Application.DDETerminateAll Method

  • Article
Word Developer Reference

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

Syntax

expression.DDETerminateAll

expression   A variable that represents an Application object. Optional.

Remarks

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.

Security  Dynamic data exchange (DDE) is an older technology that is not secure. If possible, use a more secure alternative to DDE, such as object linking and embedding (OLE).

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.

Example

This example opens the Microsoft Office Excel workbook Book1.xls, inserts text into cell R2C3, saves the workbook, and then terminates all DDE channels.

Visual Basic for Applications 
  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

See Also