Re: Drawing on Another App's CGDisplayCapture
Re: Drawing on Another App's CGDisplayCapture
- Subject: Re: Drawing on Another App's CGDisplayCapture
- From: David Duncan <email@hidden>
- Date: Tue, 16 Sep 2008 16:02:07 -0700
On Sep 16, 2008, at 3:44 PM, Greg Hoover wrote:
I'm building a very similar function to the one described by Ben,
but using PowerPoint -- I have an overlay window that is supposed to
show auxiliary info during a PowerPoint presentation. I've verified
that the drawing routines are running on my overlay window, but the
updates are never shown on the screen (I assume because PowerPoint
captures the display). From other postings it seems to be that
there is no way to promote the redrawn state of the overlay window
to the screen until the app releases the display, yes? Are there
any known workarounds for this?
If the application is truly capturing the display, then no you cannot
draw over that application. However, it is possible that the
application is simply putting a window above yours (and all others) in
which case you simply need to change the window level of your window.
--
David Duncan
Apple DTS Animation and Printing
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