private void PrepareHeader()
{
m_BmpInfo = BITMAPINFO.Create();
m_BmpInfo.bmiHeader.biWidth = m_Width;
m_BmpInfo.bmiHeader.biHeight = -m_Height; // top down DIB
m_BmpInfo.bmiHeader.biPlanes = 1;
m_BmpInfo.bmiHeader.biBitCount = 32; // 0xXXRRGGBB
m_BmpInfo.bmiHeader.biCompression = BitmapCompressionMode.BI_RGB;
m_BmpInfo.bmiHeader.biSizeImage = 0;
m_BmpInfo.bmiHeader.biXPelsPerMeter = 10;
m_BmpInfo.bmiHeader.biYPelsPerMeter = 10;
m_BmpInfo.bmiHeader.biClrUsed = (uint)DibColorMode.DIB_RGB_COLORS;
}
