Re: Drag and Drop from NSOpenGLView
Re: Drag and Drop from NSOpenGLView
- Subject: Re: Drag and Drop from NSOpenGLView
- From: "E. Wing" <email@hidden>
- Date: Mon, 10 Apr 2006 11:27:49 -0700
[bump] Still hoping for a response :)
> Date: Thu, 6 Apr 2006 17:35:10 -0700
> From: "E. Wing" <email@hidden>
> Subject: Drag and Drop from NSOpenGLView
> To: email@hidden
> Message-ID:
> <email@hidden>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I'm trying to implement drag-and-drop from an NSOpenGLView which will
> result in a screenshot being taken from the OpenGL view and dropped to
> wherever. I seem to have gotten the basics covered with the
> glReadPixels, NSPasteboard, and dragImage. However, I am having
> trouble with some of the details.
>
> First, when I start dragging the view, the image does appear. However,
> my image is totally opaque. I noticed that with shipping Cocoa
> applications, the images are semi-transparent. What is the
> easiest/best way to faithfully reproduce this affect?
>
> Second, I have specified my type as NSTIFFPboardType. I notice that if
> I drag to my desktop, a TIFF gets created. But I would prefer that a
> PNG (or maybe JPEG) be created instead. I know that the built-in
> screen capture in OS X writes to PNG, so it seems like there should be
> an easy way.
>
> Thanks,
> Eric
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