This message is used to inform a source that the target has completed its part of a rendering operation. It is sent by the target to the source.

The target must send this message under any of the following circumstances:

• The target receives a DM_RENDERCOMPLETE message and will not retry the operation.
  
• The target completes the rendering operation without involvement from the source.
  
• The target wants to terminate a rendering operation in progress.
  
• The target chooses not to render an object that was dropped on it.