swift - NSView/NSResponder smartMagnify: -


i trying implement smartmagnify: in nsview, never called. have rotate:, magnify:, etc., , being called - need receive message? i've searched documentation, extremely sparse, , can find no reason why it's not called.

here's as think relevant of code...

class figosxlayerview: figosxlayerviewbase /* nsview subclass */ {     var layerviewcontroller: figosxlayervc?     private var _scale: cgfloat = 1.0      override func draw(_ dirtyrect: nsrect) {         self.properties.showselectionhighlight = true         self.properties.showannotation = true         self.properties.showpoints = true         super.draw(dirtyrect)     }      // ************************     // mark: zoom, pan, rotate     // ************************     override func magnify(with event: nsevent) {         self._scale = 1 + event.magnification         self.layerviewcontroller?.scale(self._scale)     }      override func rotate(with event: nsevent) {         self.layerviewcontroller?.rotate(cgfloat(event.rotation.toradians))     }      override func scrollwheel(with event: nsevent) {         self.layerviewcontroller?.translate(dx: event.deltax, dy: -event.deltay)     }      override func smartmagnify(with event: nsevent) {         swift.print("smart magnify") // not called     }     // ... }

just through superstition, have tried setting myself first responder, in case that, makes no difference.


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