To receive notifications, a DLL application must register for the notifications by object type. This registration must be done for each instance of a particular object.

For example, the file:

• DsAddinDocument.h, included in the DraftSight API COM native C++ interface add-in template, automatically registers these events:

BEGIN_SINK_MAP(CDsAddinDocument)
    SINK_ENTRY_EX( IDC_DSAPPLICATIONEVENT, DIID__IDocumentEvents, dsDocument_DestroyNotify_id, OnDestroyNotify )
    SINK_ENTRY_EX( IDC_DSAPPLICATIONEVENT, DIID__IDocumentEvents, dsDocument_FileSavePostNotify_id, OnFileSavePostNotify )
    SINK_ENTRY_EX( IDC_DSAPPLICATIONEVENT, DIID__IDocumentEvents, dsDocument_ModifyNotify_id, OnModifyNotify )
END_SINK_MAP()

 

• dsAddinDocument.h, included in the DraftSight API C++ interface add-in template, automatically registers and unregisters these events:

DsAddinDocument(dsDocument_c *dsDoc) : m_dsDoc(dsDoc) {

RegisterDocumentDestroyNotifyHook(m_dsDoc);

RegisterDocumentFileSavePostNotifyHook(m_dsDoc);

RegisterDocumentModifyNotifyHook(m_dsDoc);

}

~DsAddinDocument() {

UnRegisterDocumentDestroyNotifyHook(m_dsDoc);

UnRegisterDocumentFileSavePostNotifyHook(m_dsDoc);

UnRegisterDocumentModifyNotifyHook(m_dsDoc);

}