BeforeMaximize Event

Explorer.BeforeMaximize Event (Outlook)

Office 2013 and later

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Occurs when an explorer is maximized by the user.

expression .BeforeMaximize(Cancel)

expression A variable that represents an Explorer object.




Data Type





False when the event occurs. If the event procedure sets this argument to True, the operation is not completed and the explorer is not maximized.

This event can be cancelled after it has started.

The following Microsoft Visual Basic for Applications (VBA) example prompts the user with a warning message before maximizing the current window. If the user clicks Yes, the explorer will maximize. The sample code must be placed in a class module such as ThisOutlookSession, and the Initialize_Handler() subroutine should be called before the event procedure can be called by Microsoft Outlook.

Public WithEvents myOlExp As Outlook.Explorer 
Sub Initalize_Handler() 
 Set myOlExp = Application.ActiveExplorer 
End Sub 
Private Sub myOlExp_BeforeMaximize(Cancel As Boolean) 
'Prompts the user before maximizing the explorer 
 Dim lngAns As Long 
 lngAns = MsgBox("Are you sure you want to maximize the current window?", vbYesNo) 
 If lngAns = vbYes Then 
 Cancel = False 
 Cancel = True 
 End If 
End Sub 

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