I have not done this approach lately, but try these suggestions.  You could set the fill colour to Pg_TRANSPARENT, 
unless you are using a PtOSContainer.  If you are using a PtOSContainer, set the fill colour to something not common, 
then set the chroma on the layer to that value, and no draw.

-----Original Message-----
From: Jimmy Townsend [mailto:community-noreply@qnx.com] 
Sent: July-18-12 3:22 PM
To: photon-graphics
Subject: Transparent Photon background

Is there any way to have Photon's background either not be drawn, or drawn as "transparent"?

I'm trying to render some graphics on layer 0, and have some Photon objects overlay them, with Photon on layer 1.  The 
problem is, Photon draws a background which totally obscures what's rendered on layer 0.

Thanks!



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Photon microGUI
http://community.qnx.com/sf/go/post94334
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