When dropping DRM_OBJECT or DRM_OS2FILE on a folder, with pDragItemhstrContainerName or pDragItemhstrSourceName defined, the Workplace Shell will perform the action, for example, Copy, Move, Shadow, and notify the source with a DM_ENDCONVERSATION message.

When dropping DRM_OS2FILE on a folder, with pDragItemhstrContainerName set to NULL, the Workplace Shell will initiate source rendering by sending a DM_RENDERPREPARE message, if DC_PREPARE is specified in the pDragItemfsControl word in the DRAGITEM structure. It then sends a DM_RENDER message. Again, DM_ENDCONVERSATION is sent as previously described.