> [MonoPInvokeCallback (typeof (DrawLayerDelegate))]
> static void DrawLayer (IntPtr @this, IntPtr selector,
> CALayer layer,
> CGContext context)
> {
> // do nothing
> }
>
You can not marshal reverse callbacks with a CALayer as a parameter like
that.
Replace the above with:
static void DrawLayer (IntPtr @this, IntPtr selector, IntPtr _layer,
IntPtr _context)
{
var layer = Runtime.GetNSObject (_layer) as CALayer;
using (var context = new CGContext (_context)){
// Your code goes here.
}
}
static DrawLayerDelegate DrawLayerImplementation =
> DrawLayer;
>
> private void DisableBaseMap (UIView mapView)
> {
> // -- get rendering layer
> UIView rootView = mapView.Subviews[0];
> UIView vkmapView = rootView.Subviews[0];
> UIView vkmapCanvas = vkmapView.Subviews[0];
>
> IntPtr canvas_class = new Class
> (vkmapCanvas.GetType ()).Handle;
> IntPtr method = class_getInstanceMethod
> (canvas_class, new Selector
> ("drawLayer:inContext:").Handle);
> IntPtr new_impl =
> Marshal.GetFunctionPointerForDelegate(DrawLayerImplementation);
>
> method_setImplementation (method, new_impl);
> }
>
>
>
> It builds, runs, but then get this:
>
> *System.Runtime.InteropServices.MarshalDirectiveException* has been
> thrown
> The type `MonoTouch.CoreAnimation.CALayer' layout needs to be Sequential or
> Explicit
>
> and at the top of the stack trace:
>
> System.Runtime.InteropServices.MarshalDirectiveException: The type
> `MonoTouch.CoreAnimation.CALayer' layout needs to be Sequential or Explicit
> at (wrapper native-to-managed)
> CgMobilePOC3.UI.Touch.Views.MainMapView:DrawLayer
>
> (intptr,intptr,MonoTouch.CoreAnimation.CALayer,MonoTouch.CoreGraphics.CGContext)
>
> Any ideas what might be missing/wrong?
>
> Thanks!
>
> Dennis
>
>
>
> --
> View this message in context:
> http://monotouch.2284126.n4.nabble.com/Disable-mapkit-basemap-tp4657590.html
> Sent from the MonoTouch mailing list archive at Nabble.com.
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>
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