#import class wxEvtHandler; @interface RetinaHelperImpl : NSObject { NSView *view; wxEvtHandler* handler; } -(id)initWithView:(NSView *)view handler:(wxEvtHandler *)handler; -(void)setViewWantsBestResolutionOpenGLSurface:(BOOL)value; -(BOOL)getViewWantsBestResolutionOpenGLSurface; -(float)getBackingScaleFactor; @end