Converting an UnsafeMutablePointer to a [String:AnyObject]

Question

I have passed a [String:AnyObject] as userdata to addToolTipRect..

var myObject = [String:AnyObject]()

self.addToolTipRect( binCoordinates, owner: self, userData: &myObject )

So, in stringForToolTip, I need to convert it back to [String:AnyObject]

var theData = [String:AnyObject](data) does not work.

How do you pass the dictionary as userdata? Does this help http://stackoverflow.com/questions/33294620/how-to-cast-self-to-unsafemutablepointervoid-type-in-swift? — Martin R, Nov 17 '15 at 16:33
The other question you pointed to leads to a compile error that T could not be inferred. — ericg, Nov 17 '15 at 16:44
func addToolTipRect(_ aRect: NSRect, owner anObject: AnyObject, userData data: UnsafeMutablePointer) -> NSToolTipTag — ericg, Nov 17 '15 at 17:08
func view(_ view: NSView, stringForToolTip tag: NSToolTipTag, point point: NSPoint, userData data: UnsafeMutablePointer) -> String — ericg, Nov 17 '15 at 17:08

score 0 · Accepted Answer · answered Nov 17 '15 at 17:13

// userData: UnsafeMutablePointer<Void>

let pUserData = UnsafeMutablePointer<Dictionary<String,AnyObject>>(userData)

// you can accsees all properties and functions via

pUserData.memory.myPropery // read or write myObject.myProperty
pUserData.memory.foo()     // execute myObject.foo()

Converting an UnsafeMutablePointer to a [String:AnyObject]

1 Answers1