Question

I’m being working in making copy and paste operations on my diagramming application.
Therefore, I need to…

• Convert a WPF Bitmap to a D3DImage (for later implement “Copy”), and

• Convert a D3DImage to a WPF Bitmap (for later implement “Paste”).

Notice that this requieres “Interop” between the WPF Application and the native Win-32.

How to do this, as short as possible (two functions, ideally)?

Answer 1

You probably found your answer in the past half year but here is how to convert a D3DImage in WPF to BitmapSource (I used vb.net in this case):

Public Function GetCurrentImage() As BitmapSource

        Dim width As Integer = D3DImage.PixelWidth
        Dim height As Integer = D3DImage.PixelHeight

        Dim dv As New DrawingVisual()
        Using dc As DrawingContext = dv.RenderOpen()
            dc.DrawImage(D3DImage, New Rect(0, 0, width, height))
        End Using

        Dim rtb As New RenderTargetBitmap(width, height, 96, 96, PixelFormats.Pbgra32)
        rtb.Render(dv)

        Return BitmapFrame.Create(rtb)
    End Function

You can find it in C# in the WPFMediaKit.