[SDL] Showing a UIViewController on an SDL based iOS project

Tim Angus tim at ngus.net
Fri Jul 15 10:21:42 PDT 2011

Maybe this is useful for other people. It needs to be compiled as .mm in 
order to be callable from C++.

void PresentModalView( const char* viewName )
   SDL_SysWMinfo info;
   SDL_VERSION( &info.version );

   if( SDL_GetWindowWMInfo( window, &info ) )
     UIWindow* uiWindow = (UIWindow*)info.info.uikit.window;
     UIView* view = [uiWindow.subviews objectAtIndex:0];
     id nextResponder = [view nextResponder];
     if( [nextResponder isKindOfClass:[UIViewController class]] )
       UIViewController* viewController =

       // You can do some terrifying things with Objective-C
       NSString* className = [NSString stringWithUTF8String:viewName];
       Class ViewControllerClass = NSClassFromString(className);
       id subviewController = [[[ViewControllerClass alloc]
         initWithNibName:className bundle:nil] autorelease];

       [viewController presentModalViewController:
         subviewController animated:YES];

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