SetDIBitsToDevice problem - reading RGB file

Hi,

I am trying to read an RGB File and display the result in a picturebox using SetDIBitsToDevice API (I know there is StretchDIBits API too, but right now I am focusing on one API and get to display the image), but no matter what I do, i end up with a runtime error of Invalid Argument on API Call. I am unable to calculate which parameter is wrong.

My Code so far

Code:

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I am using this API on Paint event of picturebox
//ActualImageWidth = System.Drawing.Image.FromFile("test.rgb").Width;
                //ActualImageHeight = System.Drawing.Image.FromFile("test.rgb").Height;

                //string test;
                //System.IO.StreamReader sr = new System.IO.StreamReader("test.rgb", Encoding.ASCII);
                //test = sr.ReadToEnd();
                //sr.Close();
                byte[] data = System.IO.File.ReadAllBytes("test.rgb");
                //System.IO.FileStream fs = System.IO.File.OpenRead("test.rgb");
                //System.IO.BinaryReader br = new System.IO.BinaryReader(fs);
                //MessageBox.Show(br.ReadString());
                //System.IO.MemoryStream ms = new System.IO.MemoryStream(data);
                //Bitmap bmp = new Bitmap(ms);
                //pictureBox1.Image = Image.FromHbitmap(bmp.GetHbitmap());

                byte[] data3 = (new ReadImage(ref data)).ReadChannels();

                PrintImage.BITMAPINFOHEADER bmiHeader = new PrintImage.BITMAPINFOHEADER();
                bmiHeader.biSize = System.Runtime.InteropServices.Marshal.SizeOf(bmiHeader);
                bmiHeader.biWidth = 400;
                bmiHeader.biHeight = -400;
                bmiHeader.biPlanes = 1;
                bmiHeader.biBitCount = 24;
                bmiHeader.biClrUsed = 0;
                bmiHeader.biClrImportant = 0;
                bmiHeader.biXPelsPerMeter = 0;
                bmiHeader.biYPelsPerMeter = 0;
                bmiHeader.biCompression = PrintImage.BI_RGB;
                bmiHeader.biSizeImage = 400 * 400;

                PrintImage.BITMAPINFO bmi = new PrintImage.BITMAPINFO(bmiHeader);
               
                IntPtr lhDC = PrintImage.GetWindowDC(pictureBox1.Handle);
                //Int16 hBMP;
                //Int16 hDCMemory;

                //IntPtr test = PrintImage.StretchDIBits(PrintImage.GetWindowDC(pictureBox1.Handle), 0, 0, (short)ActualImageWidth, (short)ActualImageHeight, 0, 0, (short)ActualImageWidth, (short)ActualImageHeight, data3, ref bmi, PrintImage.DIB_RGB_COLORS, PrintImage.SRCCOPY);
                Int16 test = PrintImage.SetDIBitsToDevice(lhDC, 0, 100, 400, 400, 0, 0, 0, 400, data3, ref bmi, PrintImage.DIB_RGB_COLORS);
                //if(PrintImage.GetDIBits(lhDC,
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
                return;
            }

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My Custom Class

Code:

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public class ReadImage
    {
        private byte[] imageByteData;
        public ReadImage(ref byte[] imageByteData)
        {
            this.imageByteData = imageByteData;
        }

        public byte[] ReadChannels()
        {
            byte[] channelData = new byte[imageByteData.Length * 3];
            for (int count = 0; count < imageByteData.Length; ++count)
            {
                channelData[3 * count] = imageByteData[count];
                channelData[3 * count + 1] = imageByteData[count];
                channelData[3 * count + 2] = imageByteData[count];
            }

            return channelData;
        }
    }

---

and API is declared as

Code:

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public struct PALETTEENTRY
        {
            public byte peRed;
            public byte peGreen;
            public byte peBlue;
            public byte peFlags;
        }
       
        public struct BITMAPINFOHEADER
        {
            public Int32 biSize;
            public Int16 biWidth;
            public Int16 biHeight;
            public Int16 biPlanes;
            public Int16 biBitCount;
            public Int32 biCompression;
            public Int32 biSizeImage;
            public Int16 biXPelsPerMeter;
            public Int16 biYPelsPerMeter;
            public Int32 biClrUsed;
            public Int32 biClrImportant;
        }
        public struct BITMAPINFO
        {
            public BITMAPINFO(BITMAPINFOHEADER bmiHeader)
            {
                this.bmiHeader = bmiHeader;
                bmiColors = new PALETTEENTRY[256];
            }
            public BITMAPINFOHEADER bmiHeader;
            public PALETTEENTRY[] bmiColors;
        }
        public struct RECT
        {
            public Int16 Left;
            public Int16 Top;
            public Int16 Right;
            public Int16 Bottom;
        }
        public const Int16 PIXELS = 3;
        public const Int32 SRCCOPY = 0xCC0020;
        public const Int16 BI_RGB = 0;
        public const Int16 DIB_RGB_COLORS = 0;
        public const Int16 GMEM_MOVEABLE = 2;
        public const Int16 RASTERCAPS = 38;
        public const Int16 RC_STRETCHDIB = 0x2000;
        public const Int16 RC_PALETTE = 0x100;
        public const Int16 PLANES = 14;
        public const Int16 BITSPIXEL = 12;
        public const Int16 SIZEPALETTE = 104;

        [System.Runtime.InteropServices.DllImport("gdi32.dll")]
        public static extern Int16 SetDIBitsToDevice(IntPtr hDC, Int16 DestX, Int16 DestY, Int16 wDestWidth, Int16 wDestHeight, Int16 SrcX, Int16 SrcY, Int32 uStartScan, Int32 uScanLines, byte[] lpBits,  ref BITMAPINFO BitsInfo, Int32 uColorUse);

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I was provided with a sample in VC++ 6, and I tried to convert it into equivalent C# code.

Please need help urgent.

Actually I need to scale, rotate and apply Anti-Aliasing filter to the image. We were told to read the channels separately. Since, there is no header information present, I am unable to create a Bitmap calss of it.

Thank you