Question

Microsoft Project VBA

Asked by: TaBone

I want to prevent updates to unique columns(field) in Microsoft Project.  I created an event handler... now what?  How should it be coded?

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Asked On
2009-11-04 at 15:31:26ID24872979
Tags

Microsoft

,

Microsoft Project

,

VBA

Topic

Microsoft Project Project Management Software

Participating Experts
1
Points
500
Comments
2

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Answers

 

by: jbfraserPosted on 2009-11-05 at 07:47:32ID: 25750707


Did you create the event handler for the correct event: either ProjectBeforeTaskChange2 or ProjectBeforeTaskChange:
http://msdn.microsoft.com/en-us/library/bb237788.aspx
http://msdn.microsoft.com/en-us/library/aa204903%28office.11%29.aspx

You need to check to see if the event Field parameter is the one you are interested in blocking. If so, then set EventInfo.Cancel to true to cancel the change.

VBA Task Event handlers may be called when you don't expect (as changes cascade,) and also may not be called when you might expect (if the file is embedded in another application, or timephased data is changed.) Test thoroughly, and I wouldn't count on these as a security mechanism. From one of the above links:

The ProjectBeforeTaskChange2 event doesn't occur when timescaled data changes, when constraint data in the Task Details Form changes, when a task is split by manipulating its task bar on the Gantt Chart, when changes are made to outline level or outline number, when a baseline is saved, when a baseline is cleared, when an entire task row is pasted, during resource pool operations, when inserting or removing a subproject, or when changes have been made using a custom form.

Also, I highly recommend Rod Gill's book if you are usiing VBA in Project. VBA Programming for Microsoft Office Project. It should be available through amazon or msprojectexperts.com.

James Fraser

 

by: TaBonePosted on 2009-11-15 at 10:03:12ID: 25825686

James, this was very helpful.  The event handler now works perfectly, but I'm not sure how to deploy it to my Global.MPT.

I developed an event handler which works very well locally.  Im trying to add the code to my Global.MPT.  When I copy and paste the code into a new Class Module in my Global.MPT, I close out of MS Project.  I then launch MS Project and the Event Does NOT fire.  My macro security is set to Low.  Im not sure what else I have to do&

Do I have to tie the Class Module to a Module?  If so, how?

TIA

Heres what the code looks lik (obfuscated for obvious reasons - all underscores are obfuscations):


Public WithEvents ProjApp As Application

Private Sub ProjApp_ProjectBeforeTaskChange(ByVal tsk As Task, ByVal Field As PjField, ByVal NewVal As Variant, Cancel As Boolean)

Dim ____
Dim ____
__________________
 
Select Case _____

Case ____"
   intResult = MsgBox( "____")
   If intResult = ____ Then
    Cancel = True
   End If
End Select
 
End Sub

Private Sub ProjApp_ProjectBeforeTaskDelete(ByVal tsk As Task, Cancel As Boolean)

Dim intResult As ______

If _____________=__ Then
 
   intResult = MsgBox("_____________ ")
   If intResult = ____ Then
    Cancel = True
   End If
End If

End Sub

20120131-EE-VQP-002

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