> On Aug 17, 2017, at 1:18 PM, Robert Ball <[email protected]> wrote:
> 
> Hi all, 
> 
> This page:
> 
>       
> https://developer.apple.com/library/content/releasenotes/General/APIDiffsMacOSX10_11/Objective-C/ApplicationServices.html
> 
> lists the two calls QDBeginCGContext and QDEndCGContext as having been
> removed in OS X v10.11 API.
> 
> I have a pure Carbon test program, and need a replacement for these
> calls.  We do all of our own drawing, we just use Carbon to handle the
> keyboard, mouse, and window resizing events, and to be able to hand
> Carbon our image data for refreshing the image.
> 
> What is the suggested replacement?  Is it straight-forward?

The suggested replacement would be to enable compositing mode on your window, 
and put your drawing code into a custom HIView. Your kEventControlDraw handler 
on the HIView will receive a CGContextRef parameter in the event, so you can 
just draw into that context, and not create a context from the QuickDraw port.

If it’s not feasible to switch to compositing mode, you can always just use 
dlopen/dlsym to load function pointers to those two APIs dynamically from 
QD.framework, and call them through the function pointers.

-eric

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