建议

[catzhou2002]

[DllImport("libarcsoft_face_engine.dll", EntryPoint = "ASFDetectFaces", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)] private static extern int ASFDetectFaces(IntPtr pEngine, int width, int height, int format, **byte[] imageData**, out ASF_MultiFaceInfo faceInfo);
imageData改成byte[]会方便很多。

[Thxzzzzz]

[DllImport("libarcsoft_face_engine.dll", EntryPoint = "ASFDetectFaces", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)] private static extern int ASFDetectFaces(IntPtr pEngine, int width, int height, int format, **byte[] imageData**, out ASF_MultiFaceInfo faceInfo);
imageData改成byte[]会方便很多。

感谢建议，这块我也不是很熟悉，有空我试试~