IosViewController not reacting when adding key command

@interface CallbackClass : NSObject

• (void) doSomething:(UIKeyCommand*)keycmd;
• (UIKeyCommand*) returnKeyCommand;

@end

@implementation CallbackClass

• (void) doSomething:(UIKeyCommand*)keycmd { NSLog(@"KEY CLICKED");

} -(UIKeyCommand*) returnKeyCommand { return [UIKeyCommand keyCommandWithInput:@"a" modifierFlags:0 action:@selector(doSomething:)]; } @end

void CppClass::bindKeyCommand() { CallbackClass* callbackClass = [[CallbackClass alloc] init];

[[UIApplication sharedApplication].keyWindow.rootViewController]
               addKeyCommand:[callbackClass returnKeyCommand]];

}

This is objective-c code that is injected into QT application with C++ and Cmake. Responder chain after executing this code:

<QUIView> <QIOSDesktopManagerView> <QIOSViewController> key commands: <UIKeyCommand: 0x12....> -> Title: Action: doSomething: Input: @"a" ...

Even if this key command is present is in the responder chain i dont have any reaction on click on magic keyboard. When i do this in the pure objective-c but not with with QT, C++, Cmake project.

I Detect key input but only when i add my custom view controller do the subview of QIOSViewController, but then i cany click anything else on my application then.

I want to be able to detect key input or somehow inject a responder into responder chain and still being able to click things on my application.