To support this rendering mechanism, a source must be able to receive and process the following messages:
This message is posted by the target to the window indicated by the hwndItem field in the DRAGITEM data structure to request information regarding the object. Note that WM_DDE_INITIATE is not required because the target already has the handle of the window it wants to converse with. This message is sent for all Move and Copy operations.
This message is posted by the target to the window indicated by the hwndItem field in the DRAGITEM data structure order to maintain a hot link to the object.
This message is posted by the target to the window indicated by the hwndItem field in the DRAGITEM data structure to terminate a hot link to the object.
This message is posted by the target to the window indicated by the hwndItem field in the DRAGITEM data structure to terminate a conversation.
To support this rendering mechanism, a target must be able to receive and process the following messages:
This message is posted to the target by the source to deliver the requested information regarding the object.
This message is posted to the target by the source to acknowledge a WM_DDE_ADVISE or WM_DDE_UNADVISE message.
This message is posted to the target by the source to end a conversation.