public static Context CreateContextFromType(Platform platform, DeviceType type, ContextNotify callback, object userData)
{
var pty = platform != null ? new ContextProperty[] { new ContextProperty(ContextProperties.Platform, platform.handle), ContextProperty.Zero } : null;
var pfn = (ContextNotifyData)null;
var pcb = (ContextNotifyInternal)null;
var ptr = IntPtr.Zero;
if (callback != null)
{
pfn = new ContextNotifyData(callback, userData);
pcb = ContextNotifyData.Callback;
ptr = pfn.Handle;
}
var err = ErrorCode.Success;
var ctx = NativeMethods.clCreateContextFromType(pty, type, pcb, ptr, out err);
if (err != ErrorCode.Success)
{
throw new OpenClException(err);
}
return(new Context(ctx, pfn));
}