Sub OnClose( _
   ByVal Reason As Integer _
) 

Dim instance As IPropertyManagerPage2Handler7
Dim Reason As Integer
 
instance.OnClose(Reason)

void OnClose( 
   int Reason
)

void OnClose( 
&   int Reason
) 

Parameters

Reason

Reason this method is called as defined in swPropertyManagerPageCloseReasons_e

This handler method is called when the PropertyManager page is about to close.  

SolidWorks controls when add-ins can do work. An add-in is unable to do any real work within the PropertyManager2Handler7::OnClose handler because the PropertyManager page and command are closing. So, typically the IPropertyPage2Handler7::AfterClose handler is called after IPropertyManager2Handler7::OnClose to allow an add-in to do work. However:

NOTE: In a previous version of this method, IPropertyManagerPage2Handler3::OnClose, if the user clicked the Cancel button and the PropertyManager page had a pushpin, then this method returned swPropertyManagerPageClose_Closed. This version of this method returns swPropertyManagerPageClose_Cancel in this scenario.

Managed code can indicate that a PropertyManager page cannot be closed. Throw a COM exception with an error code of 1. For example, in C#:
 
    void OnClose (int reason)
    {
 
         // Throw a COM exception as an indication the PropertyManager
         // page cannot be closed at this time:
         // The error code must be 1, which equates to S_FALSE.
        COMException ex = new COMException("Cannot close PropertyManager page", 1);
                  
        throw ex;
 
     }