What function executes in VBA when changing a calendar event - vba

Question

I have VBA code in Outlook that adds a calendar event in a google calendar when the event is added in Outlook. The code is also able to delete an event in a google calendar when the event is deleted from Outlook.
I have this code at the top of the VBA code:
Dim WithEvents curCal As Items
Dim WithEvents DeletedItems As Items
Dim newCalFolder As Outlook.Folder
The private sub that adds an event looks like this:
Private Sub curCal_ItemAdd(ByVal Item As Object)
Dim cAppt As AppointmentItem
Dim moveCal As AppointmentItem
....
Item.Save
End Sub
The code that deletes an event looks like this:
Private Sub DeletedItems_ItemAdd(ByVal Item As Object)
' only apply to appointments
If Item.MessageClass <> "IPM.Appointment" Then Exit Sub
' if using a category on copied items, this may speed it up.
If Item.Categories = "moved" Then Exit Sub
...
End Sub
Both of these functions work as expected.
Now I need to code a sub that will execute when the event is modified so I can send the modifications to google.
I assume I need to create Private Sub curCal_xxxxxxxxxxxxxxx(ByVal Item As Object) but I dont know what the xxxxxxxxxxxxxxx would be.
Anybody know what the sub name should be where I can place code that will execute after an Outlook calendar event has been changed?

Answer 1

You may consider using the ItemChange event which is fired when an item in the specified collection is changed:
Private Sub myOlItems_ItemChange(ByVal Item As Object)
Dim prompt As String
If VBA.Format(Item.Start, "h") >= "17" And Item.Sensitivity <> olPrivate Then
prompt = "Appointment occurs after hours. Mark it private?"
If MsgBox(prompt, vbYesNo + vbQuestion) = vbYes Then
Item.Sensitivity = olPrivate
Item.Display
End If
End If
End Sub
But there is no information what exactly has been changed, only the item changed is passed as a parameter.
For that reason you may consider handling the AppointmentItem.PropertyChange event which is fired when an explicit built-in property (for example, Subject) of an instance of the parent object is changed. In that case the name of the property that was changed is passed as a parameter.
Also you may find the MailItem.Write event helpful. It is fired when an object is saved, either explicitly (for example, using the Save or SaveAs methods) or implicitly (for example, in response to a prompt when closing the item's inspector).
Public WithEvents myItem As Outlook.MailItem
Private Sub myItem_Write(Cancel As Boolean)
Dim myResult As Integer
myItem = "The item is about to be saved. Do you wish to overwrite the existing item?"
myResult = MsgBox(myItem, vbYesNo, "Save")
If myResult = vbNo Then
Cancel = True
End If
End Sub
Public Sub Initialize_Handler()
Const strCancelEvent = "Application-defined or object-defined error"
On Error GoTo ErrHandler
Set myItem = Application.ActiveInspector.CurrentItem
myItem.Save
Exit Sub
ErrHandler:
MsgBox Err.Description
If Err.Description = strCancelEvent Then
MsgBox "The event was cancelled."
End If
End Sub