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You should call SDL_SetMainReady(), and then customize the QIOSApplicationDelegate like this, in your application code:
/* Additional support for applications mixing Qt and SDL */
@interface QIOSApplicationDelegate : UIResponder <UIApplicationDelegate>
@end
extern "C"
{
void SDL_OnApplicationWillResignActive();
void SDL_OnApplicationDidEnterBackground();
void SDL_OnApplicationWillEnterForeground();
void SDL_OnApplicationDidBecomeActive();
}
@interface QIOSApplicationDelegate (SDL)
- (void)applicationWillResignActive:(UIApplication*)application;
- (void)applicationDidEnterBackground:(UIApplication*)application;
- (void)applicationWillEnterForeground:(UIApplication*)application;
- (void)applicationDidBecomeActive:(UIApplication*)application;
@end
@implementation QIOSApplicationDelegate (SDL)
- (void)applicationWillResignActive:(UIApplication*)application
{
SDL_OnApplicationWillResignActive();
}
- (void)applicationDidEnterBackground:(UIApplication*)application
{
SDL_OnApplicationDidEnterBackground();
}
- (void)applicationWillEnterForeground:(UIApplication*)application
{
SDL_OnApplicationWillEnterForeground();
}
- (void)applicationDidBecomeActive:(UIApplication*)application
{
SDL_OnApplicationDidBecomeActive();
}
@end // QIOSApplicationDelegate