Appends a Unicode string to the end of this document.
[in] Pointer to a null-terminated string containing the text.
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
The method succeeded.
The method was unable to add the characters.
This method generates IDebugDocumentTextEvents notifications.
If this method is called after AddDeferredText has been called, E_FAIL is returned.