public EngineHolder(string projectId)
{
try
{
engineLoader = new OutprocLoader();
// When a process finishes normally, all COM objects are released and work processes hosting these objects also finish
// normally. If the process terminates abnormally (hard exception or manually killed) the COM objects are not released
// and work processes will remain loaded. To address this issue and make your server more robust you can make
// each work process watch if its parent process is still alive and terminate if not.
var processControl = (IHostProcessControl)engineLoader;
processControl.SetClientProcessId(Process.GetCurrentProcess().Id);
process = Process.GetProcessById(processControl.ProcessId);
engine = engineLoader.GetEngineObject(projectId);
}
catch (COMException exception)
{
var hResult = (uint)exception.ErrorCode;
if (hResult == 0x80070005)
{
// To use LocalServer under a special account you must add this account to
// the COM-object's launch permissions (using DCOMCNFG or OLE/COM object viewer)
throw new Exception(@"Launch permission for the work-process COM-object is not granted.
Use DCOMCNFG to change security settings for the object. (" + exception.Message + ")");
}
throw;
}
isEngineLocked = false;
engineUsageCount = 0;
}
private AbbyyManager()
{
engineLoader = new InprocLoader();
engine = engineLoader.GetEngineObject(licens);
prepareImageMode = engine.CreatePrepareImageMode();
prepareImageMode.EnhanceLocalContrast = true;
}