Owner draw controls, bounds and real values

I found, that there is a difference of the values for Bounds and values you get with OnSizeChange in custom renderers on Android. It seems, that the values of Bounds are device independent, while values in OnSizeChange are device dependent.

A example: if you have a view, which is on a mdpi device 40 x 40 pixels, than you will get on a hdpi 40 x 40 as result of Bounds, but you get 60 x 60 as parameter for width and height in the OnSizeChanged event. And if you want to draw something on the view, you have to use the values of OnSizeChanged instead of the Bounds values.

Is there a property, which returns the correct values for the view, so that it could be used with my own drawing routine?