Application.DDETerminateAll (Word)

Closes all dynamic data exchange (DDE) channels opened by Microsoft Word.

This method does not close channels opened to Word by client applications. Using this method is the same as using the DDETerminate method for each open channel. If you interrupt a macro that opens a DDE channel, you may inadvertently leave a channel open. Open channels are not closed automatically when a macro ends, and each open channel uses system resources. For this reason, it is a good idea to use this method when you are debugging a macro that opens one or more DDE channels.

Dim lngChannel As Long 
 
lngChannel = DDEInitiate(App:="Excel", Topic:="System") 
DDEExecute Channel:=lngChannel, Command:="[OPEN(" & Chr(34) & _ 
 "C:\Documents\Book1.xls" & Chr(34) & ")]" 
DDETerminate Channel:=lngChannel 
lngChannel = DDEInitiate(App:="Excel", Topic:="Book1.xls") 
DDEPoke Channel:=lngChannel, Item:="R2C3", Data:="Hello World" 
DDEExecute Channel:=lngChannel, Command:="[Save]" 
DDETerminateAll