public MemoryBitmap(int w, int h)
{
m_hDC = User32.GetDC(default(HWND));
m_bmp = Gdi32.CreateCompatibleBitmap(m_hDC, w, h);
DC = Gdi32.CreateCompatibleDC(m_hDC);
m_hOrgBMP = Gdi32.SelectObject(DC, m_bmp.Value);
}
public static extern int GetDIBits(
HDC hdc,
HBITMAP hbm,
UINT start,
UINT cLines,
byte[] lpvBits,
ref BITMAPINFOHEADER lpbmi,
DIB usage
);