Global.DDERequest method (Word)
Uses an open dynamic data exchange (DDE) channel to request information from the receiving application, and returns the information as a string.
expression A variable that represents a 'Global' object. Optional.
|Channel||Required||Long||The channel number returned by the DDEInitiate method.|
|Item||Required||String||The item to be requested.|
When you request information from the topic in the server application, you must specify the item in that topic whose contents you are requesting. In Microsoft Excel, for example, cells are valid items, and you refer to them by using either the "R1C1" format or named references.
Microsoft Excel and other applications that support DDE recognize a topic named "System." Three standard items in the System topic are described in the following table. Note that you can get a list of the other items in the System topic by using the SysItems item.
|Item in System topic||Effect|
|SysItems||Returns a list of all the items in the System topic.|
|Topics||Returns a list of all the available topics.|
|Formats||Returns a list of all the Clipboard formats supported by Word.|
This example opens the Microsoft Excel workbook Book1.xls and retrieves the contents of cell R1C1.
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") MsgBox DDERequest(Channel:=lngChannel, Item:="R1C1") DDETerminateAll
This example opens a channel to the System topic in Microsoft Excel and then uses the Topics item to return a list of available topics. The example inserts the topic list, which includes all open workbooks, after the selection.
Dim lngChannel As Long Dim strTopicList As String lngChannel = DDEInitiate(App:="Excel", Topic:="System") strTopicList = DDERequest(Channel:=lngChannel, Item:="Topics") Selection.InsertAfter strTopicList DDETerminate Channel:=lngChannel
Support and feedback
Have questions or feedback about Office VBA or this documentation? Please see Office VBA support and feedback for guidance about the ways you can receive support and provide feedback.