Borland Has a problem handling exceptions generated outside of it own code. A standard implementation WILL NOT pass back any information about the nature of exceptions thrown by DicomObjects. The only way to get Borland to pass back the information is to edit a Borland header file "utilcls.h"

Search for the define of Invoke "TAutoDriver<DISPINTF>::Invoke" There will be 2 hits. In the second of these there is the following segment:

 // Check for deferred EXCEPTION fill-in 
 if (hr == DISP_E_EXCEPTION)
    if (m_ExcepInfo.pfnDeferredFillIn)
     (*(m_ExcepInfo.fnDeferredFillIn))(&m_ExcepInfo);

 // Turn on '__CHECKHR_ON_INVOKE' when you're debugging calls using the DISP wrappers
 //

This needs to be modified to

 // Check for deferred EXCEPTION fill-in
 if (hr == DISP_E_EXCEPTION)
 {	
    if (m_ExcepInfo.pfnDeferredFillIn)
	  (*(m_ExcepInfo.pfnDeferredFillIn))(&m_ExcepInfo);
    throw Comobj::EOleException(m_ExcepInfo.bstrDescription, m_ExcepInfo.wCode, 
         m_ExcepInfo.bstrSource, m_ExcepInfo.bstrHelpFile, m_ExcepInfo.dwHelpContext);
 }	 
 // Turn on '__CHECKHR_ON_INVOKE' when you're debugging calls using the DISP wrappers
 //

With this modification made exceptions should handle as normal.