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NSImageView does not update on setNeedsDisplay

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NSImageView does not update on setNeedsDisplay

Subject: NSImageView does not update on setNeedsDisplay
From: Eric Smith <email@hidden>
Date: Thu, 17 Nov 2005 20:24:56 -0800

I've downloaded several Apple code samples, wherein an NSImageView's image is changed. After the image is changed, a simple call to [imageView setNeedsDisplay:YES] is sufficient to update the image in a GUI. However, when I do this in my code, the image is not updated in the GUI.

I'm changing the bitmap data. When I change the data, I have to get the NSImageView's cell, and do [viewCell setImage:nil]. Then I can do a [viewCell setImage:theImage], and the image will be updated in the GUI. What am I doing wrong? What needs to be done in order for an NSImageView's image to be updated in a GUI?

Thanks,
Eric
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