On Jul 24, 2012, at 7:47 PM, Tom Hohensee wrote: > Anyone familiar with CGDisplayRegisterReconfigurationCallback callback and > fullscreen when connecting and disconnecting an external monitor? > I have written an application that places a custom NSView into fullscreen > (using enterfullscreenmode with options) on an external monitor while the > main window remains on the main (built-in screen). The view enters and exits > as expected but I was trying to cover all my bases and have the fullscreen > exit gracefully if the external monitor is unplugged while my application is > running. In my research I came across > CGDisplayRegisterReconfigurationCallback.
> When the application is not in fullscreen my application receives and the > callback function works as expected. However, when the view is in fullscreen > the callback function is not called when the monitor is unplugged. In fact > the OS does not update the screen configuration until I exit fullscreen > (through a test button I implemented on the main window). I suspect you're not receiving the callback because the display is captured. The docs for -[NSView enterFullScreenMode:withOptions:] explain how to avoid capturing the display. Capturing the display means that you're taking over sole responsibility and access to it. It also means that other apps won't be notified when that display's configuration is changed. (For example, the Finder won't rearrange your desktop icons if the display is set to a low-resolution mode.) It's not obvious to me that that would include preventing your own app from being informed when the display is disconnected, but apparently it does. You might file a bug with Apple. Also, you might ask on the quartz-dev list. Regards, Ken _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
