Vba sendmessage to VB.NET app

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I have created a Excel VBA macro that change the title bar of a VB.net application I have also created (Very simple Windows form application).

The VBA uses Public Declare PtrSafe Function SendMessage Lib "user32"... The Applications works like a charm when I execute the VB.net application using the executable. But it Won't work if I run the Vb.net application via the Visual Studio debugger. Why is that it?

What I have tried:

I spy++ the handle making sure I was suing the right one!
I asked MS Copilots for some tricks.. no success
I have tried many debugger parameters with no success.

Posted 19-Apr-24 8:22am

Éric Côté 2021

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Maciej Los 19-Apr-24 14:54pm

Don't understand what the problem is...
Why do you want to control VB.Net application from VBA? You can use interface(s)...
Can you be more specific and describe your problem in details?

Dave Kreskowiak 19-Apr-24 18:09pm

Whenever you run the code under the debugger, you are still compiling to an executable and running the executable. Visual Studio does NOT execute your code directly.

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