public static Bitmap GetEntireDesktopImage() { IntPtr m_HBitmap; WIN32_API.SIZE size; IntPtr hDC = WIN32_API.GetDC(WIN32_API.GetDesktopWindow()); IntPtr hMemDC = WIN32_API.CreateCompatibleDC(hDC); size.cx = WIN32_API.GetSystemMetrics(WIN32_API.SM_CXSCREEN); size.cy = WIN32_API.GetSystemMetrics(WIN32_API.SM_CYSCREEN); m_HBitmap = WIN32_API.CreateCompatibleBitmap(hDC, size.cx, size.cy); if (m_HBitmap != IntPtr.Zero) { IntPtr hOld = (IntPtr)WIN32_API.SelectObject(hMemDC, m_HBitmap); WIN32_API.BitBlt(hMemDC, 0, 0, size.cx, size.cy, hDC, 0, 0, WIN32_API.SRCCOPY); WIN32_API.SelectObject(hMemDC, hOld); WIN32_API.DeleteDC(hMemDC); WIN32_API.ReleaseDC(WIN32_API.GetDesktopWindow(), hDC); return(Image.FromHbitmap(m_HBitmap)); } return(null); }
public static Bitmap GetPartialDesktopImage(int x, int y, int w, int h) { IntPtr m_HBitmap; IntPtr hDC = WIN32_API.GetDC(WIN32_API.GetDesktopWindow()); IntPtr hMemDC = WIN32_API.CreateCompatibleDC(hDC); m_HBitmap = WIN32_API.CreateCompatibleBitmap(hDC, w, h); if (m_HBitmap != IntPtr.Zero) { IntPtr hOld = (IntPtr)WIN32_API.SelectObject(hMemDC, m_HBitmap); WIN32_API.BitBlt(hMemDC, 0, 0, w, h, hDC, x, y, WIN32_API.SRCCOPY); WIN32_API.SelectObject(hMemDC, hOld); WIN32_API.DeleteDC(hMemDC); WIN32_API.ReleaseDC(WIN32_API.GetDesktopWindow(), hDC); return(Image.FromHbitmap(m_HBitmap)); } return(null); }