AutoCAD Inventor :: Prevent User To Start Other Command While Executing A Macro

I have a macro that automatically creates a Detailed view on a sheet. It works on 2 input's:

- mouse click 1 (set's the target to be detailed)

- mouse click 2 (set's the location where the balloon should be)

The code works fine. But sometimes the user will start another command, or restart the same command, while it is still running. This off course gives all kinds of problems.

Is there a possibility in VBA to prevent the user to start another command while this command is running?Or is this problem a part of the clicking itself?

Here is my (it uses a Class Module called: clsGetPoint, see code below)
Sub AutoDetailedView() On Error GoTo ErrorManagment '(error handling 2013/02/18) 'step 0 Create a transaction. -> for 1 undo command Dim oTransMgr As TransactionManager Set oTransMgr = ThisApplication.TransactionManager Dim oTrans As Transaction Set oTrans = oTransMgr.StartTransaction(ThisApplication.ActiveDocument, "AutoDetailedView") 'step 1 Select a drawingView 'Set a reference to the drawing document. Dim oDrawDoc As DrawingDocument Set oDrawDoc = ThisApplication.ActiveDocument 'Set a reference to the active sheet.
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