How to drag an image view within a window using swift (OS X not IOS)

Question

I am creating a Mac application but having difficulty when dragging a window with an image on the view. Basically I can drag the main window but unable to drag the window when clicking and dragging the image view.

I can enable dragging on the main window with "window.movableByWindowBackground = true" seems to work but unable to get this working when dragging the image view on the window.

Any help would be greatly appreciated.

Answer 1

The trick is to subclass your NSImageView and override the mouseDownCanMoveWindow property:

class MyImageView: NSImageView {

    override var mouseDownCanMoveWindow:Bool {
        return true
    }

}