Pass Bitmap object to unmanaged code

Question

I have the following function in C++ managed (ref) class:

public static void Transform(Bitmap^ img);

I want to call it from C# managed code. What I do is this:

Bitmap image = new Bitmap(100, 100);
MyClass.Transform(image);

Is this correct, or do I need to use fixed statement? If so, then how?

Thank you.

voted for close due to duplicate: http://stackoverflow.com/questions/661016/how-can-i-pass-a-net-bitmap-to-a-native-dll — Davy Landman, Aug 10 '09 at 07:53

score 1 · Accepted Answer · answered Aug 10 '09 at 06:39

1

You need to lock the bitmap's backing memory as shown here.

answered Aug 10 '09 at 06:39

Eric J.

1 Answers1