public static byte[] GetByteArray(Bitmap image)
{
IntPtr hbmOld;
IntPtr hBitmap;
IntPtr hDC;
// create infoheader
BITMAPINFOHEADER bih = new BITMAPINFOHEADER(1, image.Height, image.Width);
// set black and white for 1 bit color palette
// create fileheader and get data size
uint sizeOfImageData;
BITMAPFILEHEADER bfh = new BITMAPFILEHEADER(bih, out sizeOfImageData);
// create device context in memory
hDC = Win32.CreateCompatibleDC(IntPtr.Zero);
// create a 1 bpp DIB
IntPtr pBits = IntPtr.Zero;
hBitmap = Win32.CreateDIBSection(hDC, ref bih, 1, ref pBits, IntPtr.Zero, 0);
// selet DIB into device context
hbmOld = Win32.SelectObject(hDC, hBitmap);
using (Graphics g = Graphics.FromHdc(hDC))
{
g.DrawImage(image, 0, 0);
}
byte[] imageData = new byte[sizeOfImageData];
byte[] fileData;
using (MemoryStream ms = new MemoryStream((int)bfh.bfSize))
{
using (BinaryWriter w = new BinaryWriter(ms))
{
bfh.Store(w);
// store bitmapinfoheader with 1 bpp color palette for black and white
bih.Store(w, new uint[] { (uint)0x0, (uint)0xffffff });
// copy image data into imageData buffer
Marshal.Copy(pBits, imageData, 0, imageData.Length);
// write imageData to stream
w.Write(imageData);
w.Close();
}
fileData = ms.GetBuffer();
ms.Close();
}
// select old object
if (hbmOld != IntPtr.Zero)
{
Win32.SelectObject(hDC, hbmOld);
}
// delete memory bitmap
if (hBitmap != IntPtr.Zero)
{
Win32.DeleteObject(hBitmap);
}
// delete memory device context
if (hDC != IntPtr.Zero)
{
Win32.DeleteDC(hDC);
}
return(fileData);
}
public static Bitmap CreateDIB(int x, int y)
{
//Set up a BitmapHeader
Int32 Depth = DetermineColorDepth.getdepth();
BITMAPINFOHEADER bmpInfo = new BITMAPINFOHEADER((short) Depth, x, y);
BITMAPFILEHEADER bmpFile = new BITMAPFILEHEADER(bmpInfo);
byte[] buffer = new byte[bmpFile.bfSize];
MemoryStream m = new MemoryStream(buffer);
using (BinaryWriter writer = new BinaryWriter(m))
{
bmpFile.Store(writer);
bmpInfo.Store(writer, false);
m.Seek(0, SeekOrigin.Begin);
return new Bitmap(m);
}
}