 | | | Yet more problems... fullscreen mode | Yet more problems... fullscreen mode 2004-01-15 - By Dietrich Epp
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On Jan 13, 2004, at 8:18 PM, Dennis Piatkowski wrote:
> Okay, I made a great little interface for this thing with a subclass
> of NSOpenGLView that I embed in a window for normal windowed
> operation. It takes care of event stuff for me nicely.
>
> How do I create a window on a screen that I've stolen with
> CGDisplayCapture() and [context setFullScreen]? Does this mean I
> cannot use Cocoa at all if I want a fullscreen game? How does that
> make sense?
My guess is that I'll say a few things you have heard before.
Check out Omni's source code.
http://www.omnigroup.com/developer/gamedevelopment/gdc2001/
The simple answer is that capturing a display steals it from the Quartz
compositor... so you can't put windows on it. However, you can go
full-screen other ways, such as making a big window and hiding the dock
and menu bar, or using the Quicktime APIs (BeginFullScreen, etc.).
The reason it makes sense is that when programs capture the display,
the intent is to do it behind Quartz's back. That way Quartz doesn't
put the dock and the menu bar on top of your game, and your game
doesn't make all the open windows move around. I keep iTunes in the
lower right corner, and after playing Diablo II I often find it in the
middle of the screen. So CGDirectDisplay.h is meant for just that:
direct access to the display.
And you are still free to use Cocoa, you just can't put new windows up.
<abestos>
Feel free to ignore this part. When I see a window, I expect it to be
in front of the desktop. If a save dialog comes up, I expect to be
able to go to the Finder and poke around a little, maybe because I
forgot where I saved similar items last time. Similarly, when I play a
game full-screen, it's because I don't want the mood broken. I was
happy when I discovered that SNES9x could save game states without ever
leaving full-screen mode, and without bringing me back to Aqua. Aqua's
for work.
</abestos>
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