WM_MOUSEMOVE message

[chkaufmann 17]

In my application I have a TApplicationEvents object and there I use the OnMessage event.

 

I was wondering why this event is called all the time even then when I don't touch the mouse and/or the keyboard. Now I noticed that WM_MOUSEMOVE are sent all the time.

 

Is this normal - probably not - but how can I find out, where these messages come from. As soon as I move the mouse cursor outside of my applications window the messages stop.

 

Christian

[Tntman 14]

Maybe try to unplug your mouse to see it you are still going to trigger it ?

Maybe your mouse is too sensitive and you cant notice that with your eyes 

 

I cant give you other suggestion but this is what came on my mind

Edited May 5, 2020 by Tntman

[Anders Melander 1795]

There are a lot of things that can cause this. Probably something you have running on your system. Might even be the debugger.

https://devblogs.microsoft.com/oldnewthing/20160616-00/?p=93685

https://devblogs.microsoft.com/oldnewthing/20031001-00/?p=42343