Message: 4
Given the template project file for an SDL application in Project
Builder, how can I modify it so that it adds menu options into the
application menu? I would like these since my game is going to be
strictly a windowed desktop affair. Basically, at the minimum, I would
like to have Quit available in the application menu, but other options
such as New Game would also be useful, even though I have my own
in-game interface.
After browsing through SDLMain.m, it appears that some Obj-C could be
used to simply add the menu items there, but I don’t know Cocoa or
Obj-C, so I don’t really know how to do so! Also, how easy would it be
to get the New Game menu item to send a message to my C code? Any
example code would be very much appreciated!
If you’ve played with Cocoa at all, you’ve probably seen those .nib
resource files and edited them in Interface Builder. If not, I suggest
you do this first and figure out how the actions and outlets work.
In earlier versions of SDL on Mac OS X, we actually required a .nib
file - for mapping the file->quit menu item to the SDL_Quit event. This
was revised some time ago so that the menu was built by hand, so no
.nib file is is required (btw - the empty file menu is a bug).
So, how to re-enable this old behavior? If you look at SDLMain.m,
you’ll see a macro #define SDL_USE_NIB_FILE 0, change that to #define
SDL_USE_NIB_FILE 1. Then copy SDLMain.nib from
SDL.framework/Contents/Resources into your project. Finally, go to your
target settings (command-option-e), and in the Cocoa section make the
main nib file SDLMain.nib and the main class SDLMain.
Now, you should be able to open up SDLMain.nib (that you copied to your
project), and add new menu items. Of course, you’ll have to add
connections and new actions to SDLMain - but if you’ve gone through the
Cocoa tutorials this should be a snap (see
http://developer.apple.com/documentation/Cocoa/index.html to get
started).
I should really create some more project templates for this stuff. I
can already think of several:
- SDL Cocoa/nib Application
- SDL OpenGL Application
- SDL Custom NSView ApplicationOn Thursday, July 17, 2003, at 03:01 PM, sdl-request at libsdl.org wrote:
Date: Thu, 17 Jul 2003 00:43:46 +0100
From: Joseph Humfrey
To: SDL Mailing List
Subject: [SDL] OS X: Extra menu items, eg quit
Reply-To: sdl at libsdl.org
