The message was processed by the recipient
and it is ready to perform the rendering operation. The target of the drop
sends a DM_RENDER message to request
the rendering with a specific rendering mechanism and format.
FALSE
The message either was not processed by the recipient,
or it is unprepared to perform the rendering. The hwndItem field
in DRAGITEM may not be properly
initialized, and therefore the target should not send a DM_ENDCONVERSATION
message.