void TestGetImage()
{
int hr;
int iSize = 0;
IntPtr ip;
hr = m_ibv.GetCurrentImage(ref iSize, IntPtr.Zero);
DsError.ThrowExceptionForHR(hr);
ip = Marshal.AllocCoTaskMem(iSize);
hr = m_ibv.GetCurrentImage(ref iSize, ip);
DsError.ThrowExceptionForHR(hr);
Marshal.FreeCoTaskMem(ip);
}
public override bool GetCurrentImage(out BITMAPINFOHEADER header, out IntPtr dibFull, out IntPtr dibDataOnly)
{
int bufferSize = 0;
int hr = BasicVideo2.GetCurrentImage(ref bufferSize, IntPtr.Zero); // get the required buffer size first
if (DsHlp.SUCCEEDED(hr))
{
dibFull = Marshal.AllocCoTaskMem(bufferSize);
hr = BasicVideo2.GetCurrentImage(ref bufferSize, dibFull); // actually get the image
if (DsHlp.SUCCEEDED(hr))
{
header = (BITMAPINFOHEADER)Marshal.PtrToStructure(dibFull, typeof(BITMAPINFOHEADER));
dibDataOnly = new IntPtr(dibFull.ToInt64() + Marshal.SizeOf(typeof(BITMAPINFOHEADER)));
return(true);
}
}
header = new BITMAPINFOHEADER();
dibDataOnly = IntPtr.Zero;
dibFull = IntPtr.Zero;
return(false);
}