at 12:48 AM, Iceberg-Dev wrote:

I'm currently playing with a screen saver.

Problem:
--------

It draws correctly in fullscreen mode or in SaverLab but does not in the preview mode of the 'Desktop & Screen Saver' pane of the System Preferences.

Basically, in #fail mode, it draws the first frame and then does not refresh.

It works on Mac OS X 10.4 but does not on Mac OS X 10.5 and 10.6.

[...]

QUESTION:
---------

What can be done to address this behavioral incoherence in System Preferences?

I solved the issue on Mac OS X 10.6 by calling lockFocusOnRepresentation: and unlockFocus before and after I refresh the bitmap buffer.


Funnily enough, this bug also exists with the CoreGraphics API.

CopyBits, I miss you.


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 >[NSImage] Bug in System Preferences? (From: Iceberg-Dev <email@hidden>)

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