Question

Is there any way to get a BITMAPV5HEADER out of a Bitmap object in C#? Or just get the values that are in their? I need to get some ColorSpace information out of a bitmap and can’t see a way to do this in C#.

Answer 1

Doesn’t seem to be an easy way to do it, but a hackish (and probably very buggy) way would be to read in the raw data and convert it to a BITMAPV5HEADER structure.

Structure

[StructLayout(LayoutKind.Sequential)] public struct BITMAPV5HEADER {   uint bV5Size;   long bV5Width;   long bV5Height;   int bV5Planes;   int bV5BitCount;   uint bV5Compression;   uint bV5SizeImage;   long bV5XPelsPerMeter;   long bV5YPelsPerMeter;   uint bV5ClrUsed;   uint bV5ClrImportant;   uint bV5RedMask;   uint bV5GreenMask;   uint bV5BlueMask;   uint bV5AlphaMask;   uint bV5CSType;   IntPtr bV5Endpoints;   uint bV5GammaRed;   uint bV5GammaGreen;   uint bV5GammaBlue;   uint bV5Intent;   uint bV5ProfileData;   uint bV5ProfileSize;   uint bV5Reserved; } 

Helper Method

public static T RawStructureRead<T>(Stream stream) where T : struct {   T @struct;   int size = Marshal.SizeOf(typeof(T));    BinaryReader reader = new BinaryReader(stream);   byte[] buffer = reader.ReadBytes(size);    GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);   @struct = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));   handle.Free();    return @struct; } 

Usage

using (FileStream stream = File.OpenRead('...')) {   BITMAPV5HEADER header = RawStructureRead<BITMAPV5HEADER>(stream); }