private static void PrepareBlobBuffer(ref InteropBuffer buffer, int blobSize)
{
if (buffer.Size < blobSize)
{
if (buffer.Locked)
buffer.Unlock();
InteropBufferPool.ReleaseBuffer(buffer);
buffer = InteropBufferPool.AcquireBuffer(blobSize);
}
buffer.Lock();
}
/// <summary>
/// Prepares the <see cref="DBEVENTINFO"/> for information extraction and the blob buffer.
/// </summary>
/// <param name="eventHandle">Event handle.</param>
/// <param name="dbEventInfo">[OUT] DB event info to marshal data into.</param>
/// <param name="buffer">[OUT] Locked Blob buffer.</param>
private unsafe static void PrepareDbEventInfo(IntPtr eventHandle, out DBEVENTINFO dbEventInfo, out InteropBuffer buffer)
{
int blobSize = MirandaContext.Current.CallServiceUnsafe(MS_DB_EVENT_GETBLOBSIZE, eventHandle.ToPointer(), null);
if (blobSize == -1)
throw new MirandaException(String.Format(TextResources.ExceptionMsg_Formatable2_MirandaServiceReturnedFailure, MS_DB_EVENT_GETBLOBSIZE, blobSize.ToString()));
// Acquire a buffer for the blob
buffer = InteropBufferPool.AcquireBuffer(blobSize);
buffer.Lock();
dbEventInfo = new DBEVENTINFO(blobSize, buffer.IntPtr);
}