macro - how to open/close application file

[Ian]

I have just begun to to learn how to write macros in VC++. For learning
purposes, I would like to implement a macro that accesses all files in a
'test' project and makes a series of changes to these files. I am able to
identify each file in my project and then open the file. But I have yet to
figure out how to close the file. Could someone kindly tell me how to close
a file? The following BASIC code illustrates my first efforts:

Sub replaceMacro()
Dim oItems As ProjectItems = DTE.ActiveSolut ionProjects(0). ProjectItems
Dim oI As ProjectItem
For Each oI In oItems
Dim oFilename As String = oI.Name()
oI.Open(vsViewK indPrimary)

' close file
' the following line fails and generates the error message
' "Object reference not set to an instance of an object
DTE.ActiveDocum ent.Close(vsSav eChanges.vsSave ChangesYes)
Next
End Sub
thanks in advance

Ian

[Ian]

Please disregard this posting as I realize it should have been put in the VB
newsgroup.

Ian

"Ian" <ib******@yahoo .com> wrote in message
news:Om******** ******@TK2MSFTN GP15.phx.gbl...

I have just begun to to learn how to write macros in VC++. For learning
purposes, I would like to implement a macro that accesses all files in a
'test' project and makes a series of changes to these files. I am able to
identify each file in my project and then open the file. But I have yet to
figure out how to close the file. Could someone kindly tell me how to
close a file? The following BASIC code illustrates my first efforts:

Sub replaceMacro()
Dim oItems As ProjectItems = DTE.ActiveSolut ionProjects(0). ProjectItems
Dim oI As ProjectItem
For Each oI In oItems
Dim oFilename As String = oI.Name()
oI.Open(vsViewK indPrimary)

' close file
' the following line fails and generates the error message
' "Object reference not set to an instance of an object
DTE.ActiveDocum ent.Close(vsSav eChanges.vsSave ChangesYes)
Next
End Sub
thanks in advance

Ian