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Re: Components on top of a QCView?

I'm wondering if there is a way to have components on top of a QCView?
I'd like to have an app with a window whose background is a QCView. I
will have components on top of the view with which the user will
interact. In my tests so far, it seems like anything on top of the
QCView is hidden when you run it. Is this always the case, or is there
a way around it?

Quartz Composer does not render in a window, but actually in an OpenGL surface above the window - that's why you cannot see what's beneath it.

The way to draw on top of a QCView is to put another NSWindow on top, attached as child window on the primary window (look for -[NSWindow addChildWindow:] or something). Then you need to have the background of that child window be transparent (clear it with [NSColor clearColor]) and tell the window server about it: -setAlpha:0.9999 and -setOpaque:NO I believe are the NSWindow methods to use.

________________________________________________________
Pierre-Olivier Latour                            email@hidden
Quartz Composer Architect                Graphics & Imaging Team

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 >Components on top of a QCView? (From: patrick <email@hidden>)



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