RE: [ExcelDna] Integrating LimeLM licensing code

[Govert van Drimmelen]

One typical plan is to integrate the licensing into an add-in ribbon.

You would have a static flag or other indicator of the current licensing status, which you could check in every function if you want to disable the functions if the add-in is not licenced. Then you have an Excel-DNA ribbon extension with some UI to indicate the status and support licensing / login operations.

 

The exact dance between the external program and Excel might need a bit more thought. But suppose you have a button on the ribbon that shows a Windows Forms form – that would then work the same way you show.

 

I would suggest against automatically popping up a modal form from your add-in. That is quite hostile to someone running Excel for other reasons, of via automation.

 

-Govert

 

 

From: exce...@googlegroups.com <exce...@googlegroups.com> On Behalf Of gertja...@gmail.com
Sent: 4 July 2026 10:47
To: Excel-DNA <exce...@googlegroups.com>
Subject: [ExcelDna] Integrating LimeLM licensing code

 

Hi everyone,

I'm trying to integrate the LimeLM licensing code in my VB.NET add-in, but their sample code is for a "Windows Form" project, where the code below lives in the "main form".  I'm trying to figure out if and where this code should sit in my Excel-DNA project...  Thanks for any suggestions!

------------------------------------------------------------------

    'This event handler is called when TurboActivate.exe closes.
    Private Sub p_Exited(ByVal sender As Object, ByVal e As EventArgs)

        ' remove the event
        RemoveHandler DirectCast(sender, Process).Exited, New EventHandler(AddressOf p_Exited)

        ' the UI thread is running asynchronous to TurboActivate closing
        ' that's why we can't call TAIsActivated(); directly
        Invoke(New IsActivatedDelegate(AddressOf CheckIfActivated))
    End Sub

    Private Delegate Sub IsActivatedDelegate()

------------------------------------------------------------------

 

--
You received this message because you are subscribed to the Google Groups "Excel-DNA" group.
To unsubscribe from this group and stop receiving emails from it, send an email to exceldna+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/exceldna/f11f95cc-7029-483b-aca7-59ef125c1980n%40googlegroups.com.