Hi all, This is my first question here. I'm trying to port a cross-platform app to OS X using Cocoa. I've already got good results so far, but sometimes it's difficult to find out how things are supposed to work.
Currently I'm porting a custom slider control that needs to draw parts of the its interface, like the slider bar and the knob, in the OS style. The code that I currently have draws this to a temporary bitmap to avoid flicker on Windows and I'd like to keep it like this as much as possible to avoid forking the code too much. It looks like NSSliderCell will be able to draw the necessary parts, but the documentation says that you need to call lockFocus on the view that you want to draw to first. But I would like to draw in a CGContextRef that I have which draws into a bitmap. Now I'm wondering what lockFocus on NSView does exactly. Does it just activate a graphics context that works on this view? Specifically, would it work to do: NSGraphicsContext *gc = [NSGraphicsContext contextWithGraphicsPort: myCGContextRef]; [NSGraphicsContext setCurrentContext:gc]; to get NSSliderCell to draw into any custom CGContextRef? Thanks for any comments! Best regards, Frederik Slijkerman _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
